TI MSC1210 Precision analog-to-digital converter (adc) with 8051 microcontroller and flash memory Datasheet

MSC1210
SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
Precision Analog-to-Digital Converter (ADC)
with 8051 Microcontroller and Flash Memory
FEATURES
ANALOG FEATURES
D 24 Bits No Missing Codes
D 22 Bits Effective Resolution at 10Hz
D
D
D
D
D
D
D
D
D
D
− Low Noise: 75nV
PGA From 1 to 128
Precision On-Chip Voltage Reference
− Accuracy: 0.2%
− Drift: 5ppm/°C
8 Differential/Single-Ended Channels
On-Chip Offset/Gain Calibration
Offset Drift: 0.02ppm/°C
Gain Drift: 0.5ppm/°C
On-Chip Temperature Sensor
Burnout Sensor Detection
Single-Cycle Conversion
Selectable Buffer Input
DIGITAL FEATURES
Microcontroller Core
D 8051-Compatible
D High-Speed Core
− 4 Clocks per Instruction Cycle
D DC to 33MHz
D Single Instruction 121ns
D Dual Data Pointer
Memory
D Up To 32kB Flash Memory
D Flash Memory Partitioning
D Endurance 1M Erase/Write Cycles,
100 Year Data Retention
D In-System Serially Programmable
D External Program/Data Memory (64kB)
D 1,280 Bytes Data SRAM
D Flash Memory Security
D 2kB Boot ROM
D Programmable Wait State Control
Peripheral Features
D 34 I/O Pins
D Additional 32-Bit Accumulator
D Three 16-Bit Timer/Counters
D System Timers
D Programmable Watchdog Timer
D Full-Duplex Dual USARTs
D Master/Slave SPI
D 16-Bit PWM
D Power Management Control
D Idle Mode Current < 1mA
D Stop Mode Current < 1mA
D Programmable Brownout Reset
D Programmable Low Voltage Detect
D 21 Interrupt Sources
D Two Hardware Breakpoints
GENERAL FEATURES
D
D
D
D
D
Pin-Compatible with MSC1211/12/13/14
Package: TQFP-64
Low Power: 4mW
Industrial Temperature Range:
−40°C to +85°C
Power Supply: 2.7V to 5.25V
APPLICATIONS
D
D
D
D
D
D
D
D
D
D
D
Industrial Process Control
Instrumentation
Liquid/Gas Chromatography
Blood Analysis
Smart Transmitters
Portable Instruments
Weigh Scales
Pressure Transducers
Intelligent Sensors
Portable Applications
DAS Systems
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
Copyright  2002−2004, Texas Instruments Incorporated
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
PACKAGE/ORDERING INFORMATION(1)
PRODUCT
FLASH MEMORY
PACKAGE-LEAD
PACKAGE
DESIGNATOR
SPECIFIED
TEMPERATURE RANGE
PACKAGE
MARKING
MSC1210Y2
4k
TQFP-64
PAG
−40°C to +85°C
MSC1210Y2
MSC1210Y3
8k
TQFP-64
PAG
−40°C to +85°C
MSC1210Y3
MSC1210Y4
16k
TQFP-64
PAG
−40°C to +85°C
MSC1210Y4
MSC1210Y5
32k
TQFP-64
PAG
−40°C to +85°C
MSC1210Y5
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this datasheet, or refer to our web site at www.ti.com.
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled
with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
ABSOLUTE MAXIMUM RATINGS(1)
MSC1210Yx
UNITS
Momentary
100
mA
Continuous
10
mA
AGND − 0.3 to AVDD + 0.3
V
DVDD to DGND
AVDD to AGND
−0.3 to +6
V
−0.3 to +6
V
AGND to DGND
−0.3 to +0.3
V
VREF to AGND
−0.3 to AVDD + 0.3
V
Digital input voltage to DGND
−0.3 to DVDD + 0.3
V
Digital output voltage to DGND
−0.3 to DVDD + 0.3
V
Maximum junction temperature
150
°C
Operating temperature range
−40 to +85
°C
Storage temperature range
−65 to +150
°C
+235
°C
Analog Inputs
Input current
Input voltage
Power Supply
Lead temperature (soldering, 10s)
Package power dissipation
(TJ Max − TAMBIENT)/qJA
W
200
mA
Output current, all pins
Output pin short-circuit
Thermal Resistance
Junction to ambient (qJA)
10
s
High K (2s 2p)
62.9
°C/W
Low K (1s)
78.2
°C/W
Junction to case (qJC)
13.8
°C/W
Continuous
Digital Outputs
Output current
100
mA
I/O source/sink current
100
mA
Power pin maximum
300
mA
(1) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to absolute maximum conditions for
extended periods may affect device reliability.
MSC1210YX FAMILY FEATURES
FEATURES(1)
MSC1210Y2(2)
MSC1210Y3(2)
MSC1210Y4(2)
MSC1210Y5(2)
Flash Program Memory (Bytes)
Up to 4k
Up to 8k
Up to 16k
Up to 32k
Flash Data Memory (Bytes)
Up to 4k
Up to 8k
Up to 16k
Up to 32k
Internal Scratchpad RAM (Bytes)
256
256
256
256
Internal MOVX RAM (Bytes)
1024
1024
1024
1024
64k Program, 64k Data
64k Program, 64k Data
64k Program, 64k Data
64k Program, 64k Data
Externally Accessible Memory (Bytes)
(1) All peripheral features are the same on all devices; the flash memory size is the only difference.
(2) The last digit of the part number (N) represents the onboard flash size = (2N)kBytes.
2
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
ELECTRICAL CHARACTERISTICS: AVDD = 5V
All specifications from TMIN to TMAX, DVDD = +2.7V to 5.25V, fMOD = 15.625kHz, PGA = 1, Buffer ON, fDATA = 10Hz, Bipolar, and VREF = (REF IN+) − (REF IN−) =
+2.5V, unless otherwise noted.
MSC1210Yx
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
AVDD + 0.1
V
AVDD − 1.5
V
Analog Input (AIN0-AIN7, AINCOM)
Analog Input Range
Buffer OFF
AGND − 0.1
Buffer ON
AGND + 50mV
Full-Scale Input Voltage Range
(In+) − (In−)
Differential Input Impedance
Buffer OFF
Input Current
Buffer ON
Bandwidth
±VREF/PGA
V
7/PGA(5)
MΩ
0.5
nA
Fast Settling Filter
−3dB
0.469 • fDATA
Sinc2 Filter
−3dB
0.318 • fDATA
Sinc3 Filter
−3dB
0.262 • fDATA
Programmable Gain Amplifier
User-Selectable Gain Range
1
128
Input Capacitance
Buffer On
9
pF
Input Leakage Current
Modulator OFF, T = +25°C
0.5
pA
Burnout Current Sources
Buffer On
±2
µA
±VREF/(2•PGA)
V
±1.5
% of Range
1
ppm/°C
Offset DAC
Offset DAC Range
Offset DAC Monotonicity
8
Offset DAC Gain Error
Offset DAC Gain Error Drift
Bits
System Performance
Resolution
ENOB
24
See Typical Characteristics
Bits
22
Output Noise
Bits
See Typical Characteristics
No Missing Codes
Sinc3 Filter, Decimation > 360
Integral Nonlinearity
End Point Fit, Differential Input
Offset Error
After Calibration
Offset Drift(1)
Gain Error(2)
Gain Error Drift(1)
Before Calibration
24
Bits
±0.0015
% of FSR
7.5
ppm of FS
Before Calibration
0.02
ppm of FS/°C
After Calibration
0.002
%
0.5
ppm/°C
System Gain Calibration Range
80
120
% of FS
System Offset Calibration Range
−50
50
% of FS
At DC
ADC Common-Mode Rejection
Normal-Mode Rejection
Power-Supply Rejection
115
dB
fCM = 60Hz, fDATA = 10Hz
130
dB
fCM = 50Hz, fDATA = 50Hz
120
dB
fCM = 60Hz, fDATA = 60Hz
120
dB
fSIG = 50Hz, fDATA = 50Hz
100
dB
fSIG = 60Hz, fDATA = 60Hz
100
dB
88
dB
At DC, dB = −20log(∆VOUT/∆VDD)(3)
100
80
(1)
Calibration can minimize these errors.
The gain calibration cannot have a REF IN+ of more than AVDD −1.5V with Buffer ON. To calibrate gain, turn Buffer OFF.
∆VOUT is change in digital result.
(4) 9pF switched capacitor at f
SAMP clock frequency (see Figure 13).
(5) The input impedance for PGA = 128 is the same as that for PGA = 64 (that is, 7MΩ/64).
(2)
(3)
3
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
ELECTRICAL CHARACTERISTICS: AVDD = 5V (continued)
All specifications from TMIN to TMAX, DVDD = +2.7V to 5.25V, fMOD = 15.625kHz, PGA = 1, Buffer ON, fDATA = 10Hz, Bipolar, and VREF = (REF IN+) − (REF IN−) =
+2.5V, unless otherwise noted.
MSC1210Yx
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
AVDD(2)
V
Voltage Reference Input
Reference Input Range
REF IN+, REF IN−
VREF
VREF = (REF IN+) − (REF IN−)
VREF Common-Mode Rejection
Input Current(4)
AGND
0.1
2.5
AVDD
V
At DC
130
dB
fCM = 60Hz, fDATA = 60Hz
120
dB
3
µA
VREF = 2.5V
On-Chip Voltage Reference
VREFH = 1 at +25°C, ACLK = 1MHz
Output Voltage
2.495
VREFH = 0 at +25°C, ACLK = 1MHz
2.5
2.505
V
1.25
V
65
dB
Short-Circuit Current Source
8
mA
Short-Circuit Current Sink
50
µA
Power-Supply Rejection Ratio
Short-Circuit Duration
Sink or Source
Indefinite
Drift
Output Impedance
Sourcing 100µA
Startup Time from Power On
CREF = 0.1µF
Temperature Sensor Voltage
T = +25°C
Temperature Sensor Coefficient
5
ppm/°C
3
Ω
8
ms
115
mV
375
µV/°C
Analog Power-Supply Requirements
Analog Power-Supply Voltage
Analog Current
(IADC + IVREF)
Analog
Power-Supply
Current
ADC Current
(IADC)
VREF Supply Current
(IVREF)
(1)
AVDD
4.75
5.0
4
V
PDADC = 1, ALVDIS = 1, DAB = 1
<1
nA
PGA = 1, Buffer OFF
200
µA
PGA = 128, Buffer OFF
500
µA
PGA = 1, Buffer ON
240
µA
PGA = 128, Buffer ON
850
µA
ADC ON, VDAC OFF
250
µA
Calibration can minimize these errors.
The gain calibration cannot have a REF IN+ of more than AVDD −1.5V with Buffer ON. To calibrate gain, turn Buffer OFF.
(3) ∆V
OUT is change in digital result.
(4) 9pF switched capacitor at f
SAMP clock frequency (see Figure 13).
(5) The input impedance for PGA = 128 is the same as that for PGA = 64 (that is, 7MΩ/64).
(2)
5.25
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
ELECTRICAL CHARACTERISTICS: AVDD = 3V
All specifications from TMIN to TMAX, DVDD = +2.7V to 5.25V, fMOD = 15.625kHz, PGA = 1, Buffer ON, fDATA = 10Hz, Bipolar, and VREF = (REF IN+) − (REF IN−) =
+1.25V, unless otherwise noted.
MSC1210Yx
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ANALOG INPUT (AIN0-AIN7, AINCOM)
Analog Input Range
Buffer OFF
AGND − 0.1
AVDD + 0.1
V
Buffer ON
AGND + 50mV
AVDD − 1.5
V
Full-Scale Input Voltage Range
(In+) − (In−)
Differential Input Impedance
Buffer OFF
Input Current
Buffer ON
Bandwidth
±VREF/PGA
MΩ
0.5
nA
Fast Settling Filter
−3dB
0.469 • fDATA
Sinc2 Filter
−3dB
0.318 • fDATA
Sinc3 Filter
−3dB
Programmable Gain Amplifier
V
7/PGA(5)
0.262 • fDATA
User-Selectable Gain Range
1
Input Capacitance
128
9
pF
Input Leakage Current
Modulator OFF, T = +25°C
0.5
pA
Burnout Current Sources
Sensor Input Open Circuit
±2
µA
±VREF/(2•PGA)
V
±1.5
% of Range
1
ppm/°C
OFFSET DAC
Offset DAC Range
Offset DAC Monotonicity
8
Offset DAC Gain Error
Offset DAC Gain Error Drift
Bits
SYSTEM PERFORMANCE
Resolution
24
ENOB
Bits
22
Output Noise
Bits
See Typical Characteristics
No Missing Codes
Sinc3 Filter
Integral Nonlinearity
End Point Fit, Differential Input
Offset Error
After Calibration
7.5
ppm of FS
Offset Drift(1)
Before Calibration
0.02
ppm of FS/°C
Gain Error(2)
After Calibration
0.005
%
Gain Error Drift(1)
Before Calibration
1.0
ppm/°C
24
Bits
±0.0015
% of FSR
System Gain Calibration Range
80
120
% of FS
System Offset Calibration Range
−50
50
% of FS
At DC
ADC Common-Mode Rejection
Normal-Mode Rejection
Power-Supply Rejection
(1)
(2)
(3)
(4)
(5)
100
115
dB
fCM = 60Hz, fDATA = 10Hz
130
dB
fCM = 50Hz, fDATA = 50Hz
120
dB
fCM = 60Hz, fDATA = 60Hz
120
dB
fSIG = 50Hz, fDATA = 50Hz
100
dB
fSIG = 60Hz, fDATA = 60Hz
100
dB
85
dB
)(3)
At DC, dB = −20log(∆VOUT/∆VDD
Calibration can minimize these errors.
The gain calibration cannot have a REF IN+ of more than AVDD −1.5V with Buffer ON. To calibrate gain, turn Buffer OFF.
∆VOUT is change in digital result.
9pF switched capacitor at fSAMP clock frequency (see Figure 13).
The input impedance for PGA = 128 is the same as that for PGA = 64 (that is, 7MΩ/64).
5
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
ELECTRICAL CHARACTERISTICS: AVDD = 3V (continued)
All specifications from TMIN to TMAX, DVDD = +2.7V to 5.25V, fMOD = 15.625kHz, PGA = 1, Buffer ON, fDATA = 10Hz, Bipolar, and VREF = (REF IN+) − (REF IN−) =
+1.25V, unless otherwise noted.
MSC1210Yx
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
AVDD(2)
V
AVDD
V
VOLTAGE REFERENCE INPUT
Reference Input Range
REF IN+, REF IN−
VREF
VREF = (REF IN+) − (REF IN−)
VREF Common-Mode Rejection
Input Current(4)
AGND
0.1
1.25
At DC
130
dB
fCM = 60Hz, fDATA = 60Hz
120
dB
VREF = 1.25V
1.5
µA
ON-CHIP VOLTAGE REFERENCE
Output Voltage
VREFH = 0 at +25°C, ACLK = 1MHz
1.245
1.25
1.255
V
Power-Supply Rejection Ratio
65
dB
Short-Circuit Current Source
8
mA
50
µA
Short-Circuit Current Sink
Short-Circuit Duration
Sink or Source
Indefinite
Drift
5
ppm/°C
Output Impedance
Sourcing 100µA
3
Ω
Startup Time from Power OFF
CREF = 0.1µF
8
ms
Temperature Sensor Voltage
T = +25°C
Temperature Sensor Coefficient
115
mV
375
µV/°C
ANALOG POWER-SUPPLY REQUIREMENTS
Analog Power-Supply Voltage
Analog Current
(IADC + IVREF)
Analog
Power-Supply
Current
ADC Current
(IADC)
VREF Supply Current
(IVREF)
(1)
AVDD
2.7
3.6
PDADC = 1, ALVDIS = 1, DAB = 1
<1
nA
PGA = 1, Buffer OFF
200
µA
PGA = 128, Buffer OFF
500
µA
PGA = 1, Buffer ON
240
µA
PGA = 128, Buffer ON
850
µA
240
µA
Calibration can minimize these errors.
The gain calibration cannot have a REF IN+ of more than AVDD −1.5V with Buffer ON. To calibrate gain, turn Buffer OFF.
∆VOUT is change in digital result.
(4) 9pF switched capacitor at f
SAMP clock frequency (see Figure 13).
(5) The input impedance for PGA = 128 is the same as that for PGA = 64 (that is, 7MΩ/64).
(2)
(3)
6
V
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
DIGITAL CHARACTERISTICS: DVDD = 2.7V to 5.25V
All specifications from TMIN to TMAX, fOSC = 1MHz, unless otherwise specified.
MSC1210Yx
PARAMETER
CONDITIONS
MIN
TYP
MAX
2.7
UNITS
DIGITAL POWER-SUPPLY REQUIREMENTS
Digital Power-Supply Voltage
DVDD
3.0
3.6
V
Normal Mode, fOSC = 1MHz
1.4
1.6
mA
Normal Mode, fOSC = 8MHz
8
9
mA
Crystal Operation Stop Mode(1)
Digital Power-Supply Current
DVDD
µA
1
4.75
5.0
5.25
V
Normal Mode, fOSC = 1MHz
2
2.2
mA
Normal Mode, fOSC = 8MHz
17
18
mA
Crystal Operation Stop Mode(1)
1
µA
DIGITAL INPUT/OUTPUT (CMOS)
Logic Level
VIH (except XIN pin)
0.6 • DVDD
DVDD
V
VIL (except XIN pin)
DGND
0.2 • DVDD
V
I/O Pin Hysteresis
Ports 0−3, Input Leakage Current, Input Mode
VIH = DVDD or VIH = 0V
Pins EA, XIN Input Leakage Current
VOL, ALE, PSEN, Ports 0−3, All Output Modes
VOH, ALE, PSEN, Ports 0−3, Strong Drive Output
IOL = 1mA
pA
<1
pA
IOH = 1mA
0.4
1.5
DVDD − 0.4
IOH = 30mA
Flash Programming Mode Only
Pin RST, Pull-Down Resistor
(1)
mV
<1
DGND
IOL = 30mA
Ports 0−3, Pull-Up Resistors
Pins ALE, PSEN, Pull-Up Resistors
700
DVDD − 0.1
V
V
DVDD
V
DVDD − 1.5
V
9
kΩ
9
kΩ
500
kΩ
Digital Brownout Detect disabled (HCR1.2 = 1), Low Voltage Detect disabled (LVDCON.3 =1). Ports configured for input or CMOS output.
FLASH MEMORY CHARACTERISTICS: DVDD = 2.7V to 5.25V
MSC1210Yx
PARAMETER
CONDITIONS
Flash Memory Endurance
Flash Memory Data Retention
MIN
TYP
100,000
1,000,000
UNITS
cycles
100
years
ms
Mass and Page Erase Time
Set with FER in FTCON
10
Flash Memory Write Time
Set with FWR in FTCON
30
Flash Programming Current
MAX
40
µs
DVDD = 3.0V
10
mA
DVDD = 5.0V
25
mA
7
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
AC ELECTRICAL CHARACTERISTICS(1)(2): DVDD = 2.7V to 5.25V
2.7V to 3.6V
SYMBOL
4.75V to 5.25V
PARAMETER
MIN
MAX
MIN
MAX
UNITS
External Crystal Frequency (fOSC)
External Clock Frequency (fOSC)
External Ceramic Resonator Frequency (fOSC)
1
0
1
18
18
16
1
0
1
33
33
16
MHz
MHz
MHz
1.5tCLK − 5
0.5tCLK − 10
0.5tCLK
FIGURE
System Clock
1/tCLK(4)
4
Program Memory
tLHLL
tAVLL
1
ALE Pulse Width
1
Address Valid to ALE LOW
tLLAX
tLLIV
1
Address Hold After ALE LOW
1
ALE LOW to Valid Instruction In
tLLPL
tPLPH
1
ALE LOW to PSEN LOW
1
PSEN Pulse Width
tPLIV
tPXIX
1
PSEN LOW to Valid Instruction in
1
Input Instruction Hold After PSEN
tPXIZ
tAVIV
1
Input Instruction Float After PSEN
1
tPLAZ
Data Memory
1.5tCLK − 5
0.5tCLK − 7
ns
ns
0.5tCLK
2.5tCLK − 35
0.5tCLK
2tCLK − 5
ns
2.5tCLK − 25
0.5tCLK
2tCLK − 5
2tCLK − 40
5
ns
ns
ns
2tCLK − 30
−5
ns
ns
tCLK
3tCLK − 25
ns
Address to Valid Instruction In
tCLK − 5
3tCLK − 40
1
PSEN LOW to Address Float
0
0
ns
tRLRH
2
RD Pulse Width (tMCS = 0)(5)
RD Pulse Width (tMCS > 0)(5)
2tCLK − 5
tMCS − 5
2tCLK − 5
tMCS − 5
ns
ns
tWLWH
3
WR Pulse Width (tMCS = 0)(5)
WR Pulse Width (tMCS > 0)(5)
2tCLK − 5
tMCS − 5
2tCLK − 5
tMCS − 5
ns
ns
tRLDV
2
RD LOW to Valid Data In (tMCS = 0)(5)
RD LOW to Valid Data In (tMCS > 0)(5)
tRHDX
2
Data Hold After Read
tRHDZ
2
Data Float After Read (tMCS = 0)(5)
Data Float After Read (tMCS > 0)(5)
tCLK
2tCLK
tCLK
2tCLK
ns
ns
tLLDV
2
ALE LOW to Valid Data In (tMCS = 0)(5)
ALE LOW to Valid Data In (tMCS > 0)(5)
2
Address to Valid Data In (tMCS = 0)(5)
Address to Valid Data In (tMCS > 0)(5)
2.5tCLK − 25
tCLK + tMCS − 25
3tCLK − 25
ns
ns
tAVDV
2.5tCLK − 40
tCLK + tMCS − 40
3tCLK − 40
1.5tCLK + tMCS − 40
1.5tCLK + tMCS − 25
ns
ns
tLLWL
2, 3
ALE LOW to RD or WR LOW (tMCS = 0)(5)
ALE LOW to RD or WR LOW (tMCS > 0)(5)
0.5tCLK − 5
tCLK − 5
0.5tCLK + 5
tCLK + 5
ns
ns
tAVWL
2, 3
Address to RD or WR LOW (tMCS = 0)(5)
Address to RD or WR LOW (tMCS > 0)(5)
tQVWX
tWHQX
3
Data Valid to WR Transition
tCLK − 5
2tCLK − 5
−8
tCLK − 5
2tCLK − 5
−5
3
Data Hold After WR
tCLK − 8
tCLK − 5
tRLAZ
2
RD LOW to Address Float
2, 3
RD or WR HIGH to ALE HIGH (tMCS = 0)(5)
RD or WR HIGH to ALE HIGH (tMCS > 0)(5)
−5
tCLK − 5
tHIGH
tLOW
4
HIGH Time(3)
15
10
4
LOW Time(3)
15
10
tR
tF
4
Rise Time(3)
5
5
ns
4
Fall Time(3)
5
5
ns
tWHLH
2tCLK − 40
tMCS − 40
−5
2tCLK − 30
tMCS − 30
−5
0.5tCLK + 5
tCLK + 5
−0.5tCLK − 5
5
tCLK + 5
0.5tCLK − 5
tCLK − 5
−5
tCLK − 5
ns
ns
ns
ns
ns
ns
ns
ns
−0.5tCLK − 5
5
tCLK + 5
ns
ns
ns
External Clock
(1)
(2)
(3)
(4)
(5)
8
Parameters are valid over operating temperature range, unless otherwise specified.
Load capacitance for Port 0, ALE, and PSEN = 100pF; load capacitance for all other outputs = 80pF.
These values are characterized but not 100% production tested.
tCLK = 1/fosc = one oscillator clock period.
tMCS is a time period related to the Stretch MOVX selection. The following table shows the value of tMCS for each stretch selection:
MD2
MD1
MD0
MOVX DURATION
0
0
0
2 Machine Cycles
tMCS
0
0
0
1
3 Machine Cycles (default)
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
4 Machine Cycles
5 Machine Cycles
6 Machine Cycles
7 Machine Cycles
8 Machine Cycles
9 Machine Cycles
4tCLK
8tCLK
12tCLK
16tCLK
20tCLK
24tCLK
28tCLK
ns
ns
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
EXPLANATION OF THE AC SYMBOLS
Each Timing Symbol has five characters. The first character is always ‘t’ (= time). The other characters, depending on their positions, indicate the name of a signal
or the logical status of that signal. The designators are:
RRD Signal
AAddress
CClock
tTime
DInput Data
VValid
HLogic Level HIGH
WWR Signal
IInstruction (program memory contents)
XNo Longer a Valid Logic Level
LLogic Level LOW, or ALE
ZFloat
PPSEN
Examples:
(1) tAVLL = Time for address valid to ALE LOW.
QOutput Data
(2) tLLPL = Time for ALE LOW to PSEN LOW.
tLHLL
ALE
tAVLL
t PLPH
tLLPL
tLLIV
tPLIV
PSEN
tPXIZ
t LLAX
tPLAZ
A0−A7
PORT 0
tPXIX
INSTR IN
A0−A7
tAVIV
A8−A15
PORT 2
A8−A15
Figure 1. External Program Memory Read Cycle
ALE
tWHLH
PSEN
tLLDV
tLLWL
tRLRH
RD
tAVLL
t LLAX
tRLAZ
PORT 0
tRHDZ
tRLDV
A0−A7
from RI or DPL
t RHDX
DATA IN
A0−A7from PCL
INSTR IN
t AVWL
tAVDV
PORT 2
P2.0−P2.7 or A8−A15 from DPH
A8−A15 from PCH
Figure 2. External Data Memory Read Cycle
9
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
ALE
tWHLH
PSEN
tLLWL
tWLWH
WR
tAVLL
tLLAX
tQ V W X
tWHQX
t DW
PORT 0
A0−A7
from RI or DPL
DATA OUT
A0−A7 from PCL
tAVWL
PORT 2
P2.0−P2.7or A8−A15 from DPH
A 8−A15 from PCH
Figure 3. External Data Memory Write Cycle
t HIGH
VIH1
0.8V
tf
tr
VIH1
0.8V
VIH1
tLOW
VIH1
0.8V
t CLK
Figure 4. External Clock Drive CLK
10
0.8V
INSTR IN
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
RESET AND POWER-ON TIMING
tRW
RST
tRRD
tRFD
tRRD
tRFD
PSEN
ALE
t RS
tRH
EA
NOTE: PSEN and ALE are internally pulled up with ~9kΩ during RST high.
Figure 5. Reset Timing
tRW
RST
tRFD
tRRD
PSEN
tRS
tRRD
tRH
ALE
NOTE: PSEN and ALE are internally pulled up with ~9kΩ during RST high.
Figure 6. Parallel Flash Programming Power-On Timing (EA is ignored)
tRW
RST
tRRD
tRS
tRH
PSEN
t RFD
t RRD
ALE
NOTE: PSEN and ALE are internally pulled up with ~9kΩ during RST high.
Figure 7. Serial Flash Programming Power-On Timing (EA is ignored)
SYMBOL
PARAMETER
tRW
tRRD
RST width
tRFD
tRS
RST falling to PSEN and ALE start
tRH
RST falling to input signal hold time
RST rise to PSEN ALE internal pull HIGH
Input signal to RST falling setup time
MIN
MAX
2tOSC
—
—
UNIT
ns
5
µs
—
(217 + 512)tOSC
ns
tOSC
(217 + 512)tOSC
—
ns
—
ns
11
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
PIN ASSIGNMENTS
P0.3/AD3
P0.4/AD4
P0.5/AD5
58
P0.2/AD2
59
P0.1/AD1
P1.2/RxD1
60
P0.0/AD0
P1.3/TxD1
61
P1.0/T2
P1.4/INT2/SS
62
P1.1/T2EX
P1.5/INT3/MOSI
63
DGND
P1.6/INT4/MISO
64
DVDD
P1.7/INT5/SCK
PAG PACKAGE
(TOP VIEW)
57
56
55
54
53
52
51
50
49
XOUT
1
48 EA
XIN
2
47 P0.6/AD6
P3.0/RxD0
3
46 P0.7/AD7
P3.1/TxD0
4
45 ALE
P3.2/INT0
5
44 PSEN/OSCCLK/MODCLK
P3.3/INT1/TONE/PWM
6
43 P2.7/A15
P3.4/T0
7
42 DVD D
P3.5/T1
8
P3.6/WR
41 DGND
MSC1210
9
40 P2.6/A14
P3.7/RD 10
39 P2.5/A13
DVD D 11
38 P2.4/A12
DGND 12
37 P2.3/A11
RST 13
36 P2.2/A10
14
35 P2.1/A09
DVD D 15
34 P2.0/A08
DVD D
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6/EXTD
AIN7/EXTA
AINCOM
AGND
AVD D
REF IN+
REF OUT
NC
REF IN
17
−
12
33 NC
AGND
NC 16
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
PIN DESCRIPTIONS
PIN #
NAME
1
XOUT
2
XIN
3−10
P3.0–P3.7
DESCRIPTION
The crystal oscillator pin XOUT supports parallel resonant AT cut fundamental frequency crystals and ceramic
resonators. XOUT serves as the output of the crystal amplifier.
The crystal oscillator pin XIN supports parallel resonant AT cut fundamental frequency crystals and ceramic
resonators. XIN can also be an input if there is an external clock source instead of a crystal.
Port 3 is a bidirectional I/O port. The alternate functions for Port 3 are listed below.
PORT 3.x
Alternate Name(s)
Alternate Use
P3.0
RxD0
Serial port 0 input
P3.1
TxD0
Serial port 0 output
P3.2
INT0
External interrupt 0
P3.3
INT1/TONE/PWM
External interrupt 1/TONE/PWM output
P3.4
T0
Timer 0 external input
P3.5
T1
Timer 1 external input
P3.6
WR
External data memory write strobe
P3.7
RD
External data memory read strobe
11, 14, 15, 42, 58
DVDD
Digital power supply
12, 41, 57
DGND
Digital ground
13
RST
A HIGH on the reset input for two tOSC periods resets the device.
16, 32, 33
NC
No connection
17, 27
AGND
Analog ground
18
AIN0
Analog input channel 0
19
AIN1
Analog input channel 1
20
AIN2
Analog input channel 2
21
AIN3
Analog input channel 3
22
AIN4
Analog input channel 4
23
AIN5
Analog input channel 5
24
AIN6, EXTD
Analog input channel 6, digital low-voltage detect input, generates DLVD interrupt
25
AIN7, EXTA
Analog input channel 7, analog low-voltage detect input, generates ALVD interrupt
26
AINCOM
28
AVDD
Analog common for single-ended inputs or analog input for differential inputs
Analog power supply. AVDD must rise above 2.0V to disable Analog Brownout Reset function.
29
REF IN–
Voltage reference negative input (must be tied to AGND for internal VREF)
30
REF IN+
Voltage reference positive input
31
REF OUT
Voltage reference output (tie to REF IN+ for internal VREF use)
34−40, 43
P2.0−P2.7
Port 2 is a bidirectional I/O port. The alternate functions for Port 2 are listed below. Refer to P2DDR, SFR B1h−B2h.
PORT 2.x
Alternate Name
Alternate Use
P2.0
A8
Address bit 8
P2.1
A9
Address bit 9
P2.2
A10
Address bit 10
P2.3
A11
Address bit 11
P2.4
A12
Address bit 12
P2.5
A13
Address bit 13
P2.6
A14
Address bit 14
P2.7
A15
Address bit 15
13
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
PIN DESCRIPTIONS (continued)
PIN #
NAME
DESCRIPTION
44
PSEN,
OSCCLK,
MODCLK
Program store enable. Connected to optional external memory as a chip enable. PSEN provides an active low pulse.
In programming mode, PSEN is used as an input along with ALE to define serial or parallel programming mode.
PSEN is held HIGH for parallel programming mode and LOW for serial programming. This pin can also be selected
(when not using external memory) to output the oscillator clock, modulator clock, HIGH, or LOW. Care should be
taken so that loading on this pin does not inadvertently cause the device to enter programming mode.
PSEN
Program Mode Selection
NC
NC
Normal operation (User Application mode)
0
NC
Parallel programming
NC
0
Serial programming
0
0
Reserved
45
ALE
Address Latch Enable: Used for latching the low byte of the address during an access to external memory. ALE is emitted
at a constant rate of 1/4 the oscillator frequency, and can be used for external timing or clocking. One ALE pulse is
skipped during each access to external data memory. In programming mode, ALE is used as an input along with PSEN to
define serial or parallel programming mode. ALE is held HIGH for parallel programming mode and LOW for parallel
programming. This pin can also be selected (when not using external memory) to output HIGH or LOW. Care should be
taken so that loading on this pin does not inadvertently cause the device to enter programming mode.
48
EA
External Access Enable: EA must be externally held LOW at the end of RESET to enable the device to fetch code
from external program memory locations starting with 0000h. No internal pull-up on this pin.
46, 47, 49−54
P0.0−P0.7
55, 56, 59−64
14
ALE
P1.0−P1.7
Port 0 is a bidirectional I/O port. The alternate functions for Port 0 are listed below. Refer to P1DDR, SFR AEh−AFh.
PORT 0.x
Alternate Name
Alternate Use
P0.0
AD0
Address/Data bit 0
P0.1
AD1
Address/Data bit 1
P0.2
AD2
Address/Data bit 2
P0.3
AD3
Address/Data bit 3
P0.4
AD4
Address/Data bit 4
P0.5
AD5
Address/Data bit 5
P0.6
AD6
Address/Data bit 6
P0.7
AD7
Address/Data bit 7
Port 0 is a bidirectional I/O port. The alternate functions for Port 0 are listed below. Refer to P1DDR, SFR AEh−AFh.
PORT 0.x
Alternate Name(s)
Alternate Use
P1.0
T2
T2 input
P1.1
T2EX
T2 external input
P1.2
RxD1
Serial port input
P1.3
TxD1
Serial port output
P1.4
INT2/SS
External Interrupt / Slave Select
P1.5
INT3/MOSI
External Interrupt / Master Out−Slave In
P1.6
INT4/MISO
External Interrupt / Master In−Slave Out
P1.7
INT5/SCK
External Interrupt / Serial Clock
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
TYPICAL CHARACTERISTICS
AVDD = +5V, DVDD = +5V, fOSC = 8MHz, PGA = 1, fDATA = 10Hz, Buffer ON, and VREF = (REF IN+) − (REF IN−) = +2.5V, unless otherwise specified.
EFFECTIVE NUMBER OF BITS
vs DECIMATION RATIO
22
PGA2
PGA1
PGA1
PGA8
21
PGA32
PGA64
20
PGA128
19
ENOB (rms)
ENOB (rms)
EFFECTIVE NUMBER OF BITS vs DATA RATE
23
22
21
20
19
18
17
16
15
14
13
12
11
10
18
PGA16
17
PGA4
PGA8
PGA32
PGA64
16
15
14
Sinc3 Filter, Buffer OFF
1
10
Sinc3 Filter, Buffer OFF
13
100
Data Rate (SPS)
12
1000
0
500
1000
1500
EFFECTIVE NUMBER OF BITS
vs DECIMATION RATIO
22
22
PGA2
PGA1
PGA8
PGA4
21
PGA1
20
20
19
19
ENOB (rms)
ENOB (rms)
fDATA
EFFECTIVE NUMBER OF BITS
vs DECIMATION RATIO
PGA8
PGA4
PGA2
21
2000
fMOD
Decimation Ratio =
18
17
PGA128
PGA64
PGA32
16
PGA16
18
17
PGA16
PGA32
PGA128
PGA64
16
15
15
14
14
Sinc3 Filter, Buffer ON
AVDD = 3V, Sinc3 Filter,
VREF = 1.25V, Buffer OFF
13
13
12
12
0
500
1000
1500
Decimation Ratio =
2000
0
500
f MOD
1000
1500
Decimation Ratio =
fDATA
EFFECTIVE NUMBER OF BITS
vs DECIMATION RATIO
2000
f MOD
fDATA
EFFECTIVE NUMBER OF BITS
vs DECIMATION RATIO
22
22
PGA2
21
PGA4
PGA2
PGA8
21
PGA1
20
20
19
19
ENOB (rms)
ENOB (rms)
PGA128
18
17
16
PGA16
15
PGA32
PGA128
PGA64
PGA4
18
17
PGA32
PGA16
PGA64
PGA128
16
15
14
14
AVDD = 3V, Sinc3 Filter,
VREF = 1.25V, Buffer ON
13
PGA8
PGA1
Sinc2 Filter
13
12
12
0
500
1000
Decimation Ratio =
1500
fMOD
fDATA
2000
0
500
1000
Decimation Ratio =
1500
2000
fMOD
fDATA
15
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
TYPICAL CHARACTERISTICS (Continued)
AVDD = +5V, DVDD = +5V, fOSC = 8MHz, PGA = 1, fDATA = 10Hz, Buffer ON, and VREF = (REF IN+) − (REF IN−) = +2.5V, unless otherwise specified.
FAST SETTLING FILTER
EFFECTIVE NUMBER OF BITS vs DECIMATION RATIO
EFFECTIVE NUMBER OF BITS vs fMOD
(set with ACLK)
22
25
21
20
fMOD = 203kHz
20
18
ENOB (rms)
ENOB (rms)
19
PGA = 1
17
16
PGA = 128
fMOD = 15.6kHz
fMOD = 110kHz
15
fMOD = 31.25kHz
10
15
14
5
Fast Settling Filter
fMOD = 62.5kHz
13
12
0
0
500
1500
1000
Decimation Ratio =
1
2000
10
100k
1.5
2.5
NOISE vs INPUT SIGNAL
0.8
DEC = 2020
DEC = 500
0.7
DEC = 50
DEC = 255
15
Noise (rms, ppm of FS)
20
ENOB (rms)
10k
fDATA
EFFECTIVE NUMBER OF BITS vs fMOD (set with ACLK)
WITH FIXED DECIMATION
25
100
1k
Data Rate (SPS)
fMOD
DEC = 20
10
5
DEC = 10
100
1k
Data Rate (SPS)
10k
0.5
0.4
0.3
0.2
0.1
0
−2.5
0
10
0.6
100k
−1.5
−0.5
0.5
VIN (V)
GAIN vs TEMPERATURE
OFFSET vs TEMPERATURE
1.00010
50
PGA16
PGA1
1.00006
Gain (Normalized)
Offset (ppm of FS)
0
−50
PGA64
−100
0.99994
0.99990
0.99986
−50
−30
−10
10
30
Temperature (°C)
16
0.99998
PGA128
−150
−200
1.00002
50
70
90
−50
−30
−10
10
30
Temperature (°C)
50
70
90
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
TYPICAL CHARACTERISTICS (Continued)
AVDD = +5V, DVDD = +5V, fOSC = 8MHz, PGA = 1, fDATA = 10Hz, Buffer ON, and VREF = (REF IN+) − (REF IN−) = +2.5V, unless otherwise specified.
INTEGRAL NON−LINEARITY vs INPUT SIGNAL
INTEGRAL NON−LINEARITY vs INPUT SIGNAL
10
30
VREF = AVDD, Buffer OFF
8
−40 °C
4
2
INL (ppm of FS)
INL (ppm of FS)
6
20
+85 °C
0
−2
+25 °C
−4
−6
10
0
−10
−20
−8
−10
−2.5
−2
−1.5
−1
−0.5
0
0.5
1
1.5
2
−30
2.5
VIN = −VREF
0
VIN (V)
ADC INTEGRAL NONLINEARITY vs VREF
INL ERROR vs PGA
35
100
VIN = VREF
Buffer OFF
30
AVDD = 3V
90
80
25
INL (ppm of FS)
ADC INL (ppm of FS)
VIN = +VREF
VIN (V)
20
AVDD = 5V
15
10
70
60
50
40
30
20
5
10
0
0
0.5 1.0 1.5
2.0
2.5
3.0 3.5 4.0
4.5
0
5.0 5.5
1
2
4
8
VREF (V)
2.4
2.3
64
128
64
128
900
+85°C
PGA = 128, ADC ON,
Brownout Detect ON,
All VDACs ON = FFFFH ,
VDACs REF = AVDD
AVDD = 5V, Buffer = ON
800
Buffer = OFF
+25°C
700
600
2.2
−40°C
2.1
2.0
1.9
IADC (µ A)
Analog Supply Current (mA)
2.5
32
ADC CURRENT vs PGA
MAXIMUM ANALOG SUPPLY CURRENT
2.6
16
PGA Setting
500
AVDD = 3V, Buffer = ON
400
Buffer = OFF
300
1.8
200
1.7
100
1.6
0
1.5
2.5
3.0
3.5
4.0
4.5
Analog Supply Voltage (V)
5.0
5.5
0
1
2
4
8
16
32
PGA Setting
17
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
TYPICAL CHARACTERISTICS (Continued)
AVDD = +5V, DVDD = +5V, fOSC = 8MHz, PGA = 1, fDATA = 10Hz, Buffer ON, and VREF = (REF IN+) − (REF IN−) = +2.5V, unless otherwise specified.
VREFOUT vs LOAD CURRENT
2.510
4000
2.508
3500
2.506
3000
2.504
VREFOUT (V)
Number of Occurrences
HISTOGRAM OF OUTPUT DATA
4500
2500
2000
1500
2.502
2.500
2.498
2.496
1000
2.494
500
2.492
0
−2
−1.5
−1
−0.5
2.490
0
0.5
1
1.5
2
0
ppm of FS
0.4
0.8
1.2
1.6
2.0
2.4
VREFOUT Current Load (mA)
OFFSET DAC: GAIN vs TEMPERATURE
OFFSET DAC: OFFSET vs TEMPERATURE
1.00006
10
8
1.00004
4
Normalized Gain
Offset (ppm of FSR)
6
2
0
−2
−4
−6
−8
1.00002
1
0.99998
0.99996
−10
−12
0.99994
−40
+25
+85
−40
+25
Temperature (°C)
Temperature (°C)
DIGITAL CURRENT vs FREQUENCY
DIGITAL STOP CURRENT vs FREQUENCY with EXT CLOCK
100
5V All Periph ON
5V All Periph OFF
5V All Periph ON IDLE
Digital Current (µA)
Supply Current (mA)
100
3V All Periph ON
3V All Periph OFF
3V All Periph ON IDLE
10
1
10
1
0.1
1
10
100
Clock Frequency (MHz)
18
+85
1000
0
10
20
Clock Frequency (MHz)
30
40
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
TYPICAL CHARACTERISTICS (Continued)
AVDD = +5V, DVDD = +5V, fOSC = 8MHz, PGA = 1, fDATA = 10Hz, Buffer ON, and VREF = (REF IN+) − (REF IN−) = +2.5V, unless otherwise specified.
NORMALIZED GAIN vs PGA
DIGITAL SUPPLY CURRENT vs SUPPLY VOLTAGE
101
+85°C
100
Normalized Gain (%)
15
−40°C
+25°C
10
5
99
98
97
Buffer = ON
0
96
2.5
3.0
3.5
4.0
4.5
5.0
5.5
1
2
4
8
16
32
64
128
PGA Setting
Supply Voltage (V)
CMOS DIGITAL OUTPUT
5.0
4.5
5V
Low
Output
4.0
Output Voltage (V)
Digital Supply Current (mA)
20
3.5
3V
Low
Output
3.0
2.5
2.0
1.5
5V
1.0
0.5
3V
0
0
10
20
30
40
50
60
70
Output Current (mA)
19
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The microcontroller core is 8051 instruction set
compatible. The microcontroller core is an optimized 8051
core that executes up to three times faster than the
standard 8051 core, given the same clock source. That
makes it possible to run the device at a lower external clock
frequency and achieve the same performance at lower
power than the standard 8051 core.
DESCRIPTION
The MSC1210Yx is a completely integrated family of
mixed-signal devices incorporating a high-resolution
delta-sigma ADC, 8-channel multiplexer, burnout current
sources, selectable buffered input, offset DAC
(Digital-to-Analog Converter), Programmable Gain
Amplifier (PGA), temperature sensor, voltage reference,
8-bit microcontroller, Flash Program Memory, Flash Data
Memory, and Data SRAM, as shown in Figure 8.
The MSC1210Yx allows the user to uniquely configure the
Flash and SRAM memory maps to meet the needs of their
application. The Flash is programmable down to 2.7V
using both serial and parallel programming methods. The
Flash endurance is 1 million Erase/Write cycles. In
addition, 1280 bytes of RAM are incorporated on-chip.
On-chip peripherals include an additional 32-bit
accumulator, an SPI-compatible serial port, dual USARTs,
multiple digital input/output ports, watchdog timer,
low-voltage detect, on-chip power-on reset, 16-bit PWM,
and system timers, brownout reset, and three
timer/counters.
The part has separate analog and digital supplies, which
can be independently powered from 2.7V to +5.5V. At +3V
operation, the power dissipation for the part is typically less
than 4mW. The MSC1210Yx is packaged in a TQFP-64
package.
The device accepts low-level differential or single-ended
signals directly from a transducer. The ADC provides 24
bits of resolution and 24 bits of no-missing-code
performance using a Sinc3 filter with a programmable
sample rate. The ADC also has a selectable filter that
allows for high-resolution single-cycle conversion.
AVDD
AGND
REF OUT
The MSC1210Yx is designed for high-resolution
measurement applications in smart transmitters, industrial
process control, weigh scales, chromatography, and
portable instrumentation.
REF IN+
(1)
REF IN−
DVD D
DGND
+AVDD
LVD
VR EF
Timers/
Counters
EA
ALE
PSEN
BOR
Temperature
Sensor
AIN0
8−Bit
PGA Offset
WDT
REF
AIN1
Alternate
Functions
AIN2
AIN3
AIN4
MUX
BUFFER
PGA
Modulator
AIN5
Up to 32K
FLASH
AIN6
AIN7
AINCOM
1.2K
SRAM
PORT0
8
ADDR
DATA
PORT1
8
T2
SPI/EXT
USART2
PORT2
8
ADDR
PORT3
8
USART1
EXT
T0
T1
RW
Digital
Filter
ACC
8051
SFR
Clock
Generator
SPI
RST
POR
AGND
XIN
XOUT
NOTE (1) REF IN− must be tied to AGND when using internal VREF.
Figure 8. Block Diagram
20
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
CLK
instr_cycle
cpu_cycle
n+1
C1
C2
n+2
C3
C4
C1
C2
C3
C4
C1
Figure 9. Instruction Timing Cycle
The MSC1210 also provides dual data pointers (DPTRs)
to speed block Data Memory moves.
Additionally, it can stretch the number of memory cycles to
access external Data Memory from between two and nine
instruction cycles in order to accommodate different
speeds of memory or devices, as shown in Table 1. The
MSC1210 provides an external memory interface with a
16-bit address bus (P0 and P2). The 16-bit address bus
makes it necessary to multiplex the low address byte
through the P0 port. To enhance P0 and P2 for high-speed
memory access, hardware configuration control is
provided to configure the ports for external
memory/peripheral interface or general-purpose I/O.
Furthermore, improvements were made to peripheral
features that off-load processing from the core, and the
user, to further improve efficiency. For instance, 32-bit
accumulation can be done through the summation register
to significantly reduce the processing overhead for the
multiple byte data from the ADC or other sources. This
CKCON
(8Eh)
MD2:MD0
INSTRUCTION
CYCLES
(for MOVX)
RD or WR
STROBE WIDTH
(SYS CLKs)
RD or WR
STROBE WIDTH
(ms) AT 12MHz
000
2
2
0.167
001
3 (default)
4
0.333
010
4
8
0.667
011
5
12
1.000
100
6
16
1.333
101
7
20
1.667
110
8
24
2.000
111
9
28
2.333
Single−Byte, Single−Cycle
Instruction
ALE
PSEN
0
Therefore, a device frequency of 33MHz for the
MSC1210Yx actually performs at an equivalent execution
speed of 82.5MHz compared to the standard 8051 core.
This allows the user to run the device at slower external
clock speeds which reduces system noise and power
consumption, but provides greater throughput. This
performance difference can be seen in Figure 10. The
timing of software loops will be faster with the MSC1210.
However, the timer/counter operation of the MSC1210
may be maintained at 12 clocks per increment or optionally
run at 4 clocks per increment.
Table 1. Memory Cycle Stretching. Stretching of
MOVX timing as defined by MD2, MD1, and MD0
bits in CKCON register (address 8Eh).
MSC121 Timing
All instructions in the MSC1210 family perform exactly the
same functions as they would in a standard 8051. The
effect on bits, flags, and registers is the same. However,
the timing is different. The MSC1210 family utilizes an
efficient 8051 core which results in an improved instruction
execution speed of between 1.5 and 3 times faster than the
original core for the same external clock speed (4 clock
cycles per instruction versus 12 clock cycles per
instruction, as shown in Figure 9). The internal system
clock is equal to the external oscillator frequency. This
translates into an effective throughput improvement of
more than 2.5 times, using the same code and same
external clock speed.
allows for 32-bit addition and shifting to be accomplished
in a few instruction cycles, compared to hundreds of
instruction cycles through a software implementation.
AD0−AD7
PORT 2
4 Cycles
CLK
12 Cycles
Standard 8051 Timing
ENHANCED 8051 CORE
ALE
PSEN
AD0−AD7
PORT 2
Single−Byte, Single−Cycle
Instruction
Figure 10. Comparison of MSC1210 Timing to
Standard 8051 Timing
21
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
Family Device Compatibility
OVERVIEW
The hardware functionality and pin configuration across the
MSC1210 family are fully compatible. To the user the only
difference between family members is the memory
configuration. This makes migration between family
members simple. Code written for the MSC1210Y2 can be
executed directly on an MSC1210Y3, MSC1210Y4, or
MSC1210Y5. This gives the user the ability to add or subtract
software functions and to freely migrate between family
members. Thus, the MSC1210 can become a standard
device used across several application platforms.
The MSC1210 ADC structure is shown in Figure 11. The
figure lists the components that make up the ADC, along
with the corresponding special function register (SFR)
associated with each component.
INPUT MULTIPLEXER
The input multiplexer provides for any combination of
differential inputs to be selected as the input channel, as
shown in Figure 12. If AIN0 is selected as the positive
differential input channel, any other channel can be selected
as the negative differential input channel. With this method,
it is possible to have up to eight fully differential input
channels. It is also possible to switch the polarity of the
differential input pair to negate any offset voltages.
Family Development Tools
The MSC1210 is fully compatible with the standard 8051
instruction set. This means that the user can develop
software for the MSC1210 with their existing 8051
development tools. Additionally, a complete, integrated
development environment is provided with each demo
board, and third-party developers also provide support.
In addition, current sources are supplied that will source or
sink current to detect open or short circuits on the pins.
TEMPERATURE SENSOR
Power Down Modes
On-chip diodes provide temperature sensing capability.
When the configuration register for the input MUX is set to
all 1s, the diodes are connected to the input of the ADC.
All other channels are open.
The MSC1210 can power several of the on-chip peripherals
and put the CPU into IDLE. For more information, see page
26.
AV DD
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AINCOM
Burnout
Detect
REFIN+
fSA M P
Input
Multiplexer
In+
Sample
and Hold
Buffer
In−
Σ
PGA
Temperature
Sensor
Burnout
Detect
D7 H ADMUX
REFIN+
f MO D
Offset
DAC
REFIN−
AGND
DC H ADC0N0
F6 H
ACLK
E6H
ODAC
fDA TA
FAST
V IN
∆Σ ADC
Modulator
SINC2
SINC3
Σ
X
Offset
Calibration
Register
Gain
Calibration
Register
ADC
Result Register
AUTO
REFIN−
Summation
Block
Σ
DD H ADCON1
OCR
GCR
ADRES
DEH ADCON2
D3H D2 H D1 H
D6H D5H D4 H
DBH DA H D9 H
DFH ADCON3
SUMR
E5 H E4 H E3 H E2H
E1H
Figure 11. MSC1210 ADC Structure
22
SSCON
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The input impedance of the MSC1210 without the buffer is
7MΩ/PGA. The buffer is controlled by the state of the BUF
bit in the ADC control register (ADCON0 DCh).
AIN 0
ANALOG INPUT
AIN 1
When the buffer is not selected, the input impedance of the
analog input changes with ACLK clock frequency (ACLK
F6h) and gain (PGA). The relationship is:
AV D D
Burnout Detect
Current Source
AIN 2
AIN Impedance(W) +
1
Ǔ
ǒACLK Frequency
Ǔ @ ǒ7MW
PGA
AIN 3
where ACLK frequency +
In+
AIN 4
and modclk + f MOD +
In−
f OSC
(ACLK)1)
f ACLK
.
64
NOTE: The input impedance for PGA = 128 is the same as that for
7MW
).
PGA = 64 ( that is,
64
AIN 5
Burnout Detect
Current Sink
Figure 13 shows the basic input structure of the MSC1210.
AIN 6
Temperature Sensor
AGND
AIN 7
80 • I
I
Rswitch
(3k typical)
High Impedance
> 1GΩ
AIN
AIN CO M
Figure 12. Input Multiplexer Configuration
BURNOUT DETECT
When the Burnout Detect (BOD) bit is set in the ADC
control configuration register (ADCON0 DCh), two current
sources are enabled. The current source on the positive
input channel sources approximately 2µA of current. The
current source on the negative input channel sinks
approximately 2µA. This allows for the detection of an
open circuit (full-scale reading) or short circuit (small
differential reading) on the selected input differential pair.
Buffer should be on for sensor burnout detection.
INPUT BUFFER
The analog input impedance is always high, regardless of
PGA setting (when the buffer is enabled). With the buffer
enabled, the input voltage range is reduced and the analog
power-supply current is higher. If the limitation of input
voltage range is acceptable, then the buffer is always
preferred.
CS
(9pF typical)
Sampling
Frequency = fSAMP
PGA
fSAMP
1, 2, 4
modclk
8
2 * modclk
16
4 * modclk
32
8 * modclk
64, 128
16 * modclk
AGND
PGA
1
2
4 to 128
CS
9pF
18pF
36pF
Figure 13. Analog Input Structure
MODULATOR
The modulator is a single-loop 2nd-order system. The
modulator runs at a clock speed (fMOD) that is derived from
the CLK using the value in the Analog Clock (ACLK)
register (SFR F6h). The data rate is:
Data Rate +
where f MOD +
f MOD
Decimation Ratio
f OSC
(ACLK)1) @ 64
23
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PGA
The PGA can be set to gains of 1, 2, 4, 8, 16, 32, 64, or 128.
Using the PGA can actually improve the effective
resolution of the ADC. For instance, with a PGA of 1 on a
±2.5V full-scale range, the ADC can resolve to 1.5µV. With
a PGA of 128 on a ±19mV full-scale range, the ADC can
resolve to 75nV, as shown in Table 2.
Table 2. ENOB versus PGA (Bipolar Mode)
RMS
PGA
FULL-SCALE
ENOB
MEASUREMENT
SETTING
RANGE (V)
AT 10HZ
RESOLUTION (nV)
1
±2.5V
21.7
1468
2
±1.25
21.5
843
4
±0.625
21.4
452
8
±0.313
21.2
259
16
±0.156
20.8
171
32
±0.0781
20.4
113
64
±0.039
20
74.5
128
±0.019
19
74.5
Calibration should be performed after power on, a change
in temperature, decimation ratio, buffer, or a change of the
PGA. Calibration will remove the effects of the Offset DAC;
therefore, changes to the Offset DAC register must be
done after calibration.
At the completion of calibration, the ADC Interrupt bit goes
HIGH which indicates the calibration is finished and valid
data is available.
DIGITAL FILTER
The Digital Filter can use either the Fast Settling, Sinc2, or
Sinc3 filter, as shown in Figure 14. In addition, the Auto
mode changes the Sinc filter after the input channel or
PGA is changed. When switching to a new channel, it will
use the Fast Settling filter for the next two conversions (the
first of which should be discarded). It will then use the Sinc2
followed by the Sinc3 filter to improve noise performance.
Adjustable Digital Filter
Sinc3
OFFSET DAC
The analog input to the PGA can be offset by up to half the
full-scale input range of the PGA by using the ODAC
register (SFR E6h). The ODAC (Offset DAC) register is an
8-bit value; the MSB is the sign and the seven LSBs
provide the magnitude of the offset. Since the ODAC
introduces an analog (instead of digital) offset to the PGA,
using the ODAC does not reduce the range of the ADC.
CALIBRATION
The offset and gain errors in the MSC1210, or the
complete system, can be reduced with calibration.
Calibration is controlled through the ADCON1 register
(SFR DDh), bits CAL2:CAL0. Each calibration process
takes seven tDATA (data conversion time) periods to
complete. Therefore, it takes 14 tDATA periods to complete
both an offset and gain calibration.
For system calibration, the appropriate signal must be
applied to the inputs. The system offset command requires
a zero differential input signal. It then computes an offset
value that will nullify offsets in the system. The system gain
command requires a positive full-scale differential input
signal. It then computes a value to nullify gain errors in the
system. Each of these calibrations will take seven tDATA
periods to complete.
24
Modulator
Sinc2
Data Out
Fast Settling
FILTER SETTLING TIME
SETTLING TIME
FILTER
(Conversion Cycles)(1)
Sinc3
3
Sinc2
2
Fast
1
NOTE: (1) MUX change may add one cycle.
AUTO MODE FILTER SELECTION
CONVERSION CYCLE
1
2
3
Discard
Fast
Sinc2
4
Sinc3
Figure 14. Filter Step Responses
This combines the low-noise advantage of the Sinc3 filter
with the quick response of the Fast Settling Time filter. The
frequency response of each filter is shown in Figure 15.
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VOLTAGE REFERENCE
The MSC1210 can use either an internal or external
voltage reference. The voltage reference selection is
controlled via ADC Control Register 0 (ADCON0, SFR
DCh). The default power-up configuration for the voltage
reference is 2.5V internal.
SINC3
FILTER RESPONSE
(−3dB = 0.262 • fDATA)
0
−20
Gain (dB)
−40
−60
−80
−100
−120
0
1
2
3
4
5
f DATA
If the external voltage reference is selected, it can be used
as either a single-ended input or differential input, for
ratiometric measures. When using an external reference,
it is important to note that the input current will increase for
VREF with higher PGA settings and with a higher
modulator frequency. The external voltage reference can
be used over the input range specified in the Electrical
Characteristics section.
SINC2 FILTER RESPONSE
(−3dB = 0.318 • fDATA )
0
−20
Gain (dB)
−40
−60
−80
POWER-ON RESET
−100
−120
0
1
2
3
4
5
fDATA
FAST SETTLING FILTER RESPONSE
(−3dB = 0.469 • f DATA)
0
−20
−40
Gain (dB)
The internal voltage reference can be selected as either
1.25V or 2.5V. The analog power supply (AVDD) must be
within the specified range for the selected internal voltage
reference. The valid ranges are: VREF = 2.5 internal
(AVDD = 3.3V to 5.25V) and VREF = 1.25 internal
(AVDD = 2.7V to 5.25V). If the internal VREF is selected,
then the REFOUT pin must be connected to REFIN+, and
AGND must be connected to REFIN−. The REFOUT pin
should also have a 0.1µF capacitor connected to AGND,
as close as possible to the pin. If the internal VREF is not
used, then VREF should be disabled in ADCON0.
The on-chip power-on reset (POR) circuitry releases the
device from reset at approximately DVDD = 2.0V. The POR
accommodates power-supply ramp rates as slow as
1V/10ms. To ensure proper operation, the power supply
should ramp monotonically. Note that as the device is
released from reset and program execution begins, the
device current consumption may increase, which may
result in a power-supply voltage drop. If the power supply
ramps at a slower rate, is not monotonic, or a brownout
condition occurs (where the supply does not drop below
the 2.0V threshold), then improper device operation may
occur. The on-chip brownout reset may provide benefit in
these conditions. Figure 16 shows a POR circuit.
−60
DVDD
−80
MSC1210
0.1µF
−100
10kΩ
13
RST
−120
0
1
2
3
4
5
1MΩ
f DATA
NOTE: fDATA = Data Output Rate = 1/tDATA
Figure 15. Filter Frequency Responses
Figure 16. POR Circuit
25
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BROWNOUT RESET
The BOR level should be chosen to match closely with the
application. For example, with a high external clock
frequency, the BOR level should match the minimum
operating voltage range for the device, or improper
operation may still occur.
The brownout reset (BOR) is enabled through Hardware
Configuration Register 1 (HCR1). If the conditions for
proper POR are not met or the device encounters a
brownout condition that does not generate a POR, the
BOR can be used to ensure proper device operation. The
BOR will hold the state of the device when the power
supply drops below the threshold level programmed in
HCR1, and then generate a reset when the supply rises
above the threshold level. Note that as the device is
released from reset, and program execution begins, the
device current consumption may increase, which may
result in a power-supply voltage drop, which may initiate
another brownout condition.
SYS Clock
Oscillator
Note that AVDD must rise above 2.0V for the Analog
Brownout Reset function to be disabled; otherwise, it will
be enabled and hold the device in reset.
POWER-DOWN MODES
The MSC1210 can power several of the on-chip
peripherals and put the CPU into IDLE. This is
accomplished by shutting off the clocks to those sections,
as shown in Figure 17. For lowest power, be sure that the
FRCM bit in FMCON is set.
STOP
SPICON
SCK
9A
t CLK
PDCON.0
PWMHI
A3
PWMLOW
A2
PWM Clock
PDCON.4
µs
USEC
FTCON
Flash Write
(30µs to 40µs)
[3:0]
EF Timing
FB
ms
MSECH
MSECL
FD
FC
FTCON
[7:4]
EF
Flash Erase (5ms to 11ms)
Timing
milliseconds
interrupt
MSINT
FA
PDCON.1
seconds
interrupt
SECINT
F9
100ms
HMSEC
WDTCON
FF
FE
PDCON.2
ACLK
F6
divide
by 64
ADC Power Down
ADCON3
ADCON2
DF
DE
Decimation Ratio
ADCON0
PDCON.3
DC
ADC Output Rate
fSAMP (see Figure 13)
fMOD
Timers 0/1/2
IDLE
USART0/1
CPU Clock
Figure 17. MSC1210 Timing Chain and Clock Control
26
watchdog
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MEMORY MAP
FLASH MEMORY
The MSC1210 contains on-chip SFR, Flash Memory,
Scratchpad SRAM Memory, Boot ROM, and SRAM. THe
SFR registers are primarily used for control and status.
The standard 8051 features and additional peripheral
features of the MSC1210 are controlled through the SFR.
Reading from an undefined SFR and writing to undefined
SFR registers is not recommended, and will have
indeterminate effects.
The MSC1210 uses a memory addressing scheme that
separates Program Memory (FLASH/ROM) from Data
Memory (FLASH/RAM). Each area is 64kB beginning at
address 0000h and ending at FFFFh, as shown in
Figure 18. The program and data segments can overlap
since they are accessed in different ways. Program
Memory is fetched by the microcontroller automatically.
There is one instruction (MOVC) that is used to explicitly
read the program area. This is commonly used to read
lookup tables.
Flash Memory is used for both Program Memory and Data
Memory. The user has the ability to select the partition size
of Program and Data Memories. The partition size is set
through hardware configuration bits, which are
programmed through either the parallel or serial
programming methods. Both Program and Data Flash
Memories are erasable and writable (programmable) in
User Application mode (UAM). However, program
execution can only occur from Program Memory. As an
added precaution, a lock feature can be activated through
the hardware configuration bits, which disables erase and
writes to 4kB of Program Flash Memory or the entire
Program Flash Memory in UAM.
The MSC1210 includes 1kB of SRAM on-chip. SRAM
starts at address 0 and is accessed through the MOVX
instruction. This SRAM can also be located to start at
8400h and can be accessed as both Program and Data
Memory.
The Data Memory area is accessed explicitly using the
MOVX instruction. This instruction provides multiple ways
of specifying the target address. It is used to access the
64kB of Data Memory. The address and data range of
devices with on-chip Program and Data Memory overlap
the 64kB memory space. When on-chip memory is
enabled, accessing memory in the on-chip range will
cause the device to access internal memory. Memory
accesses beyond the internal range will be addressed
externally via Ports 0 and 2.
The MSC1210 has two Hardware Configuration registers
(HCR0 and HCR1) that are programmable only during
Flash Memory Programming mode.
2k Internal Boot ROM
FFFFh
FFFFh
F800h
External
Program
Memory
Select in
MCON
Data
Memory
External
Data
Memory
Can Be Mapped to
Either Memory Space
1k RAM or External
External Memory
8800h
8400h, 33k (Y5)
8000h, 32k (Y5)
On−Chip
4000h, 16k (Y4)
Flash
2000h, 8k (Y3)
1k RAM or External
8800h
8400h, 33k (Y5)
4400h, 17k (Y4)
Select in
MCON
Select in
HCR0
Program
Memory
On−Chip
2400h, 9k (Y3)
Flash
1400h, 5k (Y2)
1000h, 4k (Y2)
0000h, 0k
1k RAM or External
0400h, 1k
Figure 18. Memory Map
27
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The MSC1210 allows the user to partition the Flash
Memory between Program Memory and Data Memory. For
instance, the MSC1210Y5 contains 32kB of Flash
Memory on-chip. Through the HW configuration registers,
the user can define the partition between Program
Memory (PM) and Data Memory (DM), as shown in Table 3
and Table 4. The MSC1210 family offers four memory
configurations, as shown.
Table 3. MSC1210 Flash Partitioning
HCR0
MSC1210Y2
MSC1210Y3
MSC1210Y4
DFSEL
PM
DM
PM
DM
PM
DM
MSC1210Y5
PM
DM
000
0kB
4kB
0kB
8kB
0kB
16kB
0kB
32kB
001
0kB
4kB
0kB
8kB
0kB
16kB
0kB
32kB
010
0kB
4kB
0kB
8kB
0kB
16kB
16kB
16kB
011
0kB
4kB
0kB
8kB
8kB
8kB
24kB
8kB
100
0kB
4kB
4kB
4kB
12kB
4kB
28kB
4kB
101
2kB
2kB
6kB
2kB
14kB
2kB
30kB
2kB
110
3kB
1kB
7kB
1kB
15kB
1kB
31kB
1kB
111
(default)
4kB
0kB
8kB
0kB
16kB
0kB
32kB
0kB
NOTE: When a 0kB program memory configuration is selected, program
execution is external.
Table 4. MSC1210 Flash Memory Partitioning
HCR0
MSC1210Y3
MSC1210Y4
MSC1210Y5
DFSEL
MSC1210Y2
PM
DM
PM
DM
PM
DM
PM
DM
000
0000
040013FF
0000
040023FF
0000
040043FF
0000
000083FF
001
0000
040013FF
0000
040023FF
0000
040043FF
0000
040083FF
010
0000
040013FF
0000
040023FF
0000
040043FF
00003FFF
040043FF
011
0000
040013FF
0000
040023FF
00001FFF
040023FF
00005FFF
040023FF
100
0000
040013FF
00000FFF
040013FF
00002FFF
040013FF
00006FFF
040013FF
101
000007FF
04000BFF
000017FF
04000BFF
000037FF
04000BFF
000077FF
04000BFF
110
00000BFF
040007FF
00001BFF
040007FF
00003BFF
040007FF
00007BFF
040007FF
111
(default)
00000FFF
0000
00001FFF
0000
00003FFF
0000
00007FFF
0000
NOTE: Program memory accesses above the highest listed address will
access external program memory.
28
It is important to note that the Flash Memory is readable
and writable by the user through the MOVX instruction
when configured as either Program or Data Memory (via
the MXWS bit in the MWS, SFR 8Fh). This means that the
user may partition the device for maximum Flash Program
Memory size (no Flash Data Memory) and use Flash
Program Memory as Flash Data Memory. This may lead to
undesirable behavior if the PC points to an area of Flash
Program Memory that is being used for data storage.
Therefore, it is recommended to use Flash partitioning
when Flash Memory is used for data storage. Flash
partitioning prohibits execution of code from Data Flash
Memory. Additionally, the Program Memory erase/write
can be disabled through hardware configuration bits
(HCR0), while still providing access (read/write/erase) to
Data Flash Memory.
The effect of memory mapping on Program and Data
Memory is straightforward. The Program Memory is
decreased in size from the top of internal Program
Memory. Therefore, if the MSC1210Y5 is partitioned with
31kB of Flash Program Memory and 1kB of Flash Data
Memory, external Program Memory execution will begin at
7C00h (versus 8000h for 32kB). The Flash Data Memory
is added on top of the SRAM memory. Therefore, access
to Data Memory (through MOVX) will access SRAM for
addresses 0000h−03FFh and access Flash Memory for
addresses 0400h−07FFh.
Data Memory
The MSC1210 can address 64kB of Data Memory.
Scratchpad Memory provides 256 bytes in addition to the
64kB of Data Memory. The MOVX instruction is used to
access the Data SRAM Memory. This includes 1,024
bytes of on-chip Data SRAM Memory. The data bus values
do not appear on Port 0 (during data bus timing) for internal
memory access.
The MSC1210 also has on-chip Flash Data Memory which
is readable and writable (depending on Memory Write
Select register) during normal operation (full VDD range).
This memory is mapped into the external Data Memory
space directly above the SRAM.
The MOVX instruction is used to write the flash memory.
Flash memory must be erased before it can be written.
Flash memory is erased in 128 byte pages.
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
REGISTER MAP
The Register Map is illustrated in Figure 19. It is entirely
separate from the Program and Data Memory areas
mentioned before. A separate class of instructions is used
to access the registers. There are 256 potential register
locations. In practice, the MSC1210 has 256 bytes of
Scratchpad RAM and up to 128 SFRs. This is possible,
since the upper 128 Scratchpad RAM locations can only
be accessed indirectly. Thus, a direct reference to one of
the upper 128 locations must be an SFR access. Direct
RAM is reached at locations 0 to 7Fh (0 to 127).
255
Indirect
RAM
80h
FFh
Direct
Special
Function
Registers
Indirect
RAM
7Fh
80h
128
7Fh
FFh
Direct
RAM
SFR Registers
Direct
RAM
0000h
Scratchpad
RAM
Figure 19. Register Map
SFRs are accessed directly between 80h and FFh (128 to
255). The RAM locations between 128 and 255 can be
reached through an indirect reference to those locations.
Scratchpad RAM is available for general-purpose data
storage. It is commonly used in place of off-chip RAM
when the total data contents are small. When off-chip RAM
is needed, the Scratchpad area will still provide the fastest
general-purpose access. Within the 256 bytes of RAM,
there are several special-purpose areas.
Bit Addressable Locations
In addition to direct register access, some individual bits
are also accessible. These are individually addressable
bits in both the RAM and SFR area. In the Scratchpad
RAM area, registers 20h to 2Fh are bit addressable. This
provides 128 (16 × 8) individual bits available to software.
A bit access is distinguished from a full-register access by
the type of instruction. In the SFR area, any register
location ending in a 0 or 8 is bit addressable. Figure 20
shows details of the on-chip RAM addressing including the
locations of individual RAM bits.
Working Registers
As part of the lower 128 bytes of RAM, there are four banks
of Working Registers, as shown in Figure 20. The Working
Registers are general-purpose RAM locations that can be
addressed in a special way. They are designated R0
through R7. Since there are four banks, the currently
2Fh
7F
7E
7D
7C
7B
7A
79
78
2Eh
77
76
75
74
73
72
71
70
2Dh
6F
6E
6D
6C
6B
6A
69
68
2Ch
67
66
65
64
63
62
61
60
2Bh
5F
5E
5D
5C
5B
5A
59
58
2Ah
57
56
55
54
53
52
51
50
29h
4F
4E
4D
4C
4B
4A
49
48
28h
47
46
45
44
43
42
41
40
27h
3F
3E
3D
3C
3B
3A
39
38
26h
37
36
35
34
33
32
31
30
25h
2F
2E
2D
2C
2B
2A
29
28
24h
27
26
25
24
23
22
21
20
23h
1F
1E
1D
1C
1B
1A
19
18
22h
17
16
15
14
13
12
11
10
21h
0F
0E
0D
0C
0B
0A
09
08
20h
07
06
05
04
03
02
01
00
Bit Addressable
FFh
selected bank will be used by any instruction using
R0—R7. This allows software to change context by simply
switching banks. This is controlled via the Program Status
Word register (PSW; 0D0h) in the SFR area described
below. Registers R0 and R1 also allow their contents to be
used for indirect addressing of the upper 128 bytes of
RAM. Thus, an instruction can designate the value stored
in R0 (for example) to address the upper RAM. The 16
bytes immediately above the R0—R7 registers are bit
addressable. So any of the 128 bits in this area can be
directly accessed using bit addressable instructions.
1Fh
Bank 3
18h
17h
Bank 2
10h
0Fh
Bank 1
08h
07h
Bank 0
0000h
MSB
LSB
Figure 20. Scratchpad Register Addressing
29
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
Stack
ACCESSING EXTERNAL MEMORY
Another use of the Scratchpad area is for the
programmer’s stack. This area is selected using the Stack
Pointer (SP; 81h) SFR. Whenever a call or interrupt is
invoked, the return address is placed on the Stack. It also
is available to the programmer for variables, etc., since the
Stack can be moved and there is no fixed location within
the RAM designated as Stack. The Stack Pointer will
default to 07h on reset. The user can then move it as
needed. A convenient location would be the upper RAM
area (> 7Fh) since this is only available indirectly. The SP
will point to the last used value. Therefore, the next value
placed on the Stack is put at SP + 1. Each PUSH or CALL
will increment the SP by the appropriate value. Each POP
or RET will decrement as well.
Program Memory
After reset, the CPU begins execution from Program
Memory location 0000h. The selection of where Program
Memory execution begins is made by tying the EA pin to
DVDD for internal access, or DGND for external access.
When EA is tied to DVDD, any PC fetches outside the
internal Program Memory address occur from external
memory. If EA is tied to DGND, then all PC fetches
address external memory. The standard internal Program
Memory size for MSC1210 family members is shown in
Table 5. If enabled the Boot ROM will appear from address
F800h to FFFFh.
Table 5. MSC1210 Maximum Internal Program
Memory Sizes
30
PRODUCT
STANDARD INTERNAL
PROGRAM MEMORY SIZE (BYTES)
MSC1210Y5
32k
MSC1210Y4
16k
MSC1210Y3
8k
MSC1210Y2
4k
If external memory is used, P0 and P2 can be configured
as address and data lines. If external memory is not used,
P0 and P2 can be configured as general-purpose I/O lines
through the Hardware Configuration Register.
To enable access to external memory, bits 0 and 1 of the
HCR1 register must be set to 0. When these bits are
enabled all memory addresses for both internal and
external memory will appear on ports 0 and 2. During the
data portion of the cycle for internal memory, Port 0 will be
zero for security purposes.
Accesses to external memory are of two types: accesses
to external Program Memory and accesses to external
Data Memory. Accesses to external Program Memory use
signal PSEN (program store enable) as the read strobe.
Accesses to external Data Memory use RD or WR
(alternate functions of P3.7 and P3.6) to strobe the
memory.
External Program Memory and external Data Memory may
be combined if desired by applying the RD and PSEN
signals to the inputs of an AND gate and using the output
of the gate as the read strobe to the external Program/Data
Memory.
Program fetches from external Program Memory always
use a 16-bit address. Accesses to external Data Memory
can use either a 16-bit address (MOVX @DPTR) or an
8-bit address (MOVX @RI).
If Port 2 is selected for external memory use (HCR1, bit 0),
it cannot be used as general-purpose I/O. This bit (or Bit
1 of HCR1) also forces bits P3.6 and P3.7 to be used for
WR and RD instead of I/O. Port 2, P3.6, and P3.7 should
all be written to ‘1.’
If an 8-bit address is being used (MOVX @RI), the
contents of the MPAGE (92h) SFR remain at the Port 2
pins throughout the external memory cycle. This will
facilitate paging.
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In any case, the low byte of the address is time-multiplexed
with the data byte on Port 0. The ADDR/DATA signals use
CMOS drivers in the Port 0, Port 2, WR, and RD output
buffers. Thus, in this application the Port 0 pins are not
open-drain outputs, and do not require external pull-ups for
high-speed access. Signal ALE (Address Latch Enable)
should be used to capture the address byte into an external
latch. The address byte is valid at the negative transition
of ALE. Then, in a write cycle, the data byte to be written
appears on Port 0 just before WR is activated, and remains
there until after WR is deactivated. In a read cycle, the
incoming byte is accepted at Port 0 just before the read
strobe is deactivated.
The functions of Port 0 and Port 2 are selected in Hardware
Configuration Register 1. This can only be changed during
the Flash Program mode. There is no conflict in the use of
these registers; they will either be used as
general-purpose I/O or for external memory access. The
default state is for Port 0 and Port 2 to be used as
general-purpose I/O. If an external memory access is
attempted when they are configured as general-purpose
I/O, the values of Port 0 and Port 2 will not be affected.
Boot ROM
There is a 2kB Boot ROM that controls operation during
serial or parallel programming. Additionally, the Boot ROM
routines can be accessed during the user mode if it is
enabled. When enabled, the Boot ROM routines will be
located at memory addresses F800h−FFFFh during user
mode. In program mode the Boot ROM is located in the first
2kB of Program Memory. For additional information, refer
to the Application Note SBAA085, available for download
from the TI web site (www.ti.com).
Flash Programming Mode
There are two programming modes: parallel and serial. The
programming mode is selected by the state of the ALE and
PSEN signals during power-on reset. Serial programming
mode is selected with PSEN = 0 and ALE = 1. Parallel
programming mode is selected with PSEN = 1 and ALE = 0
(see Figure 21). If they are both HIGH, the MSC1210 will
operate in normal user mode. Both signals LOW is a
reserved mode and is not defined. Programming mode is
exited with a reset (BOR, WDT, software, or POR) and the
normal mode selected.
External Program Memory is accessed under two
conditions:
2. Whenever the Program Counter (PC) contains a
number that is outside of the internal Program
Memory address range, if the ports are enabled.
PSEL
P2[7]
AddrHi[6:0]
NC
Programming Flash Memory
There are four sections of Flash Memory for programming:
1. 128 configuration bytes.
2. Reset sector (4kB) (not to be confused with the 2kB
Boot ROM).
Flash
Programmer
P2[6:0]
PSEN
AddrLo[7:0]
P1[7:0]
Data[7:0]
ALE
If Port 0 and Port 2 are selected for external memory, all 8
bits of Port 0 and Port 2, as well as P3.6 and P3.7, are
dedicated to an output function and may not be used for
general-purpose I/O. During external program fetches,
Port 2 outputs the high byte of the PC.
HOST
MSC1210
1. Whenever signal EA is LOW during reset, then all
future accesses are external; or
P0[7:0]
Cmd[2:0]
P3[7:5]
Req
P3[4]
P3[3]
P3[2]
RST
XIN
ACK
Pass
RST
CLK
Figure 21. Parallel Programming Configuration
3. Program Memory.
4. Data Memory.
The MSC1210 is shipped with Flash Memory erased (all
1s). Parallel programming methods typically involve a
third-party programmer. Serial programming methods
typically involve in-system programming. UAM allows
Flash Program and Data Memory programming. The
actual code for Flash programming cannot execute from
Flash. That code must execute from the Boot ROM,
internal (von Neumann) RAM or external memory.
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
INTERRUPTS
HARDWARE CONFIGURATION MEMORY
The MSC1210 uses a three-priority interrupt system. As
shown in Table 6, each interrupt source has an
independent priority bit, flag, interrupt vector, and enable
(except that nine interrupts share the Auxiliary Interrupt
[AI] at the highest priority). In addition, interrupts can be
globally enabled or disabled. The interrupt structure is
compatible with the original 8051 family. All of the standard
interrupts are available.
The 128 configuration bytes can only be written during the
program mode. The bytes are accessed through SFR
registers CADDR (SFR 93h) and CDATA (SFR 94h). Two
of the configuration bytes control Flash partitioning and
system control. If the security bit is set, these bits can not
be changed except with a Mass Erase command that
erases all of the Flash Memory including the 128
configuration bytes.
Table 6. Interrupt Summary
INTERRUPT
PRIORITY
CONTROL
ADDR
NUM
PRIORITY
FLAG
ENABLE
DVDD Low Voltage/HW Breakpoint
33h
6
HIGH
EDLVB (AIE.0)(1)
EBP (BPCON.0)(1)
EDLVB (AIE.0)(1)
EBP (BPCON.0)(1)
N/A
AVDD Low Voltage
33h
6
0
EALV (AIE.1)(1)
EALV (AIE.1)(1)
N/A
(AIE.2)(1)
(AIE.2)(1)
N/A
ESPIT (AIE.3)(1)
N/A
INTERRUPT/EVENT
SPI Receive
33h
6
0
ESPIR
SPI Transmit
33h
6
0
ESPIT (AIE.3)(1)
Milliseconds Timer
33h
6
0
EMSEC
(AIE.4)(1)
(AIE.5)(1)
ESPIR
EMSEC
EADC
(AIE.4)(1)
ADC
33h
6
0
EADC
Summation Register
33h
6
0
ESUM (AIE.6)(1)
ESUM (AIE.6)(1)
(AIE.7)(1)
(AIE.7)(1)
ESEC
N/A
(AIE.5)(1)
N/A
N/A
Seconds Timer
33h
6
0
ESEC
External Interrupt 0
03h
0
1
IE0 (TCON.1)(2)
EX0 (IE.0)(4)
PX0 (IP.0)
Timer 0 Overflow
0Bh
1
2
TF0 (TCON.5)(3)
ET1 (IE.1)(4)
PT0 (IP.1)
(TCON.3)(2)
(IE.2)(4)
PX1 (IP.2)
EX1
N/A
External Interrupt 1
13h
2
3
IE1
Timer 1 Overflow
0Bh
3
4
TF1 (TCON.7)(3)
ET1 (IE.3)(4)
PT1 (IP.3)
(IE.4)(4)
PS0 (IP.4)
Serial Port 0
23h
4
5
RI_0 (SCON0.0)
TI_0 (SCON0.1)
ES0
Timer 2 Overflow
2Bh
5
6
TF2 (T2CON.7)
ET2 (IE.5)(4)
PT2 (IP.5)
(IE.6)(4)
PS1 (IP.6)
Serial Port 1
3Bh
7
7
RI_1 (SCON1.0)
TI_1 (SCON1.1)
ES1
External Interrupt 2
43h
8
8
IE2 (EXIF.4)
EX2 (EIE.0)(4)
PX2 (EIP.0)
(EIE.1)(4)
PX3 (EIP.1)
External Interrupt 3
4Bh
9
9
IE3 (EXIF.5)
EX3
External Interrupt 4
53h
10
10
IE4 (EXIF.6)
EX4 (EIE.2)(4)
PX4 (EIP.2)
External Interrupt 5
5Bh
11
11
IE5 (EXIF.7)
EX5 (EIE.3)(4)
PX5 (EIP.3)
Watchdog
63h
12
12
LOW
WDTI (EICON.3)
EWDI
(EIE.4)(4)
PWDI (EIP.4)
(1) These interrupts set the AI flag (EICON.4) and are enabled by EAI (EICON.5).
(2) If edge-triggered, cleared automatically by hardware when the service routine is vectored to. If level-triggered, the flag follows the state of the
pin.
(3) Cleared automatically by hardware when interrupt vector occurs.
(4) Globally enabled by EA (IE.7).
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
Hardware Configuration Register 0 (HCR0)—Accessed Using SFR Registers CADDR and CDATA.
CADDR 7Fh
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
EPMA
PML
RSL
EBR
EWDR
DFSEL2
DFSEL1
DFSEL0
To read this register during normal operation, refer to the register descriptions for CADDR and CDATA.
EPMA
bit 7
Enable Programming Memory Access (Security Bit).
0: After reset in programming modes, Flash Memory can only be accessed in UAM until a mass erase is done.
1: Fully Accessible (default)
PML
bit 6
Program Memory Lock (PML has Priority Over RSL).
0: Enable all Flash Programming modes in program mode, can be written in UAM.
1: Enable read-only for program mode; cannot be written in UAM (default).
RSL
bit 5
Reset Sector Lock. The reset sector can be used to provide another method of Flash Memory programming. This
will allow Program Memory updates without changing the jumpers for in-circuit code updates or program
development. The code in this boot sector would then provide the monitor and programming routines with the ability
to jump into the main Flash code when programming is finished.
0: Enable Reset Sector Writing
1: Enable Read-Only Mode for Reset Sector (4kB) (default)
EBR
bit 4
Enable Boot ROM. Boot ROM is 2kB of code located in ROM, not to be confused with the 4kB Boot Sector located
in Flash Memory.
0: Disable Internal Boot ROM
1: Enable Internal Boot ROM (default)
EWDR
bit 3
Enable Watchdog Reset.
0: Disable Watchdog Reset
1: Enable Watchdog Reset (default)
DFSEL
bits 2−0
Data Flash Memory Size (see Table 3).
000: Reserved
001: 32kB, 16kB, 8kB, or 4kB Data Flash Memory
010: 16kB, 8kB, or 4kB Data Flash Memory
011: 8kB or 4kB Data Flash Memory
100: 4kB Data Flash Memory
101: 2kB Data Flash Memory
110: 1kB Data Flash Memory
111: No Data Flash Memory (default)
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
Hardware Configuration Register 1 (HCR1)
CADDR 7Eh
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
DBLSEL1
DBLSEL0
ABLSEL1
ABLSEL0
DAB
DDB
EGP0
EGP23
To read this register during normal operation, refer to the register descriptions for CADDR and CDATA.
DBLSEL
bits 7−6
Digital Brownout Level Select
00: 4.5V
01: 4.2V
10: 2.7V
11: 2.5V (default)
ABLSEL
bits 5−4
Analog Brownout Level Select
00: 4.5V
01: 4.2V
10: 2.7V
11: 2.5V (default)
DAB
bit 3
Disable Analog Power-Supply Brownout Reset
0: Enable Analog Brownout Reset
1: Disable Analog Brownout Reset (default) (will not disable unless AVDD > 2.0V)
DDB
bit 2
Disable Digital Power-Supply Brownout Reset
0: Enable Digital Brownout Reset
1: Disable Digital Brownout Reset (default)
EGP0
bit 1
Enable General-Purpose I/O for Port 0
0: Port 0 is Used for External Memory, P3.6 and P3.7 Used for WR and RD.
1: Port 0 is Used as General-Purpose I/O (default)
EGP23
bit 0
Enable General-Purpose I/O for Ports 2 and 3
0: Port 2 is Used for External Memory, P3.6 and P3.7. Used for WR and RD.
1: Port 2 and Port3 are Used as General-Purpose I/O (default)
Configuration Memory Programming
Certain key functions such as Brownout Reset and Watchdog Timer are controlled by the hardware configuration bits.
These bits are nonvolatile and can only be changed through serial and parallel programming. Other peripheral control and
status functions, such as ADC configuration, timer setup, and Flash control, are controlled through the SFRs.
34
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
SFR Definitions (Boldface definitions indicate that the register is unique to the MSC1210Yx)
ADDRESS
REGISTER
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
RESET VALUES
80h
P0
P0.7
P0.6
P0.5
P0.4
P0.3
P0.2
P0.1
P0.0
FFh
81h
SP
07h
82h
DPL0
00h
83h
DPH0
00h
84h
DPL1
00h
85h
DPH1
00h
86h
DPS
0
0
0
0
0
0
0
SEL
00h
87h
PCON
SMOD
0
1
1
GF1
GF0
STOP
IDLE
30h
88h
TCON
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
00h
89h
TMOD
−−−−−−−−−−−−−−− Timer 1 −−−−−−−−−−−−−−−
GATE
C/T
M1
M0
−−−−−−−−−−−−−−− Timer 0 −−−−−−−−−−−−−−−
GATE
C/T
M1
00h
M0
8Ah
TL0
00h
8Bh
TL1
00h
8Ch
TH0
00h
8Dh
TH1
8Eh
CKCON
0
0
T2M
T1M
T0M
MD2
MD1
MD0
8Fh
MWS
0
0
0
0
0
0
0
MXWS
00h
90h
P1
P1.7
INT5/SCK
P1.6
INT4/MISO
P1.5
INT3/MOSI
P1.4
INT2/SS
P1.3
TXD1
P1.2
RXD1
P1.1
T2EX
P1.0
T2
FFh
91h
EXIF
IE5
IE4
IE3
IE2
1
0
0
0
08h
92h
MPAGE
00h
93h
CADDR
00h
94h
CDATA
00h
95h
MCON
00h
BPSEL
0
0
RAMMAP
96h
01h
00h
00h
97h
98h
SCON0
99h
SBUF0
SM0_0
9Ah
SPICON
9Bh
SPIDATA
9Dh
SPITCON
A0h
P2
A1h
PWMCON
A2h
PWMLOW
TONELOW
PWM7
TDIV7
A3h
PWMHI
TONEHI
A5h
A6h
SM1_0
SM2_0
REN_0
TB8_0
RB8_0
TI_0
RI_0
00h
00h
SCK2
SCK1
SCK0
0
ORDER
MSTR
CPHA
CPOL
00h
00h
CLK_EN
DRV_DLY
DRV_EN
P2.5
P2.4
P2.3
P2.2
P2.1
P2.0
FFh
PPOL
PWMSEL
SPDSEL
TPCNTL2
TPCNTL1
TPCNTL0
00h
PWM6
TDIV6
PWM5
TDIV5
PWM4
TDIV4
PWM3
TDIV3
PWM2
TDIV2
PWM1
TDIV1
PWM0
TDIV0
00h
PWM15
TDIV15
PWM14
TDIV14
PWM13
TDIV13
PWM12
TDIV12
PWM11
TDIV11
PWM10
TDIV10
PWM9
TDIV9
PWM8
TDIV8
00h
PAI
0
0
0
0
PAI3
PAI2
PAI1
PAI0
00h
AIE
ESEC
ESUM
EADC
EMSEC
ESPIT
ESPIR
EALV
EDLVB
00h
A7h
AISTAT
SEC
SUM
ADC
MSEC
SPIT
SPIR
ALVD
DLVD
00h
A8h
IE
EA
ES1
ET2
ES0
ET1
EX1
ET0
EX0
00h
A9h
BPCON
BP
0
0
0
0
0
PMSEL
EBP
00h
AAh
BPL
00h
ABh
BPH
00h
ACh
P0DDRL
P03H
P03L
P02H
P02L
P01H
P01L
P00H
P00L
00h
ADh
P0DDRH
P07H
P07L
P06H
P06L
P05H
P05L
P04H
P04L
00h
P2.7
P2.6
00h
A4h
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
SFR Definitions (continued) (Boldface definitions indicate that the register is unique to the MSC1210Yx)
ADDRESS
REGISTER
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
RESET VALUES
AEh
P1DDRL
P13H
P13L
P12H
P12L
P11H
P11L
P10H
P10L
00h
AFh
P1DDRH
P17H
P17L
P16H
P16L
P15H
P15L
P14H
P14L
00h
B0h
P3
P3.7
RD
P3.6
WR
P3.5
T1
P3.4
T0
P3.3
INT1
P3.2
INT0
P3.1
TXD0
P3.0
RXD0
FFh
B1h
P2DDRL
P23H
P23L
P22H
P22L
P21H
P21L
P20H
P20L
00h
B2h
P2DDRH
P27H
P27L
P26H
P26L
P25H
P25L
P24H
P24L
00h
B3h
P3DDRL
P33H
P33L
P32H
P32L
P31H
P31L
P30H
P30L
00h
B4h
P3DDRH
P37H
P37L
P36H
P36L
P35H
P35L
P34H
P34L
00h
IP
1
PS1
PT2
PS0
PT1
PX1
PT0
PX0
80h
C0h
SCON1
SM0_1
SM1_1
SM2_1
REN_1
TB8_1
RB8_1
TI_1
RI_1
00h
C1h
SBUF1
B5h
B6h
B7h
B8h
B9h
BAh
BBh
BCh
BDh
BEh
BFh
00h
C2h
C3h
C4h
C5h
C6h
EWU
EWUWDT
EWUEX1
EWUEX0
00h
TR2
C/T2
CP/RL2
00h
C7h
C8h
T2CON
TF2
EXF2
RCLK
TCLK
EXEN2
C9h
CAh
RCAP2L
00h
CBh
RCAP2H
00h
CCh
TL2
00h
CDh
TH2
00h
CEh
CFh
D0h
PSW
D1h
OCL
D2h
OCM
D3h
OCH
D4h
GCL
D5h
GCM
D6h
GCH
MSB
D7h
ADMUX
INP3
INP2
INP1
INP0
INN3
INN2
INN1
INN0
D8h
EICON
SMOD1
1
EAI
AI
WDTI
0
0
0
40h
D9h
ADRESL
LSB
00h
DAh
ADRESM
36
CY
AC
F0
RS1
RS0
OV
F1
P
00h
LSB
00h
00h
MSB
00h
LSB
5Ah
ECh
5Fh
01h
00h
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
SFR Definitions (continued) (Boldface definitions indicate that the register is unique to the MSC1210Yx)
ADDRESS
REGISTER
BIT 7
DBh
ADRESH
MSB
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
RESET VALUES
DCh
ADCON0
—
BOD
EVREF
VREFH
EBUF
PGA2
PGA1
PGA0
30h
DDh
ADCON1
OF_UF
POL
SM1
SM0
—
CAL2
CAL1
CAL0
0000_0000b
DEh
ADCON2
DR7
DR6
DR5
DR4
DR3
DR2
DR1
DR0
1Bh
DFh
ADCON3
0
0
0
0
0
DR10
DR9
DR8
06h
E0h
ACC
E1h
SSCON
E2h
SUMR0
00h
E3h
SUMR1
00h
E4h
SUMR2
00h
E5h
SUMR3
00h
E6h
ODAC
E7h
LVDCON
ALVDIS
ALVD2
ALVD1
ALVD0
DLVDIS
DLVD2
DLVD1
DLVD0
00h
E8h
EIE
1
1
1
EWDI
EX5
EX4
EX3
EX2
E0h
E9h
HWPC0
0
0
0
0
0
0
EAh
HWPC1
0
0
0
0
0
0
EBh
HDWVER
xxh
ECh
Reserved
00h
EDh
Reserved
00h
EEh
FMCON
0
PGERA
0
FRCM
0
BUSY
1
0
02h
EFh
FTCON
FER3
FER2
FER1
FER0
FWR3
FWR2
FWR1
FWR0
A5h
F0h
B
B.7
B.6
B.5
B.4
B.3
B.2
B.1
B.0
00h
F1h
PDCON
0
0
0
PDPWM
PDADC
PDWDT
PDST
PDSPI
1Fh
F2h
PASEL
0
0
PSEN2
PSEN1
PSEN0
0
ALE1
ALE0
00h
F6h
ACLK
0
FREQ6
FREQ5
FREQ4
FREQ3
FREQ2
FREQ1
FREQ0
03h
F7h
SRST
0
0
0
0
0
0
0
RSTREQ
00h
F8h
EIP
1
1
1
PWDI
PX5
PX4
PX3
PX2
E0h
F9h
SECINT
WRT
SECINT6
SECINT5
SECINT4
SECINT3
SECINT2
SECINT1
SECINT0
7Fh
FAh
MSINT
WRT
MSINT6
MSINT5
MSINT4
MSINT3
MSINT2
MSINT1
MSINT0
7Fh
FBh
USEC
0
0
0
FREQ4
FREQ3
FREQ2
FREQ1
FREQ0
FCh
MSECL
9Fh
FDh
MSECH
0Fh
FEh
HMSEC
FFh
WDTCON
00h
00h
SSCON1
SSCON0
SCNT2
SCNT1
SCNT0
SHF2
SHF1
SHF0
00h
00h
MEMORY SIZE
0
0
0000_00xxb
00h
F3h
F4h
F5h
03h
63h
EWDT
DWDT
RWDT
WDCNT4
WDCNT3
WDCNT2
WDCNT1
WDCNT0
00h
37
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Port 0 (P0)
SFR 80h
P0.7−0
bits 7−0
7
6
5
4
3
2
1
0
Reset Value
P0.7
P0.6
P0.5
P0.4
P0.3
P0.2
P0.1
P0.0
FFh
Port 0. This port functions as a multiplexed address/data bus during external memory access, and as a generalpurpose I/O port when external memory access is not needed. During external memory cycles, this port will contain
the LSB of the address when ALE is HIGH, and Data when ALE is LOW. When used as a general-purpose I/O, this
port drive is selected by P0DDRL and P0DDRH (ACh, ADh). Whether Port 0 is used as general-purpose I/O or for
external memory access is determined by the Flash Configuration Register (HCR1.1)
Stack Pointer (SP)
SFR 81h
SP.7−0
bits 7−0
7
6
5
4
3
2
1
0
Reset Value
SP.7
SP.6
SP.5
SP.4
SP.3
SP.2
SP.1
SP.0
07h
Stack Pointer. The stack pointer identifies the location where the stack will begin. The stack pointer is incremented
before every PUSH or CALL operation and decremented after each POP or RET/RETI. This register defaults to 07h
after reset.
Data Pointer Low 0 (DPL0)
SFR 82h
DPL0.7−0
bits 7−0
7
6
5
4
3
2
1
0
Reset Value
DPL0.7
DPL0.6
DPL0.5
DPL0.4
DPL0.3
DPL0.2
DPL0.1
DPL0.0
00h
Data Pointer Low 0. This register is the low byte of the standard 8051 16-bit data pointer. DPL0 and DPH0 are
used to point to non-scratchpad data RAM. The current data pointer is selected by DPS (SFR 86h).
Data Pointer High 0 (DPH0)
SFR 83h
DPH0.7−0
bits 7−0
7
6
5
4
3
2
1
0
Reset Value
DPH0.7
DPH0.6
DPH0.5
DPH0.4
DPH0.3
DPH0.2
DPH0.1
DPH0.0
00h
Data Pointer High 0. This register is the high byte of the standard 8051 16-bit data pointer. DPL0 and DPH0 are
used to point to non-scratchpad data RAM. The current data pointer is selected by DPS (SFR 86h).
Data Pointer Low 1 (DPL1)
SFR 84h
DPL1.7−0
bits 7−0
38
7
6
5
4
3
2
1
0
Reset Value
DPL1.7
DPL1.6
DPL1.5
DPL1.4
DPL1.3
DPL1.2
DPL1.1
DPL1.0
00h
Data Pointer Low 1. This register is the low byte of the auxiliary 16-bit data pointer. When the SEL bit (DPS.0,
SFR 86h) is set, DPL1 and DPH1 are used in place of DPL0 and DPH0 during DPTR operations.
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Data Pointer High 1 (DPH1)
SFR 85h
DPH1.7−0
bits 7−0
7
6
5
4
3
2
1
0
Reset Value
DPH1.7
DPH1.6
DPH1.5
DPH1.4
DPH1.3
DPH1.2
DPH1.1
DPH1.0
00h
Data Pointer High. This register is the high byte of the auxiliary 16-bit data pointer. When the SEL bit (DPS.0,
SFR 86h) is set, DPL1 and DPH1 are used in place of DPL0 and DPH0 during DPTR operations.
Data Pointer Select (DPS)
SFR 86h
SEL
bit 0
7
6
5
4
3
2
1
0
Reset Value
0
0
0
0
0
0
0
SEL
00h
Data Pointer Select. This bit selects the active data pointer.
0: Instructions that use the DPTR will use DPL0 and DPH0.
1: Instructions that use the DPTR will use DPL1 and DPH1.
Power Control (PCON)
SFR 87h
7
6
5
4
3
2
1
0
Reset Value
SMOD
0
1
1
GF1
GF0
STOP
IDLE
30h
SMOD
bit 7
Serial Port 0 Baud Rate Doubler Enable. The serial baud rate doubling function for Serial Port 0.
0: Serial Port 0 baud rate will be a standard baud rate.
1: Serial Port 0 baud rate will be double that defined by baud rate generation equation when using Timer 1.
GF1
bit 3
General-Purpose User Flag 1. This is a general-purpose flag for software control.
GF0
bit 2
General-Purpose User Flag 0. This is a general-purpose flag for software control.
STOP
bit 1
Stop Mode Select. Setting this bit will halt the oscillator and block external clocks. This bit will always read as a 0.
Exit with RESET.
IDLE
bit 0
Idle Mode Select. Setting this bit will freeze the CPU, Timer 0, 1, and 2, and the USARTs; other peripherals remain
active. This bit will always be read as a 0. Exit with AI (A6h) and EWU (C6h) interrupts.
39
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Timer/Counter Control (TCON)
SFR 88h
7
6
5
4
3
2
1
0
Reset Value
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
00h
TF1
bit 7
Timer 1 Overflow Flag. This bit indicates when Timer 1 overflows its maximum count as defined by the current mode.
This bit can be cleared by software and is automatically cleared when the CPU vectors to the Timer 1 interrupt service
routine.
0: No Timer 1 overflow has been detected.
1: Timer 1 has overflowed its maximum count.
TR1
bit 6
Timer 1 Run Control. This bit enables/disables the operation of Timer 1. Halting this timer will preserve the current count
in TH1, TL1.
0: Timer is halted.
1: Timer is enabled.
TF0
bit 5
Timer 0 Overflow Flag. This bit indicates when Timer 0 overflows its maximum count as defined by the current mode.
This bit can be cleared by software and is automatically cleared when the CPU vectors to the Timer 0 interrupt service
routine.
0: No Timer 0 overflow has been detected.
1: Timer 0 has overflowed its maximum count.
TR0
bit 4
Timer 0 Run Control. This bit enables/disables the operation of Timer 0. Halting this timer will preserve the current
count in TH0, TL0.
0: Timer is halted.
1: Timer is enabled.
IE1
bit 3
Interrupt 1 Edge Detect. This bit is set when an edge/level of the type defined by IT1 is detected. If IT1 = 1, this bit
will remain set until cleared in software or the start of the External Interrupt 1 service routine. If IT1 = 0, this bit will
inversely reflect the state of the INT1 pin.
IT1
bit 2
Interrupt 1 Type Select. This bit selects whether the INT1 pin will detect edge or level triggered interrupts.
0: INT1 is level triggered.
1: INT1 is edge triggered.
IE0
bit 3
Interrupt 0 Edge Detect. This bit is set when an edge/level of the type defined by IT0 is detected. If IT0 = 1, this bit
will remain set until cleared in software or the start of the External Interrupt 0 service routine. If IT0 = 0, this bit will
inversely reflect the state of the INT0 pin.
IT0
bit 2
Interrupt 0 Type Select. This bit selects whether the INT0 pin will detect edge or level triggered interrupts.
0: INT0 is level triggered.
1: INT0 is edge triggered.
40
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Timer Mode Control (TMOD)
7
6
5
4
3
2
TIMER 1
SFR 89h
GATE
C/T
1
0
M1
M0
Reset Value
00h
TIMER 0
M1
M0
GATE
C/T
GATE
bit 7
Timer 1 Gate Control. This bit enables/disables the ability of Timer 1 to increment.
0: Timer 1 will clock when TR1 = 1, regardless of the state of pin INT1.
1: Timer 1 will clock only when TR1 = 1 and pin INT1 = 1.
C/T
bit 6
Timer 1 Counter/Timer Select.
0: Timer is incremented by internal clocks.
1: Timer is incremented by pulses on T1 pin when TR1 (TCON.6, SFR 88h) is 1.
M1, M0
bits 5−4
Timer 1 Mode Select. These bits select the operating mode of Timer 1.
M1
M0
0
0
MODE
Mode 0: 8-bit counter with 5-bit prescale.
0
1
Mode 1: 16 bits.
1
0
Mode 2: 8-bit counter with auto reload.
1
1
Mode 3: Timer 1 is halted, but holds its count.
GATE
bit 3
Timer 0 Gate Control. This bit enables/disables the ability of Timer 0 to increment.
0: Timer 0 will clock when TR0 = 1, regardless of the state of pin INT0 (software control).
1: Timer 0 will clock only when TR0 = 1 and pin INT0 = 1 (hardware control).
C/T
bit 2
Timer 0 Counter/Timer Select.
0: Timer is incremented by internal clocks.
1: Timer is incremented by pulses on pin T0 when TR0 (TCON.4, SFR 88h) is 1.
M1, M0
bits 1−0
Timer 0 Mode Select. These bits select the operating mode of Timer 0.
M1
M0
MODE
0
0
Mode 0: 8-bit counter with 5-bit prescale.
0
1
Mode 1: 16 bits.
1
0
Mode 2: 8-bit counter with auto reload.
1
1
Mode 3: Two 8-bit counters.
Timer 0 LSB (TL0)
SFR 8Ah
TL0.7−0
bits 7−0
7
6
5
4
3
2
1
0
Reset Value
TL0.7
TL0.6
TL0.5
TL0.4
TL0.3
TL0.2
TL0.1
TL0.0
00h
Timer 0 LSB. This register contains the least significant byte of Timer 0.
Timer 1 LSB (TL1)
SFR 8Bh
TL1.7−0
bits 7−0
7
6
5
4
3
2
1
0
Reset Value
TL1.7
TL1.6
TL1.5
TL1.4
TL1.3
TL1.2
TL1.1
TL1.0
00h
Timer 1 LSB. This register contains the least significant byte of Timer 1.
41
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Timer 0 MSB (TH0)
SFR 8Ch
TH0.7−0
bits 7−0
7
6
5
4
3
2
1
0
Reset Value
TH0.7
TH0.6
TH0.5
TH0.4
TH0.3
TH0.2
TH0.1
TH0.0
00h
Timer 0 MSB. This register contains the most significant byte of Timer 0.
Timer 1 MSB (TH1)
SFR 8Dh
TH1.7−0
bits 7−0
7
6
5
4
3
2
1
0
Reset Value
TH1.7
TH1.6
TH1.5
TH1.4
TH1.3
TH1.2
TH1.1
TH1.0
00h
Timer 1 MSB. This register contains the most significant byte of Timer 1.
Clock Control (CKCON)
SFR 8Eh
7
6
5
4
3
2
1
0
Reset Value
0
0
T2M
T1M
T0M
MD2
MD1
MD0
01h
T2M
bit 5
Timer 2 Clock Select. This bit controls the division of the system clock that drives Timer 2. This bit has no effect when
the timer is in baud rate generator or clock output mode. Clearing this bit to 0 maintains 8051 compatibility. This bit
has no effect on instruction cycle timing.
0: Timer 2 uses a divide-by-12 of the crystal frequency.
1: Timer 2 uses a divide-by-4 of the crystal frequency.
T1M
bit 4
Timer 1 Clock Select. This bit controls the division of the system clock that drives Timer 1. Clearing this bit to 0
maintains 8051 compatibility. This bit has no effect on instruction cycle timing.
0: Timer 1 uses a divide-by-12 of the crystal frequency.
1: Timer 1 uses a divide-by-4 of the crystal frequency.
T0M
bit 3
Timer 0 Clock Select. This bit controls the division of the system clock that drives Timer 0. Clearing this bit to 0
maintains 8051 compatibility. This bit has no effect on instruction cycle timing.
0: Timer 0 uses a divide-by-12 of the crystal frequency.
1: Timer 0 uses a divide-by-4 of the crystal frequency.
MD2, MD1, MD0
bits 2−0
42
Stretch MOVX Select 2−0. These bits select the time by which external MOVX cycles are to be stretched. This
allows slower memory or peripherals to be accessed without using ports or manual software intervention. The
width of the RD or WR strobe will be stretched by the specified interval, which will be transparent to the software
except for the increased time to execute the MOVX instruction. All internal MOVX instructions on devices
containing MOVX SRAM are performed at the 2 instruction cycle rate.
MD2
MD1
MD0
STRETCH
VALUE
MOVX DURATION
RD or WR STROBE WIDTH
(SYS CLKs)
RD or WR STROBE WIDTH
(ms) at 12MHz
0
0
0
0
0
1
0
2 Instruction Cycles
2
0.167
1
3 Instruction Cycles (default)
4
0
1
0.333
0
2
4 Instruction Cycles
8
0
0.667
1
1
3
5 Instruction Cycles
12
1.000
1
0
0
4
6 Instruction Cycles
16
1.333
1
0
1
5
7 Instruction Cycles
20
1.667
1
1
0
6
8 Instruction Cycles
24
2.000
1
1
1
7
9 Instruction Cycles
28
2.333
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Memory Write Select (MWS)
SFR 8Fh
MXWS
bit 0
7
6
5
4
3
2
1
0
Reset Value
0
0
0
0
0
0
0
MXWS
00h
MOVX Write Select. This allows writing to the internal Flash program memory.
0: No writes are allowed to the internal Flash program memory.
1: Writing is allowed to the internal Flash program memory, unless PML (HCR0) or RSL (HCR0) are on.
Port 1 (P1)
SFR 90h
7
6
5
4
3
2
1
0
Reset Value
P1.7
INT5/SCK
P1.6
INT4/MISO
P1.5
INT3/MOSI
P1.4
INT2/SS
P1.3
TXD1
P1.2
RXD1
P1.1
T2EX
P1.0
T2
FFh
P1.7−0
bits 7−0
General-Purpose I/O Port 1. This register functions as a general-purpose I/O port. In addition, all the pins have an
alternative function listed below. Each of the functions is controlled by several other SFRs. The associated Port 1
latch bit must contain a logic ‘1’ before the pin can be used in its alternate function capacity. To use the alternate
function, set the appropriate mode in P1DDRL (SFR AEh), P1DDRH (SFR AFh).
INT5/SCK
bit 7
External Interrupt 5. A falling edge on this pin will cause an external interrupt 5 if enabled.
SPI Clock. The master clock for SPI data transfers.
INT4/MISO External Interrupt 4. A rising edge on this pin will cause an external interrupt 4 if enabled.
bit 6
Master In Slave Out. For SPI data transfers, this pin receives data for the master and transmits data from the slave.
INT3/MOSI External Interrupt 3. A falling edge on this pin will cause an external interrupt 3 if enabled.
bit 5
Master Out Slave In. For SPI data transfers, this pin transmits master data and receives slave data.
INT2/SS
bit 4
External Interrupt 2. A rising edge on this pin will cause an external interrupt 2 if enabled.
Slave Select. During SPI operation, this pin provides the select signal for the slave device but does not control the
output drive of MISO.
TXD1
bit 3
Serial Port 1 Transmit. This pin transmits the serial Port 1 data in serial port modes 1, 2, 3, and emits the synchronizing clock in serial port mode 0.
RXD1
bit 2
Serial Port 1 Receive. This pin receives the serial Port 1 data in serial port modes 1, 2, 3, and is a bidirectional data
transfer pin in serial port mode 0.
T2EX
bit 1
Timer 2 Capture/Reload Trigger. A 1 to 0 transition on this pin will cause the value in the T2 registers to be
transferred into the capture registers, if enabled by EXEN2 (T2CON.3, SFR C8h). When in auto-reload mode, a 1
to 0 transition on this pin will reload the Timer 2 registers with the value in RCAP2L and RCAP2H if enabled by EXEN2
(T2CON.3, SFR C8h).
T2
bit 0
Timer 2 External Input. A 1 to 0 transition on this pin will cause Timer 2 to increment.
43
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External Interrupt Flag (EXIF)
SFR 91h
7
6
5
4
3
2
1
0
Reset Value
IE5
IE4
IE3
IE2
1
0
0
0
08h
IE5
bit 7
External Interrupt 5 Flag. This bit will be set when a falling edge is detected on INT5. This bit must be cleared
manually by software. Setting this bit in software will cause an interrupt if enabled.
IE4
bit 6
External Interrupt 4 Flag. This bit will be set when a rising edge is detected on INT4. This bit must be cleared
manually by software. Setting this bit in software will cause an interrupt if enabled.
IE3
bit 5
External Interrupt 3 Flag. This bit will be set when a falling edge is detected on INT3. This bit must be cleared
manually by software. Setting this bit in software will cause an interrupt if enabled.
IE2
bit 4
External Interrupt 2 Flag. This bit will be set when a rising edge is detected on INT2. This bit must be cleared
manually by software. Setting this bit in software will cause an interrupt if enabled.
Memory Page (MPAGE)
7
6
5
4
3
2
1
0
SFR 92h
MPAGE
bits 7−0
Reset Value
00h
The 8051 uses Port 2 for the upper 8 bits of the external data memory access by MOVX A,@Ri and MOVX @Ri,A
instructions. The MSC1210 uses register MPAGE instead of Port 2. To access external data memory using the MOVX
A,@Ri and MOVX @Ri,A instructions, the user should preload the upper byte of the address into MPAGE (versus
preloading into P2 for the standard 8051).
Configuration Address Register (CADDR) (write-only)
7
6
5
4
3
2
1
0
SFR 93h
CADDR
bits 7−0
Reset Value
00h
Configuration Address Register. This register supplies the address for reading bytes in the 128 bytes of Flash
Configuration memory. This is a write-only register.
CAUTION:
If this register is written to while executing from Flash Memory, the CDATA register will be incorrect.
The faddr_data_read routine in the Boot ROM can be used for this purpose.
Configuration Data Register (CDATA) (read-only)
7
SFR 94h
CDATA
bits 7−0
44
6
5
4
3
2
1
0
Reset Value
00h
Configuration Data Register. This register will contain the data in the 128 bytes of Flash Configuration memory that
are located at the last written address in the CADDR register. This is a read-only register.
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Memory Control (MCON)
SFR 95h
7
6
5
4
3
2
1
0
Reset Value
BPSEL
0
0
—
—
—
—
RAMMAP
00h
BPSEL
bit 7
Breakpoint Address Selection
Write: Select one of two Breakpoint registers: 0 or 1.
0: Select breakpoint register 0.
1: Select breakpoint register 1.
Read: Provides the Breakpoint register that created the last interrupt: 0 or 1.
RAMMAP
bit 0
Memory Map 1kB extended SRAM.
0: Address is: 0000h—03FFh (default) (Data Memory)
1: Address is 8400h—87FFh (Data and Program Memory)
Serial Port 0 Control (SCON0)
SFR 98h
SM0−2
bits 7−5
7
6
5
4
3
2
1
0
Reset Value
SM0_0
SM1_0
SM2_0
REN_0
TB8_0
RB8_0
TI_0
RI_0
00h
Serial Port 0 Mode. These bits control the mode of serial Port 0. Modes 1, 2, and 3 have 1 start and 1 stop bit in
addition to the 8 or 9 data bits.
MODE
SM0
SM1
SM2
0
0
0
0
0
0
0
1
Synchronous
Synchronous
8 bits
8 bits
12 pCLK(1)
4 pCLK(1)
1(2)
1(2)
0
0
1
1
0
1
Asynchronous
Valid Stop Required(3)
10 bits
10 bits
Timer 1 or 2 Baud Rate Equation
Timer 1 Baud Rate Equation
2
1
0
0
Asynchronous
11 bits
2
1
0
1
Asynchronous with Multiprocessor Communication(4)
11 bits
64 pCLK(1) (SMOD = 0)
32 pCLK(1) (SMOD = 1)
64 pCLK(1) (SMOD = 0)
32 pCLK(1) (SMOD = 1)
3(2)
3(2)
1
1
1
1
0
1
Asynchronous
Asynchronous with Multiprocessor Communication(4)
11 bits
11 bits
(1)
(2)
(3)
(4)
FUNCTION
LENGTH
PERIOD
Timer 1 or 2 Baud Rate Equation
Timer 1 or 2 Baud Rate Equation
pCLK will be equal to tCLK, except that pCLK will stop for IDLE.
For modes 1 and 3, the selection of Timer 1 or 2 for baud rate is specified via the T2CON (C8h) register.
RI_0 will only be activated when a valid STOP is received.
RI_0 will not be activated if bit 9 = 0.
REN_0
bit 4
Receive Enable. This bit enables/disables the serial Port 0 received shift register.
0: Serial Port 0 reception disabled.
1: Serial Port 0 received enabled (modes 1, 2, and 3). Initiate synchronous reception (mode 0).
TB8_0
bit 3
9th Transmission Bit State. This bit defines the state of the 9th transmission bit in serial Port 0 modes 2 and 3.
RB8_0
bit 2
9th Received Bit State. This bit identifies the state of the 9th reception bit of received data in serial Port 0 modes
2 and 3. In serial port mode 1, when SM2_0 = 0, RB8_0 is the state of the stop bit. RB8_0 is not used in mode 0.
TI_0
bit 1
Transmitter Interrupt Flag. This bit indicates that data in the serial Port 0 buffer has been completely shifted out. In serial
port mode 0, TI_0 is set at the end of the 8th data bit. In all other modes, this bit is set at the end of the last data bit.
This bit must be manually cleared by software.
RI_0
bit 0
Receiver Interrupt Flag. This bit indicates that a byte of data has been received in the serial Port 0 buffer. In serial
port mode 0, RI_0 is set at the end of the 8th bit. In serial port mode 1, RI_0 is set after the last sample of the incoming
stop bit subject to the state of SM2_0. In modes 2 and 3, RI_0 is set after the last sample of RB8_0. This bit must
be manually cleared by software.
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Serial Data Buffer 0 (SBUF0)
7
6
5
4
3
2
1
0
SFR 99h
SBUF0
bits 7−0
Reset Value
00h
Serial Data Buffer 0. Data for Serial Port 0 is read from or written to this location. The serial transmit and receive
buffers are separate registers, but both are addressed at this location.
SPI Control (SPICON). Any change resets the SPI interface, counters, and pointers. PDCON controls which
is enabled.
SFR 9Ah
SCK
bits 7−5
7
6
5
4
3
2
1
0
Reset Value
SCK2
SCK1
SCK0
0
ORDER
MSTR
CPHA
CPOL
00h
0
Reset Value
SCK Selection. Selection of tCLK divider for generation of SCK in Master mode.
SCK2
SCK1
SCK0
SCK PERIOD
0
0
0
0
0
1
tCLK/2
tCLK/4
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
tCLK/8
tCLK/16
tCLK/32
tCLK/64
tCLK/128
tCLK/256
ORDER
bit 3
Set Bit Order for Transmit and Receive.
0: Most Significant Bits First
1: Least Significant Bits First
MSTR
bit 2
SPI Master Mode.
0: Slave Mode
1: Master Mode
CPHA
bit 1
Serial Clock Phase Control.
0: Valid data starting from half SCK period before the first edge of SCK
1: Valid data starting from the first edge of SCK
CPOL
bit 0
Serial Clock Polarity.
0: SCK idle at logic LOW
1: SCK idle at logic HIGH
SPI Data Register (SPIDATA)
7
SFR 9Bh
SPIDATA
bits 7−0
46
6
5
4
3
2
1
00h
SPI Data Register. Data for SPI is read from or written to this location. The SPI transmit and receive buffers are
separate registers, but both are addressed at this location. Read to clear the receive interrupt and write to clear the
transmit interrupt.
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SPI Transmit Control Register (SPITCON)
7
6
SFR 9Dh
5
4
3
CLK_EN
DRV_DLY
DRV_EN
CLK_EN
bit 5
SCK Driver Enable.
0: Disable SCK Driver (Master Mode)
1: Enable SCK Driver (Master Mode)
DRV_DLY
bit 4
Drive Delay. (Refer to DRV_EN bit)
0: Drive output immediately
1: Drive output after current byte transfer
DRV_EN
bit 3
Drive Enable.
DRV_DLY
DRV_EN
0
0
Tristate immediately
0
1
Drive immediately
1
0
Tristate after the current byte transfer
1
1
Drive after the current byte transfer
2
1
0
Reset Value
00h
MOSI or MISO OUTPUT CONTROL
Port 2 (P2)
7
6
5
4
3
2
1
0
SFR A0h
P2
bits 7−0
Reset Value
FFh
Port 2. This port functions as an address bus during external memory access, and as a general-purpose I/O port.
During external memory cycles, this port will contain the MSB of the address. Whether Port 2 is used as
general-purpose I/O or for external memory access is determined by the Flash Configuration Register (HCR1.0).
PWM Control (PWMCON)
SFR A1h
7
6
5
4
3
2
1
0
Reset Value
—
—
PPOL
PWMSEL
SPDSEL
TPCNTL2
TPCNTL1
TPCNTL0
00h
PPOL
bit 5
Period Polarity. Specifies the starting level of the PWM pulse.
0: ON Period. PWM Duty register programs the ON period.
1: OFF Period. PWM Duty register programs the OFF period.
PWMSEL
bit 4
PWM Register Select. Select which 16-bit register is accessed by PWMLOW/PWMHIGH.
0: Period (must be 0 for TONE mode)
1: Duty
SPDSEL
bit 3
Speed Select.
0: 1MHz (the USEC Clock)
1: SYSCLK
TPCNTL
bits 2−0
Tone Generator/Pulse Width Modulation Control.
TPCNTL.2
TPCNTL.1
TPCNTL.0
MODE
0
0
0
Disable (default)
0
0
1
PWM
0
1
1
TONE—Square
1
1
1
TONE—Staircase
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Tone Low (TONELOW)/PWM Low (PWMLOW)
SFR A2h
7
6
5
4
3
2
1
0
Reset Value
TDIV7
PWM7
TDIV6
PWM6
TDIV5
PWM5
TDIV4
PWM4
TDIV3
PWM3
TDIV2
PWM2
TDIV1
PWM1
TDIV0
PWM0
00h
TDIV7−0
bits 7−0
Tone Divisor. The low order bits that define the half-time period. For staircase mode the output is high impedance
for the last 1/4 of this period.
PWMLOW
bits 7−0
Pulse Width Modulator Low Bits. These 8 bits are the least significant 8 bits of the PWM register.
Tone High (TONEHI)/PWM High (PWMHI)
SFR A3h
7
6
5
4
3
2
1
0
Reset Value
TDIV15
PWM15
TDIV14
PWM14
TDIV13
PWM13
TDIV12
PWM12
TDIV11
PWM11
TDIV10
PWM10
TDIV9
PWM9
TDIV8
PWM8
00h
TDIV15−8
bits 7−0
Tone Divisor. The high order bits that define the half time period. For staircase mode the output is high impedance
for the last 1/4 of this period.
PWMHI
bits 7−0
Pulse Width Modulator High Bits. These 8 bits are the high order bits of the PWM register.
Pending Auxiliary Interrupt (PAI)
SFR A5h
PAI
bits 3−0
48
7
6
5
4
3
2
1
0
Reset Value
—
—
—
—
PAI3
PAI2
PAI1
PAI0
00h
Pending Auxiliary Interrupt Register. The results of this register can be used as an index to vector to the
appropriate interrupt routine. All of these interrupts vector through address 0033h.
PAI3
PAI2
PAI1
PAI0
AUXILIARY INTERRUPT STATUS
0
0
0
0
No Pending Auxiliary IRQ
0
0
0
1
Digital Low Voltage IRQ Pending
0
0
1
0
Analog Low Voltage IRQ Pending
0
0
1
1
SPI Receive IRQ Pending.
0
1
0
0
SPI Transmit IRQ Pending.
0
1
0
1
One Millisecond System Timer IRQ Pending.
0
1
1
0
Analog-to-Digital Conversion IRQ Pending.
0
1
1
1
Accumulator IRQ Pending.
1
0
0
0
One Second System Timer IRQ Pending.
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Auxiliary Interrupt Enable (AIE)
SFR A6h
7
6
5
4
3
2
1
0
Reset Value
ESEC
ESUM
EADC
EMSEC
ESPIT
ESPIR
EALV
EDLVB
00h
Interrupts are enabled by EICON.4 (SFR D8H). The other interrupts are controlled by the IE and EIE registers.
ESEC
bit 7
Enable Seconds Timer Interrupt (lowest priority auxiliary interrupt).
Write: Set mask bit for this interrupt 0 = masked, 1 = enabled.
Read: Current value of Seconds Timer Interrupt before masking.
ESUM
bit 6
Enable Summation Interrupt.
Write: Set mask bit for this interrupt 0 = masked, 1 = enabled.
Read: Current value of Summation Interrupt before masking.
EADC
bit 5
Enable ADC Interrupt.
Write: Set mask bit for this interrupt 0 = masked, 1 = enabled.
Read: Current value of ADC Interrupt before masking.
EMSEC
bit 4
Enable Millisecond System Timer Interrupt.
Write: Set mask bit for this interrupt 0 = masked, 1 = enabled.
Read: Current value of Millisecond System Timer Interrupt before masking.
ESPIT
bit 3
Enable SPI Transmit Interrupt.
Write: Set mask bit for this interrupt 0 = masked, 1 = enabled.
Read: Current value of SPI Transmit Interrupt before masking.
ESPIR
bit 2
Enable SPI Receive Interrupt.
Write: Set mask bit for this interrupt 0 = masked, 1 = enabled.
Read: Current value of SPI Receive Interrupt before masking.
EALV
bit 1
Enable Analog Low Voltage Interrupt.
Write: Set mask bit for this interrupt 0 = masked, 1 = enabled.
Read: Current value of Analog Low Voltage Interrupt before masking.
EDLVB
bit 0
Enable Digital Low Voltage or Breakpoint Interrupt (highest priority auxiliary interrupt).
Write: Set mask bit for this interrupt 0 = masked, 1 = enabled.
Read: Current value of Digital Low Voltage or Breakpoint Interrupt before masking.
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Auxiliary Interrupt Status Register (AISTAT)
SFR A7h
7
6
5
4
3
2
1
0
Reset Value
SEC
SUM
ADC
MSEC
SPIT
SPIR
ALVD
DLVD
00h
SEC
bit 7
Second System Timer Interrupt Status Flag (lowest priority AI).
0: SEC interrupt inactive or masked.
1: SEC Interrupt active. (It is set inactive by reading the SECINT register.)
SUM
bit 6
Summation Register Interrupt Status Flag.
0: SUM interrupt inactive or masked.
1: SUM interrupt active. (It is set inactive by reading the lowest byte of the Summation register.)
ADC
bit 5
ADC Interrupt Status Flag.
0: ADC interrupt inactive or masked (If active, it is set inactive by reading the lowest byte of the Data Output Register).
1: ADC interrupt active. (If active, no new data will be written to the Data Output Register.)
MSEC
bit 4
Millisecond System Timer Interrupt Status Flag.
0: MSEC interrupt inactive or masked.
1: MSEC interrupt active. (It is set inactive by reading the MSINT register.)
SPIT
bit 3
SPI Transmit Interrupt Status Flag.
0: SPI transmit interrupt inactive or masked.
1: SPI transmit interrupt active. (It is set inactive by writing to the SPIDATA register.)
SPIR
bit 2
SPI Receive Interrupt Status Flag.
0: SPI receive interrupt inactive or masked.
1: SPI receive interrupt active. (It is set inactive by reading from the SPIDATA register.)
ALVD
bit 1
Analog Low Voltage Detect Interrupt Status Flag.
0: ALVD interrupt inactive or masked.
1: ALVD interrupt active. (Interrupt stays active until the AVDD voltage exceeds the threshold.)
DLVD
bit 0
Digital Low Voltage Detect or Breakpoint Interrupt Status Flag (highest priority AI).
0: DLVD interrupt inactive or masked.
1: DLVD interrupt active. (Interrupt stays active until the DVDD voltage exceeds the threshold or the Breakpoint is
cleared.)
50
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Interrupt Enable (IE)
SFR A8h
7
6
5
4
3
2
1
0
Reset Value
EA
ES1
ET2
ES0
ET1
EX1
ET0
EX0
00h
EA
bit 7
Global Interrupt Enable. This bit controls the global masking of all interrupts except those in AIE (SFR A6h).
0: Disable interrupt sources. This bit overrides individual interrupt mask settings for this register.
1: Enable all individual interrupt masks. Individual interrupts in this register will occur if enabled.
ES1
bit 6
Enable Serial Port 1 Interrupt. This bit controls the masking of the serial Port 1 interrupt.
0: Disable all serial Port 1 interrupts.
1: Enable interrupt requests generated by the RI_1 (SCON1.0, SFR C0h) or TI_1 (SCON1.1, SFR C0h) flags.
ET2
bit 5
Enable Timer 2 Interrupt. This bit controls the masking of the Timer 2 interrupt.
0: Disable all Timer 2 interrupts.
1: Enable interrupt requests generated by the TF2 flag (T2CON.7, SFR C8h).
ES0
bit 4
Enable Serial port 0 interrupt. This bit controls the masking of the serial Port 0 interrupt.
0: Disable all serial Port 0 interrupts.
1: Enable interrupt requests generated by the RI_0 (SCON0.0, SFR 98h) or TI_0 (SCON0.1, SFR 98h) flags.
ET1
bit 3
Enable Timer 1 Interrupt. This bit controls the masking of the Timer 1 interrupt.
0: Disable Timer 1 interrupt.
1: Enable interrupt requests generated by the TF1 flag (TCON.7, SFR 88h).
EX1
bit 2
Enable External Interrupt 1. This bit controls the masking of external interrupt 1.
0: Disable external interrupt 1.
1: Enable interrupt requests generated by the INT1 pin.
ET0
bit 1
Enable Timer 0 Interrupt. This bit controls the masking of the Timer 0 interrupt.
0: Disable all Timer 0 interrupts.
1: Enable interrupt requests generated by the TF0 flag (TCON.5, SFR 88h).
EX0
bit 0
Enable External Interrupt 0. This bit controls the masking of external interrupt 0.
0: Disable external interrupt 0.
1: Enable interrupt requests generated by the INT0 pin.
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Breakpoint Control (BPCON)
SFR A9h
7
6
5
4
3
2
1
0
Reset Value
BP
0
0
0
0
0
PMSEL
EBP
00h
Writing to register sets the breakpoint condition specified by MCON, BPL, and BPH.
BP
bit 7
Breakpoint Interrupt. This bit indicates that a break condition has been recognized by a hardware breakpoint register(s).
Read: Status of Breakpoint Interrupt. Will indicate a breakpoint match for any of the breakpoint registers.
Write: 0: No effect.
1: Clear Breakpoint 1 for breakpoint register selected by MCON (SFR 95h).
PMSEL
bit 1
Program Memory Select. Write this bit to select memory for address breakpoints of register selected in
MCON (SFR 95h).
0: Break on address in data memory.
1: Break on address in program memory.
EBP
bit 0
Enable Breakpoint. This bit enables this breakpoint register. Address of breakpoint register selected by
MCON (SFR 95h).
0: Breakpoint disabled.
1: Breakpoint enabled.
Breakpoint Low (BPL) Address for BP Register Selected in MCON (95h)
SFR AAh
BPL.7−0
bits 7−0
7
6
5
4
3
2
1
0
Reset Value
BPL.7
BPL.6
BPL.5
BPL.4
BPL.3
BPL.2
BPL.1
BPL.0
00h
Breakpoint Low Address. The low 8 bits of the 16-bit breakpoint address.
Breakpoint High Address (BPH) Address for BP Register Selected in MCON (95h)
SFR ABh
BPH.7−0
bits 7−0
52
7
6
5
4
3
2
1
0
Reset Value
BPH.7
BPH.6
BPH.5
BPH.4
BPH.3
BPH.2
BPH.1
BPH.0
00h
Breakpoint High Address. The high 8 bits of the 16-bit breakpoint address.
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Port 0 Data Direction Low Register (P0DDRL)
SFR ACh
P0.3
bits 7−6
P0.2
bits 5−4
P0.1
bits 3−2
P0.0
bits 1−0
7
6
5
4
3
2
1
0
Reset Value
P03H
P03L
P02H
P02L
P01H
P01L
P00H
P00L
00h
Port 0 Bit 3 Control.
P03H
P03L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 0 Bit 2 Control.
P02H
P02L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 0 Bit 1 Control.
P01H
P01L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 0 Bit 0 Control.
P00H
P00L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
NOTE: Port 0 also controlled by EA and Memory Access Control HCR1.1.
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Port 0 Data Direction High Register (P0DDRH)
SFR ADh
P0.7
bits 7−6
P0.6
bits 5−4
P0.5
bits 3−2
P0.4
bits 1−0
7
6
5
4
3
2
1
0
Reset Value
P07H
P07L
P06H
P06L
P05H
P05L
P04H
P04L
00h
Port 0 Bit 7 Control.
P07H
P07L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 0 Bit 6 Control.
P06H
P06L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 0 Bit 5 Control.
P05H
P05L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 0 Bit 4 Control.
P04H
P04L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
NOTE: Port 0 also controlled by EA and Memory Access Control HCR1.1.
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Port 1 Data Direction Low Register (P1DDRL)
SFR AEh
P1.3
bits 7−6
P1.2
bits 5−4
P1.1
bits 3−2
P1.0
bits 1−0
7
6
5
4
3
2
1
0
Reset Value
P13H
P13L
P12H
P12L
P11H
P11L
P10H
P10L
00h
Port 1 Bit 3 Control.
P13H
P13L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 1 Bit 2 Control.
P12H
P12L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 1 Bit 1 Control.
P11H
P11L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 1 Bit 0 Control.
P10H
P10L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
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Port 1 Data Direction High Register (P1DDRH)
SFR AFh
P1.7
bits 7−6
P1.6
bits 5−4
P1.5
bits 3−2
P1.4
bits 1−0
56
7
6
5
4
3
2
1
0
Reset Value
P17H
P17L
P16H
P16L
P15H
P15L
P14H
P14L
00h
Port 1 Bit 7 Control.
P17H
P17L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 1 Bit 6 Control.
P16H
P16L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 1 Bit 5 Control.
P15H
P15L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 1 Bit 4 Control.
P14H
P14L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
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Port 3 (P3)
SFR B0h
7
6
5
4
3
2
1
0
Reset Value
P3.7
RD
P3.6
WR
P3.5
T1
P3.4
T0
P3.3
INT1
P3.2
INT0
P3.1
TXD0
P3.0
RXD0
FFh
P3.7−0
bits 7−0
General-Purpose I/O Port 3. This register functions as a general-purpose I/O port. In addition, all the pins have an
alternative function listed below. Each of the functions is controlled by several other SFRs. The associated Port 3
latch bit must contain a logic ‘1’ before the pin can be used in its alternate function capacity.
RD
bit 7
External Data Memory Read Strobe. This pin provides an active low read strobe to an external memory device.
If Port 0 or Port 2 is selected for external memory in the HCR1 register, this function will be enabled even if a ‘1’ is
not written to this latch bit. When external memory is selected, the settings of P3DRRH are ignored.
WR
bit 6
External Data Memory Write Strobe. This pin provides an active low write strobe to an external memory device.
If Port 0 or Port 2 is selected for external memory in the HCR1 register, this function will be enabled even if a ‘1’ is
not written to this latch bit. When external memory is selected, the settings of P3DRRH are ignored.
T1
bit 5
Timer/Counter 1 External Input. A 1 to 0 transition on this pin will increment Timer 1.
T0
bit 4
Timer/Counter 0 External Input. A 1 to 0 transition on this pin will increment Timer 0.
INT1
bit 3
External Interrupt 1. A falling edge/low level on this pin will cause an external interrupt 1 if enabled.
INT0
bit 2
External Interrupt 0. A falling edge/low level on this pin will cause an external interrupt 0 if enabled.
TXD0
bit 1
Serial Port 0 Transmit. This pin transmits the serial Port 0 data in serial port modes 1, 2, 3, and emits the
synchronizing clock in serial port mode 0.
RXD0
bit 0
Serial Port 0 Receive. This pin receives the serial Port 0 data in serial port modes 1, 2, 3, and is a bidirectional data
transfer pin in serial port mode 0.
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Port 2 Data Direction Low Register (P2DDRL)
SFR B1h
P2.3
bits 7−6
P2.2
bits 5−4
P2.1
bits 3−2
P2.0
bits 1−0
7
6
5
4
3
2
1
0
Reset Value
P23H
P23L
P22H
P22L
P21H
P21L
P20H
P20L
00h
Port 2 Bit 3 Control.
P23H
P23L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 2 Bit 2 Control.
P22H
P22L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 2 Bit 1 Control.
P21H
P21L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 2 Bit 0 Control.
P20H
P20L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
NOTE: Port 2 also controlled by EA and Memory Access Control HCR1.1.
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Port 2 Data Direction High Register (P2DDRH)
SFR B2h
P2.7
bits 7−6
P2.6
bits 5−4
P2.5
bits 3−2
P2.4
bits 1−0
7
6
5
4
3
2
1
0
Reset Value
P27H
P27L
P26H
P26L
P25H
P25L
P24H
P24L
00h
Port 2 Bit 7 Control.
P27H
P27L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 2 Bit 6 Control.
P26H
P26L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 2 Bit 5 Control.
P25H
P25L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 2 Bit 4 Control.
P24H
P24L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
NOTE: Port 2 also controlled by EA and Memory Access Control HCR1.1.
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Port 3 Data Direction Low Register (P3DDRL)
SFR B3h
P3.3
bits 7−6
P3.2
bits 5−4
P3.1
bits 3−2
P3.0
bits 1−0
60
7
6
5
4
3
2
1
0
Reset Value
P33H
P33L
P32H
P32L
P31H
P31L
P30H
P30L
00h
Port 3 Bit 3 Control.
P33H
P33L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 3 Bit 2 Control.
P32H
P32L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 3 Bit 1 Control.
P31H
P31L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 3 Bit 0 Control.
P30H
P30L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
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Port 3 Data Direction High Register (P3DDRH)
SFR B4h
P3.7
bits 7−6
7
6
5
4
3
2
1
0
Reset Value
P37H
P37L
P36H
P36L
P35H
P35L
P34H
P34L
00h
Port 3 Bit 7 Control.
P37H
P37L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
NOTE: Port 3.7 also controlled by EA and Memory Access Control HCR1.1.
P3.6
bits 5−4
Port 3 Bit 6 Control.
P36H
P36L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
NOTE: Port 3.6 also controlled by EA and Memory Access Control HCR1.1.
P3.5
bits 3−2
P3.4
bits 1−0
Port 3 Bit 5 Control.
P35H
P35L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
Port 3 Bit 4 Control.
P34H
P34L
0
0
Standard 8051 (Pull-Up)
0
1
CMOS Output
1
0
Open Drain Output
1
1
Input
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Interrupt Priority (IP)
SFR B8h
7
6
5
4
3
2
1
0
Reset Value
1
PS1
PT2
PS0
PT1
PX1
PT0
PX0
80h
PS1
bit 6
Serial Port 1 Interrupt. This bit controls the priority of the serial Port 1 interrupt.
0 = Serial Port 1 priority is determined by the natural priority order.
1 = Serial Port 1 is a high priority interrupt.
PT2
bit 5
Timer 2 Interrupt. This bit controls the priority of the Timer 2 interrupt.
0 = Timer 2 priority is determined by the natural priority order.
1 = Timer 2 priority is a high priority interrupt.
PS0
bit 4
Serial Port 0 Interrupt. This bit controls the priority of the serial Port 0 interrupt.
0 = Serial Port 0 priority is determined by the natural priority order.
1 = Serial Port 0 is a high priority interrupt.
PT1
bit 3
Timer 1 Interrupt. This bit controls the priority of the Timer 1 interrupt.
0 = Timer 1 priority is determined by the natural priority order.
1 = Timer 1 priority is a high priority interrupt.
PX1
bit 2
External Interrupt 1. This bit controls the priority of external interrupt 1.
0 = External interrupt 1 priority is determined by the natural priority order.
1 = External interrupt 1 is a high priority interrupt.
PT0
bit 1
Timer 0 Interrupt. This bit controls the priority of the Timer 0 interrupt.
0 = Timer 0 priority is determined by the natural priority order.
1 = Timer 0 priority is a high priority interrupt.
PX0
bit 0
External Interrupt 0. This bit controls the priority of external interrupt 0.
0 = External interrupt 0 priority is determined by the natural priority order.
1 = External interrupt 0 is a high priority interrupt.
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Serial Port 1 Control (SCON1)
SFR C0h
SM0−2
bits 7−5
7
6
5
4
3
2
1
0
Reset Value
SM0_1
SM1_1
SM2_1
REN_1
TB8_1
RB8_1
TI_1
RI_1
00h
Serial Port 1 Mode. These bits control the mode of serial Port 1. Modes 1, 2, and 3 have 1 start and 1 stop bit
in addition to the 8 or 9 data bits.
(1)
(2)
(3)
(4)
MODE
SM0
SM1
SM2
0
0
0
0
0
0
0
1
FUNCTION
Synchronous
Synchronous
LENGTH
8 bits
8 bits
PERIOD
12 pCLK(1)
4 pCLK(1)
1
1(2)
0
0
1
1
0
1
Asynchronous
Valid Stop Required(3)
10 bits
10 bits
Timer 1 Baud Rate Equation
Timer 1 or Baud Rate Equation
2
1
0
0
Asynchronous
11 bits
2
1
0
1
Asynchronous with Multiprocessor
Communication(4)
11 bits
64 pCLK(1) (SMOD = 0)
32 pCLK(1) (SMOD = 1)
64 pCLK(1) (SMOD = 0)
32 pCLK(1) (SMOD = 1)
3
3
1
1
1
1
0
1
Asynchronous
Asynchronous with Multiprocessor
Communication(4)
11 bits
11 bits
Timer 1 Baud Rate Equation
Timer 1 Baud Rate Equation
pCLK will be equal to tCLK, except that pCLK will stop for IDLE.
For modes 1 and 3, the selection of Timer 1 or 2 for baud rate is specified via the T2CON (C8h) register.
RI_0 will only be activated when a valid STOP is received.
RI_0 will not be activated if bit 9 = 0.
REN_1
bit 4
Receive Enable. This bit enables/disables the serial Port 1 received shift register.
0 = Serial Port 1 reception disabled.
1 = Serial Port 1 received enabled (modes 1, 2, and 3). Initiate synchronous reception (mode 0).
TB8_1
bit 3
9th Transmission Bit State. This bit defines the state of the 9th transmission bit in serial Port 1 modes 2 and 3.
RB8_1
bit 2
9th Received Bit State. This bit identifies the state of the 9th reception bit of received data in serial Port 1 modes
2 and 3. In serial port mode 1, when SM2_1 = 0, RB8_1 is the state of the stop bit. RB8_1 is not used in mode 0.
TI_1
bit 1
Transmitter Interrupt Flag. This bit indicates that data in the serial Port 1 buffer has been completely shifted out.
In serial port mode 0, TI_1 is set at the end of the 8th data bit. In all other modes, this bit is set at the end of the last
data bit. This bit must be cleared by software to transmit the next byte.
RI_1
bit 0
Receiver Interrupt Flag. This bit indicates that a byte of data has been received in the serial Port 1 buffer. In serial
port mode 0, RI_1 is set at the end of the 8th bit. In serial port mode 1, RI_1 is set after the last sample of the incoming
stop bit subject to the state of SM2_1. In modes 2 and 3, RI_1 is set after the last sample of RB8_1. This bit must
be cleared by software to receive the next byte.
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Serial Data Buffer 1 (SBUF1)
7
6
5
4
3
2
1
0
SFR C1h
Reset Value
00h
SBUF1.7−0 Serial Data Buffer 1. Data for serial Port 1 is read from or written to this location. The serial transmit and receive
bits 7−0
buffers are separate registers, but both are addressed at this location.
Enable Wake Up (EWU) Waking Up from IDLE Mode
SFR C6h
7
6
5
4
3
2
1
0
Reset Value
—
—
—
—
—
EWUWDT
EWUEX1
EWUEX0
00h
Auxiliary interrupts will wake up from IDLE. They are enabled with EAI (EICON.5, SFR D8h).
EWUWDT
bit 2
Enable Wake Up Watchdog Timer. Wake using watchdog timer interrupt.
0 = Don’t wake up on watchdog timer interrupt.
1 = Wake up on watchdog timer interrupt.
EWUEX1
bit 1
Enable Wake Up External 1. Wake using external interrupt source 1.
0 = Don’t wake up on external interrupt source 1.
1 = Wake up on external interrupt source 1.
EWUEX0
bit 0
Enable Wake Up External 0. Wake using external interrupt source 0.
0 = Don’t wake up on external interrupt source 0.
1 = Wake up on external interrupt source 0.
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Timer 2 Control (T2CON)
SFR C8h
7
6
5
4
3
2
1
0
Reset Value
TF2
EXF2
RCLK
TCLK
EXEN2
TR2
C/T2
CP/RL2
00h
TF2
bit 7
Timer 2 Overflow Flag. This flag will be set when Timer 2 overflows from FFFFh. It must be cleared by software.
TF2 will only be set if RCLK and TCLK are both cleared to 0. Writing a 1 to TF2 forces a Timer 2 interrupt if enabled.
EXF2
bit 6
Timer 2 External Flag. A negative transition on the T2EX pin (P1.1) will cause this flag to be set based on the EXEN2
(T2CON.3) bit. If set by a negative transition, this flag must be cleared to 0 by software. Setting this bit in software
will force a timer interrupt if enabled.
RCLK
bit 5
Receive Clock Flag. This bit determines the serial Port 0 timebase when receiving data in serial modes 1 or 3.
0 = Timer 1 overflow is used to determine receiver baud rate for USART0.
1 = Timer 2 overflow is used to determine receiver baud rate for USART0.
Setting this bit will force Timer 2 into baud rate generation mode. The timer will operate from a divide by 2 of the
external clock.
TCLK
bit 4
Transmit Clock Flag. This bit determines the serial Port 0 timebase when transmitting data in serial modes 1 or 3.
0 = Timer 1 overflow is used to determine transmitter baud rate for USART0.
1 = Timer 2 overflow is used to determine transmitter baud rate for USART0.
Setting this bit will force Timer 2 into baud rate generation mode. The timer will operate from a divide by 2 of the
external clock.
EXEN2
bit 3
Timer 2 External Enable. This bit enables the capture/reload function on the T2EX pin if Timer 2 is not generating
baud rates for the serial port.
0 = Timer 2 will ignore all external events at T2EX.
1 = Timer 2 will capture or reload a value if a negative transition is detected on the T2EX pin.
TR2
bit 2
Timer 2 Run Control. This bit enables/disables the operation of Timer 2. Halting this timer will preserve the current
count in TH2, TL2.
0 = Timer 2 is halted.
1 = Timer 2 is enabled.
C/T2
bit 1
Counter/Timer Select. This bit determines whether Timer 2 will function as a timer or counter. Independent of this
bit, Timer 2 runs at 2 clocks per tick when used in baud rate generator mode.
0 = Timer 2 functions as a timer. The speed of Timer 2 is determined by the T2M bit (CKCON.5).
1 = Timer 2 will count negative transitions on the T2 pin (P1.0).
CP/RL2
bit 0
Capture/Reload Select. This bit determines whether the capture or reload function is used for Timer 2. If either RCLK
or TCLK is set, this bit will not function and the timer will function in an auto-reload mode following each overflow.
0 = Auto-reloads will occur when Timer 2 overflows or a falling edge is detected on T2EX if EXEN2 = 1.
1 = Timer 2 captures will occur when a falling edge is detected on T2EX if EXEN2 = 1.
Timer 2 Capture LSB (RCAP2L)
7
SFR CAh
RCAP2L
bits 7−0
6
5
4
3
2
1
0
Reset Value
00h
Timer 2 Capture LSB. This register is used to capture the TL2 value when Timer 2 is configured in capture mode.
RCAP2L is also used as the LSB of a 16-bit reload value when Timer 2 is configured in auto-reload mode.
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Timer 2 Capture MSB (RCAP2H)
7
6
5
4
3
2
1
0
Reset Value
SFR CBh
RCAP2H
bits 7−0
00h
Timer 2 Capture MSB. This register is used to capture the TH2 value when Timer 2 is configured in capture mode.
RCAP2H is also used as the MSB of a 16-bit reload value when Timer 2 is configured in auto-reload mode.
Timer 2 LSB (TL2)
7
6
5
4
3
2
1
0
Reset Value
SFR CCh
TL2
bits 7−0
00h
Timer 2 LSB. This register contains the least significant byte of Timer 2.
Timer 2 MSB (TH2)
7
6
5
4
3
2
1
0
Reset Value
SFR CDh
TH2
bits 7−0
00h
Timer 2 MSB. This register contains the most significant byte of Timer 2.
Program Status Word (PSW)
SFR D0h
7
6
5
4
3
2
1
0
Reset Value
CY
AC
F0
RS1
RS0
OV
F1
P
00h
CY
bit 7
Carry Flag. This bit is set when the last arithmetic operation resulted in a carry (during addition) or a borrow (during
subtraction). Otherwise, it is cleared to 0 by all arithmetic operations.
AC
bit 6
Auxiliary Carry Flag. This bit is set to 1 if the last arithmetic operation resulted in a carry into (during addition), or
a borrow (during subtraction) from the high-order nibble. Otherwise, it is cleared to 0 by all arithmetic operations.
F0
bit 5
User Flag 0. This is a bit-addressable, general-purpose flag for software control.
RS1, RS0
bits 4−3
Register Bank Select 1−0. These bits select which register bank is addressed during register accesses.
RS1
RS0
REGISTER BANK
0
0
0
ADDRESS
00h − 07h
0
1
1
08h − 0Fh
1
0
2
10h − 17h
1
1
3
18h − 1Fh
OV
bit 2
Overflow Flag. This bit is set to 1 if the last arithmetic operation resulted in a carry (addition), borrow (subtraction),
or overflow (multiply or divide). Otherwise it is cleared to 0 by all arithmetic operations.
F1
bit 1
User Flag 1. This is a bit-addressable, general-purpose flag for software control.
P
bit 0
Parity Flag. This bit is set to 1 if the modulo-2 sum of the 8 bits of the accumulator is 1 (odd parity); and cleared to
0 on even parity.
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ADC Offset Calibration Register Low Byte (OCL)
7
6
5
4
3
2
1
0
SFR D1h
OCL
bits 7−0
Reset Value
00h
ADC Offset Calibration Register Low Byte. This is the low byte of the 24-bit word that contains the ADC offset
calibration. A value that is written to this location will set the ADC offset calibration value.
ADC Offset Calibration Register Middle Byte (OCM)
7
6
5
4
3
2
1
0
SFR D2h
OCM
bits 7−0
Reset Value
00h
ADC Offset Calibration Register Middle Byte. This is the middle byte of the 24-bit word that contains the ADC offset
calibration. A value that is written to this location will set the ADC offset calibration value.
ADC Offset Calibration Register High Byte (OCH)
7
6
5
4
3
2
1
0
SFR D3h
OCH
bits 7−0
Reset Value
00h
ADC Offset Calibration Register High Byte. This is the high byte of the 24-bit word that contains the ADC offset
calibration. A value that is written to this location will set the ADC offset calibration value.
ADC Gain Calibration Register Low Byte (GCL)
7
6
5
4
3
2
1
0
SFR D4h
GCL
bits 7−0
Reset Value
5Ah
ADC Gain Calibration Register Low Byte. This is the low byte of the 24-bit word that contains the ADC gain
calibration. A value that is written to this location will set the ADC gain calibration value.
ADC Gain Calibration Register Middle Byte (GCM)
7
6
5
4
3
2
1
0
SFR D5h
GCM
bits 7−0
Reset Value
ECh
ADC Gain Calibration Register Middle Byte. This is the middle byte of the 24-bit word that contains the ADC gain
calibration. A value that is written to this location will set the ADC gain calibration value.
ADC Gain Calibration Register High Byte (GCH)
7
SFR D6h
GCH
bits 7−0
6
5
4
3
2
1
0
Reset Value
5Fh
ADC Gain Calibration Register High Byte. This is the high byte of the 24-bit word that contains the ADC gain
calibration. A value that is written to this location will set the ADC gain calibration value.
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ADC Multiplexer Register (ADMUX)
SFR D7h
INP3−0
bits 7−4
INN3−0
bits 3−0
68
7
6
5
4
3
2
1
0
Reset Value
INP3
INP2
INP1
INP0
INN3
INN2
INN1
INN0
01h
Input Multiplexer Positive Channel. This selects the positive signal input.
INP3
INP2
INP1
INP0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
1
1
1
1
0
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
POSITIVE INPUT
AIN0 (default)
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AINCOM
Temperature Sensor (requires ADMUX = FFh)
Input Multiplexer Negative Channel. This selects the negative signal input.
INN3
INN2
INN1
INN0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
1
1
1
1
0
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
NEGATIVE INPUT
AIN0
AIN1 (default)
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AINCOM
Temperature Sensor (requires ADMUX = FFh)
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Enable Interrupt Control (EICON)
SFR D8h
7
6
5
4
3
2
1
0
Reset Value
SMOD1
1
EAI
AI
WDTI
0
0
0
40h
SMOD1
bit 7
Serial Port 1 Mode. When this bit is set the serial baud rate for Port 1 will be doubled.
0 = Standard baud rate for Port 1 (default).
1 = Double baud rate for Port 1.
EAI
bit 5
Enable Auxiliary Interrupt. The Auxiliary Interrupt accesses nine different interrupts which are masked and
identified by SFR registers PAI (SFR A5h), AIE (SFR A6h), and AISTAT (SFR A7h).
0 = Auxiliary Interrupt disabled (default).
1 = Auxiliary Interrupt enabled.
AI
bit 4
Auxiliary Interrupt Flag. AI must be cleared by software before exiting the interrupt service routine, after the source
of the interrupt is cleared. Otherwise, the interrupt occurs again. Setting AI in software generates an Auxiliary
Interrupt, if enabled.
0 = No Auxiliary Interrupt detected (default).
1 = Auxiliary Interrupt detected.
WDTI
bit 3
Watchdog Timer Interrupt Flag. WDTI must be cleared by software before exiting the interrupt service routine.
Otherwise, the interrupt will occur again. Setting WDTI in software generates a watchdog time interrupt, if enabled.
The Watchdog timer can generate an interrupt or reset. The interrupt is available only if the reset action is disabled
in HCR0.
0 = No Watchdog Timer Interrupt detected (default).
1 = Watchdog Timer Interrupt detected.
ADC Results Register Low Byte (ADRESL)
7
6
5
4
3
2
1
0
SFR D9h
ADRESL
bits 7−0
Reset Value
00h
The ADC Results Low Byte. This is the low byte of the 24-bit word that contains the ADC converter results.
Reading from this register clears the ADC interrupt.
ADC Results Register Middle Byte (ADRESM)
7
6
5
4
3
2
1
0
SFR DAh
ADRESM
bits 7−0
Reset Value
00h
The ADC Results Middle Byte. This is the middle byte of the 24-bit word that contains the ADC converter results.
ADC Results Register High Byte (ADRESH)
7
SFR DBh
ADRESH
bits 7−0
6
5
4
3
2
1
0
Reset Value
00h
The ADC Results High Byte. This is the high byte of the 24-bit word that contains the ADC converter results.
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ADC Control Register 0 (ADCON0)
7
SFR DCh
6
5
4
3
2
1
0
Reset Value
BOD
EVREF
VREFH
EBUF
PGA2
PGA1
PGA0
30h
BOD
bit 6
Burnout Detect. When enabled this connects a positive current source to the positive channel and a negative
current source to the negative channel. If the channel is open circuit then the ADC results will be full-scale.
0 = Burnout Current Sources Off (default).
1 = Burnout Current Sources On.
EVREF
bit 5
Enable Internal Voltage Reference. If the internal voltage reference is not used, it should be turned off to save power
and reduce noise.
0 = Internal Voltage Reference Off.
1 = Internal Voltage Reference On (default). Note that REFIN− must be connected to AGND.
VREFH
bit 4
Voltage Reference High Select. The internal voltage reference can be selected to be 2.5V or 1.25V.
0 = REFOUT is 1.25V.
1 = REFOUT is 2.5V (default).
EBUF
bit 3
Enable Buffer. Enable the input buffer to provide higher input impedance but limits the input voltage range and
dissipates more power.
0 = Buffer disabled (default).
1 = Buffer enabled.
PGA2−0
bits 2−0
Programmable Gain Amplifier. Sets the gain for the PGA from 1 to 128.
70
PGA2
PGA1
PGA0
GAIN
0
0
0
1 (default)
0
0
1
2
0
1
0
4
0
1
1
8
1
0
0
16
1
0
1
32
1
1
0
64
1
1
1
128
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ADC Control Register 1 (ADCON1)
SFR DDh
7
6
5
4
3
2
1
0
Reset Value
OF_UF
POL
SM1
SM0
—
CAL2
CAL1
CAL0
0000 0000b
OF_UF
bit 7
Overflow/Underflow. If this bit is set, the data in the summation register is invalid. Either an overflow or underflow
occurred. The bit is cleared by writing a ‘0’ to it.
POL
bit 6
Polarity. Polarity of the ADC result and Summation register.
0 = Bipolar.
1 = Unipolar. The LSB size is 1/2 the size of bipolar (twice the resolution).
POL
ANALOG INPUT
DIGITAL OUTPUT
+FSR
0x7FFFFF
ZERO
0x000000
0
1
SM1−0
bits 5−4
CAL2−0
bits 2−0
−FSR
0x800000
+FSR
0xFFFFFF
ZERO
0x000000
−FSR
0x000000
Settling Mode. Selects the type of filter or auto select which defines the digital filter settling characteristics.
SM1
SM0
0
0
SETTLING MODE
Auto
0
1
1
0
Fast Settling Filter
Sinc2 Filter
1
1
Sinc3 Filter
Calibration Mode Control Bits.
CAL2
CAL1
CAL0
CALIBRATION MODE
0
0
0
No Calibration (default)
0
0
1
Self-Calibration, Offset and Gain
0
1
0
Self-Calibration, Offset only
0
1
1
Self-Calibration, Gain only
1
0
0
System Calibration, Offset only (requires external connection)
1
0
1
System Calibration, Gain only (requires external connection)
1
1
0
Reserved
1
1
1
Reserved
NOTE: Read Value—000b.
ADC Control Register 2 (ADCON2)
SFR DEh
DR7−0
bits 7−0
7
6
5
4
3
2
1
0
Reset Value
DR7
DR6
DR5
DR4
DR3
DR2
DR1
DR0
1Bh
Decimation Ratio LSB.
ADC Control Register 3 (ADCON3)
SFR DDh
DR10−8
bits 2−0
7
6
5
4
3
2
1
0
Reset Value
—
—
—
—
—
DR10
DR9
DR8
06h
Decimation Ratio Most Significant 3 Bits. The output data rate = (ACLK + 1)/64/Decimation Ratio.
71
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
Accumulator (A or ACC)
SFR DDh
ACC.7−0
bits 7−0
7
6
5
4
3
2
1
0
Reset Value
ACC.7
ACC.6
ACC.5
ACC.4
ACC.3
ACC.2
ACC.1
ACC.0
00h
Accumulator. This register serves as the accumulator for arithmetic and logic operations.
Summation/Shifter Control (SSCON)
SFR DDh
7
6
5
4
3
2
1
0
Reset Value
SSCON1
SSCON0
SCNT2
SCNT1
SCNT0
SHF2
SHF1
SHF0
00h
The Summation register is powered down when the ADC is powered down. If all zeroes are written to this register the 32-bit
SUMR3−0 registers will be cleared. The Summation registers will do sign extend if Bipolar is selected in ADCON1.
SSCON1−0 Summation/Shift Count.
bits 7−6
SOURCE
SSCON1
SSCON0
CPU
0
0
Values written to the SUM registers are accumulated when the SUMR0 value is written (sum/shift ignored)
ADC
0
1
Summation register Enabled. Source is ADC, summation count is working.
CPU
1
0
Shift Enabled. Summation register is shifted by SHF Count bits. It takes four system clocks to execute.
ADC
1
1
Accumulate and Shift Enable. Values are accumulated for SUM Count times and then shifted by SHF Count.
SCNT2−0
bits 5−3
SHF2−0
bits 2−0
72
MODE
Summation Count. When the summation is complete an interrupt will be generated unless masked. Reading the
SUMR0 register clears the interrupt.
SCNT2
SCNT1
SCNT0
SUMMATION COUNT
0
0
0
2
0
0
1
4
0
1
0
8
0
1
1
16
1
0
0
32
1
0
1
64
1
1
0
128
1
1
1
256
Shift Count.
SHF2
SHF1
SHF0
SHIFT
DIVIDE
0
0
0
1
2
0
0
1
2
4
0
1
0
3
8
0
1
1
4
16
1
0
0
5
32
1
0
1
6
64
1
1
0
7
128
1
1
1
8
256
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
Summation Register 0 (SUMR0)
7
6
5
4
3
2
1
0
Reset Value
SFR E2h
SUMR0
bits 7−0
00h
Summation Register 0. This is the least significant byte of the 32-bit summation register or bits 0 to 7.
Write: Will cause values in SUMR3−0 to be added to the summation register.
Read: Will clear the Summation Count Interrupt.
Summation Register 1 (SUMR1)
7
6
5
4
3
2
1
0
Reset Value
SFR E3h
SUMR1
bits 7−0
00h
Summation Register 1. This is the most significant byte of the lowest 16 bits of the summation register or bits 8−15.
Summation Register 2 (SUMR2)
7
6
5
4
3
2
1
0
Reset Value
SFR E4h
SUMR2
bits 7−0
00h
Summation Register 2. This is the most significant byte of the lowest 24 bits of the summation register or bits 16−23.
Summation Register 3 (SUMR3)
7
6
5
4
3
2
1
0
Reset Value
SFR E5h
SUMR3
bits 7−0
00h
Summation Register 3. This is the most significant byte of the 32-bit summation register or bits 24−31.
Offset DAC Register (ODAC)
7
6
5
4
3
2
SFR E6h
1
0
Reset Value
00h
ODAC
bits 7−0
bit 7
Offset DAC Register. This register will shift the input by up to half of the ADC full-scale input range. The offset DAC
value is summed with the ADC input prior to conversion. Writing 00h or 80h to ODAC turns off the offset DAC.
Offset DAC Sign bit.
0 = Positive
1 = Negative
bit 6−0
Offset +
ǒ
Ǔ
ODAC ƪ 6 : 0ƫ
*V REF
bit7
@
@ (* 1)
127
2 @ PGA
NOTE: ODAC cannot be used to offset the input so that the buffer can be used for AGND signals.
73
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
Low Voltage Detect Control (LVDCON)
SFR E7h
7
6
5
4
3
2
1
0
Reset Value
ALVDIS
ALVD2
ALVD1
ALVD0
DLVDIS
DLVD2
DLVD1
DLVD0
00h
ALVDIS
bit 7
Analog Low Voltage Detect Disable.
0 = Enable Detection of Low Analog Supply Voltage
1 = Disable Detection of Low Analog Supply Voltage
ALVD2−0
bits 6−4
Analog Voltage Detection Level.
ALVD2
ALVD1
ALVD0
VOLTAGE LEVEL
0
0
0
0
0
1
AVDD 2.7V (default)
AVDD 3.0V
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
AVDD 3.3V
AVDD 4.0V
AVDD 4.2V
AVDD 4.5V
AVDD 4.7V
External Voltage AIN7 compared to
1.2V
DLVDIS
bit 3
Digital Low Voltage Detect Disable.
0 = Enable Detection of Low Digital Supply Voltage
1 = Disable Detection of Low Digital Supply Voltage
DLVD2−0
bits 2−0
Digital Voltage Detection Level.
74
DLVD2
DLVD1
DLVD0
VOLTAGE LEVEL
0
0
0
0
0
1
DVDD 2.7V (default)
DVDD 3.0V
0
1
0
0
1
1
1
0
0
1
0
1
1
1
0
1
1
1
DVDD 3.3V
DVDD 4.0V
DVDD 4.2V
DVDD 4.5V
DVDD 4.7V
External Voltage AIN6 compared to
1.2V
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
Extended Interrupt Enable (EIE)
SFR E8h
7
6
5
4
3
2
1
0
Reset Value
1
1
1
EWDI
EX5
EX4
EX3
EX2
E0h
EWDI
bit 4
Enable Watchdog Interrupt. This bit enables/disables the watchdog interrupt. The Watchdog timer is enabled by
(SFR FFh) and PDCON (SFR F1h) registers.
0 = Disable the Watchdog Interrupt
1 = Enable Interrupt Request Generated by the Watchdog Timer
EX5
bit 3
External Interrupt 5 Enable. This bit enables/disables external interrupt 5.
0 = Disable External Interrupt 5
1 = Enable External Interrupt 5
EX4
bit 2
External Interrupt 4 Enable. This bit enables/disables external interrupt 4.
0 = Disable External Interrupt 4
1 = Enable External Interrupt 4
EX3
bit 1
External Interrupt 3 Enable. This bit enables/disables external interrupt 3.
0 = Disable External Interrupt 3
1 = Enable External Interrupt 3
EX2
bit 0
External Interrupt 2 Enable. This bit enables/disables external interrupt 2.
0 = Disable External Interrupt 2
1 = Enable External Interrupt 2
Hardware Product Code Register 0 (HWPC0) (read-only)
SFR E9h
7
6
5
4
3
2
1
0
Reset Value
0
0
0
0
0
0
MEMORY SIZE
0000_00xxb
HWPC1.7−0 Hardware Product Code LSB. Read-only.
bits 7−0
MEMORY
SIZE
MODEL
FLASH
MEMORY
4kB
0
0
MSC1210Y2
0
1
MSC1210Y3
8kB
1
0
MSC1210Y4
16kB
1
1
MSC1210Y5
32kB
Hardware Product Code Register 1 (HWPC1) (read-only)
SFR EAh
7
6
5
4
3
2
1
0
Reset Value
0
0
0
0
0
0
0
0
00h
HWPC1.7−0 Hardware Product Code MSB. Read-only.
bits 7−0
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
Hardware Version Register (HDWVER)
7
6
5
4
3
2
1
0
Reset Value
SFR EBh
Flash Memory Control (FMCON)
SFR EEh
7
6
5
4
3
2
1
0
Reset Value
0
PGERA
0
FRCM
0
BUSY
1
0
02h
PGERA
bit 6
Page Erase.
0 = MOVX to Flash will perform a byte write operation
1 = MOVX to Flash will perform a page erase operation
FRCM
bit 4
Frequency Control Mode.
0 = Bypass (default)
1 = Use Delay Line. Saves power when reading Flash (recommended)
BUSY
bit 2
Write/Erase BUSY Signal.
0 = Idle or Available
1 = Busy
Flash Memory Timing Control Register (FTCON)
SFR EFh
7
6
5
4
3
2
1
0
Reset Value
FER3
FER2
FER1
FER0
FWR3
FWR2
FWR1
FWR0
A5h
Refer to Flash Timing Characteristics.
FER3−0
bits 7−4
Set Erase. Flash Erase Time = (1 + FER) • (MSEC + 1) • tCLK.
A minimum of 10ms is needed for industrial temperature range.
A minimum of 4ms is needed for commercial temperature range.
FWR3−0
bits 3−0
Set Write. Flash Write Time = (1 + FWR) • (USEC + 1) • 5 • tCLK.
Write time should be 30−40µs.
B Register (B)
SFR F0h
B.7−0
bits 7−0
76
7
6
5
4
3
2
1
0
Reset Value
B.7
B.6
B.5
B.4
B.3
B.2
B.1
B.0
00h
B Register. This register serves as a second accumulator for certain arithmetic operations.
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
Power-Down Control Register (PDCON)
SFR F1h
7
6
5
4
3
2
1
0
Reset Value
0
0
0
PDPWM
PDADC
PDWDT
PDST
PDSPI
1Fh
Turning peripheral modules off puts the MSC1210 in the lowest power mode.
PDPWM
bit 4
Pulse Width Module Control.
0 = PWM On
1 = PWM Power Down
PDADC
bit 3
ADC Control.
0 = ADC On
1 = ADC, VREF, Summation registers, and Analog Brownout are powered down. Analog current = 0.
PDWDT
bit 2
Watchdog Timer Control.
0 = Watchdog Timer On
1 = Watchdog Timer Power Down
PDST
bit 1
System Timer Control.
0 = System Timer On
1 = System Timer Power Down
PDSPI
bit 0
SPI System Control.
0 = SPI System On
1 = SPI System Power Down
PSEN/ALE Select (PASEL)
SFR F2h
PSEN2−0
bits 5−3
ALE1−0
bits 1−0
7
6
5
4
3
2
1
0
Reset Value
0
0
PSEN2
PSEN1
PSEN0
0
ALE1
ALE0
00h
PSEN Mode Select.
PSEN2
PSEN1
PSEN0
0
0
x
PSEN
0
1
x
CLK
1
0
x
ADC
MODCLK
1
1
0
LOW
1
1
1
HIGH
ALE Mode Select.
ALE1
ALE0
0
x
ALE
1
0
LOW
1
1
HIGH
77
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
Analog Clock (ACLK)
SFR F6h
7
6
5
4
3
2
1
0
Reset Value
0
FREQ6
FREQ5
FREQ4
FREQ3
FREQ2
FREQ1
FREQ0
03h
FREQ6−0
Clock Frequency − 1. This value + 1 divides the system clock to create the ADC clock.
bit 6−0
ACLK frequency +
f MOD +
f CLK
FREQ ) 1
f CLK
(ACLK ) 1) @ 64
Data Rate +
f MOD
Decimation
System Reset Register (SRST)
SFR F7h
RSTREQ
bit 0
7
6
5
4
3
2
1
0
Reset Value
0
0
0
0
0
0
0
RSTREQ
00h
Reset Request. Setting this bit to 1 and then clearing to 0 will generate a system reset.
Extended Interrupt Priority (EIP)
SFR F8h
7
6
5
4
3
2
1
0
Reset Value
1
1
1
PWDI
PX5
PX4
PX3
PX2
E0h
PWDI
bit 4
Watchdog Interrupt Priority. This bit controls the priority of the watchdog interrupt.
0 = The watchdog interrupt is low priority.
1 = The watchdog interrupt is high priority.
PX5
bit 3
External Interrupt 5 Priority. This bit controls the priority of external interrupt 5.
0 = External interrupt 5 is low priority.
1 = External interrupt 5 is high priority.
PX4
bit 2
External Interrupt 4 Priority. This bit controls the priority of external interrupt 4.
0 = External interrupt 4 is low priority.
1 = External interrupt 4 is high priority.
PX3
bit 1
External Interrupt 3 Priority. This bit controls the priority of external interrupt 3.
0 = External interrupt 3 is low priority.
1 = External interrupt 3 is high priority.
PX2
bit 0
External Interrupt 2 Priority. This bit controls the priority of external interrupt 2.
0 = External interrupt 2 is low priority.
1 = External interrupt 2 is high priority.
78
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
Seconds Timer Interrupt (SECINT)
SFR F9h
7
6
5
4
3
2
1
0
Reset Value
WRT
SECINT6
SECINT5
SECINT4
SECINT3
SECINT2
SECINT1
SECINT0
7Fh
This system clock is divided by the value of the 16-bit register MSECH:MSECL. Then, the 1ms timer tick is divided by the
register HMSEC that provides the 100ms signal used by this seconds timer. Therefore, the seconds timer can generate
an interrupt that occurs from 100ms to 12.8 seconds. Reading this register clears the Seconds Interrupt. This Interrupt can
be monitored in the AIE register.
WRT
bit 7
Write Control. Determines whether to write the value immediately or wait until the current count is finished.
Read = 0.
0 = Delay Write Operation. The SEC value is loaded when the current count expires.
1 = Write Immediately. The counter is loaded once the CPU completes the write operation.
SECINT6−0 Seconds Count. Normal operation uses 100ms as the clock interval, and would equal: (SEC + 1)/10 seconds.
bits 6−0
Seconds Interrupt = (1 + SEC) • (HMSEC + 1) • (MSEC + 1) • tCLK
Milliseconds Interrupt (MSINT)
SFR FAh
7
6
5
4
3
2
1
0
Reset Value
WRT
MSINT6
MSINT5
MSINT4
MSINT3
MSINT2
MSINT1
MSINT0
7Fh
The clock used for this timer is the 1ms clock, which results from dividing the system clock by the values in registers
MSECH:MSECL. Reading this register clears the interrupt.
WRT
bit 7
Write Control. Determines whether to write the value immediately or wait until the current count is finished.
Read = 0.
0 = Delay Write Operation. The MSINT value is loaded when the current count expires.
1 = Write Immediately. The MSINT counter is loaded once the CPU completes the write operation.
MSINT6−0
bits 6−0
Seconds Count. Normal operation would use 1ms as the clock interval.
MS Interrupt Interval = (1 + MSINT) • (MSEC + 1) • tCLK
One Microsecond Register (USEC)
SFR FBh
FREQ4−0
bits 4−0
7
6
5
4
3
2
1
0
Reset Value
0
0
0
FREQ4
FREQ3
FREQ2
FREQ1
FREQ0
03h
Clock Frequency − 1. This value + 1 divides the system clock to create a 1µs clock.
USEC = CLK/(FREQ + 1). This clock is used to set Flash write time. See FTCON (SFR EFh).
One Millisecond Low Register (MSECL)
SFR FCh
7
6
5
4
3
2
1
0
Reset Value
MSECL7
MSECL6
MSECL5
MSECL4
MSECL3
MSECL2
MSECL1
MSECL0
9Fh
MSECL7−0 One Millisecond Low. This value in combination with the next register is used to create a 1ms clock.
bits 7−0
1ms = (MSECH • 256 + MSECL + 1) • tCLK. This clock is used to set Flash erase time. See FTCON (SFR EFh).
79
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SBAS203F − MARCH 2002 − REVISED NOVEMBER 2004
One Millisecond High Register (MSECH)
SFR FDh
7
6
5
4
3
2
1
0
Reset Value
MSECH7
MSECH6
MSECH5
MSECH4
MSECH3
MSECH2
MSECH1
MSECH0
0Fh
MSECH7−0 One Millisecond High. This value in combination with the previous register is used to create a 1ms clock.
bits 7−0
1ms = (MSECH • 256 + MSECL + 1) • tCLK
One Hundred Millisecond Register (HMSEC)
SFR FEh
7
6
5
4
3
2
1
0
Reset Value
HMSEC7
HMSEC6
HMSEC5
HMSEC4
HMSEC3
HMSEC2
HMSEC1
HMSEC0
63h
HMSEC7−0 One Hundred Millisecond. This clock divides the 1ms clock to create a 100ms clock.
bits 7−0
100ms = (MSECH • 256 + MSECL + 1) • (HMSEC + 1) • tCLK
Watchdog Timer Register (WDTCON)
SFR FFh
7
6
5
4
3
2
1
0
Reset Value
EWDT
DWDT
RWDT
WDCNT4
WDCNT3
WDCNT2
WDCNT1
WDCNT0
00h
EWDT
bit 7
Enable Watchdog (R/W).
Write 1/Write 0 sequence sets the Watchdog Enable Counting bit.
DWDT
bit 6
Disable Watchdog (R/W).
Write 1/Write 0 sequence clears the Watchdog Enable Counting bit.
RWDT
bit 5
Reset Watchdog (R/W).
Write 1/Write 0 sequence restarts the Watchdog Counter.
WDCNT4−0 Watchdog Count (R/W).
bits 4−0
Watchdog expires in (WDCNT + 1) • HMSEC to (WDCNT + 2) • HMSEC, if the sequence is not asserted. There is
an uncertainty of 1 count.
80
PACKAGE OPTION ADDENDUM
www.ti.com
21-Dec-2004
PACKAGING INFORMATION
Orderable Device
Status (1)
Package
Type
Package
Drawing
Pins Package Eco Plan (2)
Qty
MSC1210Y2PAGR
ACTIVE
TQFP
PAG
64
1500
None
CU SNPB
Level-3-235C-168 HR
MSC1210Y2PAGT
ACTIVE
TQFP
PAG
64
250
None
CU SNPB
Level-3-235C-168 HR
MSC1210Y3PAGR
ACTIVE
TQFP
PAG
64
1500
None
CU SNPB
Level-3-235C-168 HR
MSC1210Y3PAGT
ACTIVE
TQFP
PAG
64
250
None
CU SNPB
Level-3-235C-168 HR
MSC1210Y4PAGR
ACTIVE
TQFP
PAG
64
1500
None
CU SNPB
Level-3-235C-168 HR
Lead/Ball Finish
MSL Peak Temp (3)
MSC1210Y4PAGT
ACTIVE
TQFP
PAG
64
250
None
CU SNPB
Level-3-235C-168 HR
MSC1210Y5PAGR
ACTIVE
TQFP
PAG
64
1500
None
CU SNPB
Level-3-235C-168 HR
MSC1210Y5PAGT
ACTIVE
TQFP
PAG
64
250
None
CU SNPB
Level-3-235C-168 HR
(1)
The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
(2)
Eco Plan - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional
product content details.
None: Not yet available Lead (Pb-Free).
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
Green (RoHS & no Sb/Br): TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens,
including bromine (Br) or antimony (Sb) above 0.1% of total product weight.
(3)
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications, and peak solder
temperature.
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited
information may not be available for release.
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI
to Customer on an annual basis.
Addendum-Page 1
MECHANICAL DATA
MTQF006A – JANUARY 1995 – REVISED DECEMBER 1996
PAG (S-PQFP-G64)
PLASTIC QUAD FLATPACK
0,27
0,17
0,50
48
0,08 M
33
49
32
64
17
0,13 NOM
1
16
7,50 TYP
Gage Plane
10,20
SQ
9,80
12,20
SQ
11,80
0,25
0,05 MIN
1,05
0,95
0°– 7°
0,75
0,45
Seating Plane
0,08
1,20 MAX
4040282 / C 11/96
NOTES: A. All linear dimensions are in millimeters.
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-026
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
IMPORTANT NOTICE
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,
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Following are URLs where you can obtain information on other Texas Instruments products and application
solutions:
Products
Applications
Amplifiers
amplifier.ti.com
Audio
www.ti.com/audio
Data Converters
dataconverter.ti.com
Automotive
www.ti.com/automotive
DSP
dsp.ti.com
Broadband
www.ti.com/broadband
Interface
interface.ti.com
Digital Control
www.ti.com/digitalcontrol
Logic
logic.ti.com
Military
www.ti.com/military
Power Mgmt
power.ti.com
Optical Networking
www.ti.com/opticalnetwork
Microcontrollers
microcontroller.ti.com
Security
www.ti.com/security
Telephony
www.ti.com/telephony
Video & Imaging
www.ti.com/video
Wireless
www.ti.com/wireless
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Copyright  2004, Texas Instruments Incorporated
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