NSC COP881C-XXX/N Cop880c microcontroller Datasheet

COP880C
Connection Diagrams
Dual-In-Line Package
Dual-In-Line Package (N)
and 28 Wide SO (WM)
DS010802-23
Top View
Order Number COP882C-XXX/N, COP982C-XXX/N,
COP882C-XXX/WM, COP982C-XXX/WM,
COP982C-XXX/N or COP982CH-XXX/WM
DS010802-5
Top View
Order Number COP881C-XXX/N, COP981C-XXX/N,
COP881C-XXX/WM, COP981C-XXX/WM,
COP981CH-XXX/N or COP981CH-XXX/WM
Dual-In-Line Package
Plastic Chip Carrier
DS010802-3
Top View
Order Number COP680C-XXX/V, COP880C-XXX/V,
COP980C-XXX/V or COP980CH-XXX/V
DS010802-4
Top View
Order Number COP680C-XXX/N, COP880C-XXX/N,
COP980C-XXX/N or COP980CH-XXX/N
FIGURE 2. Connection Diagrams
3
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COP880C
COP980C/COP981C/COP982C
Absolute Maximum Ratings (Note 1)
Total Current into VCC Pin (Source)
Total Current out of GND Pin (Sink)
Storage Temperature Range
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (VCC)
Voltage at any Pin
50 mA
60 mA
−65˚C to +140˚C
Note 1: Absolute maximum ratings indicate limits beyond which damage to
the device may occur. DC and AC electrical specifications are not ensured
when operating the device at absolute maximum ratings.
7V
−0.3V to VCC + 0.3V
DC Electrical Characteristics
COP98xC; 0˚C ≤ TA ≤ +70˚C unless otherwise specified
Parameter
Condition
Min
Typ
Max
Units
Operating Voltage
98XC
2.3
4.0
V
98XCH
4.0
6.0
V
0.1 VCC
V
Power Supply Ripple (Note 2)
Peak to Peak
Supply Current
CKI = 10 MHz
VCC = 6V, tc = 1 µs
6.0
mA
CKI = 4 MHz
VCC = 6V, tc = 2.5 µs
4.4
mA
CKI = 4 MHz
VCC = 4.0V, tc = 2.5 µs
2.2
mA
CKI = 1 MHz
VCC = 4.0V, tc = 10 µs
1.4
mA
8
µA
5
µA
(Note 3)
HALT Current
VCC = 6V, CKI = 0 MHz
(Note 4)
VCC = 4.0V, CKI = 0 MHz
< 0.7
< 0.4
Input Levels
RESET, CKI
Logic High
0.9 VCC
Logic Low
V
0.1 VCC
V
All Other Inputs
Logic High
0.7 VCC
Logic Low
V
0.2 VCC
V
Hi-Z Input Leakage
VCC = 6.0V
−1.0
+1.0
µA
Input Pullup Current
VCC = 6.0V, VIN = 0V
−40
−250
µA
0.35 VCC
V
G Port Input Hysteresis
Output Current Levels
D Outputs
Source
Sink
VCC = 4.5V, VOH = 3.8V
−0.4
VCC = 2.3V, VOH = 1.6V
−0.2
mA
VCC = 4.5V, VOL = 1.0V
10
mA
VCC = 2.3V, VOL = 0.4V
2
mA
mA
All Others
Source (Weak Pull-Up)
Source (Push-Pull Mode)
Sink (Push-Pull Mode)
TRI-STATE Leakage
VCC = 4.5V, VOH = 3.2V
−10
−110
µA
VCC = 2.3V, VOH = 1.6V
−2.5
−33
µA
VCC = 4.5V, VOH = 3.8V
−0.4
VCC = 2.3V, VOH = 1.6V
−0.2
VCC = 4.5V, VOL = 0.4V
1.6
VCC = 2.3V, VOL = 0.4V
0.7
VCC = 6.0V
−1.0
mA
mA
+1.0
µA
Allowable Sink/Source
Current Per Pin
D Outputs (Sink)
15
mA
All Others
3
mA
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4
(Continued)
COP98xC; 0˚C ≤ TA ≤ +70˚C unless otherwise specified
Parameter
Condition
Min
Typ
Max
Units
± 100
mA
7
pF
1000
pF
Maximum Input Current (Note 5)
Without Latchup (Room Temp)
Room Temp
RAM Retention Voltage, Vr
500 ns Rise and
(Note 6)
Fall Time (Min)
2.0
V
Input Capacitance
Load Capacitance on D2
COP980C/COP981C/COP982C
Note 2: Rate of voltage change must be less than 0.5V/ms.
Note 3: Supply current is measured after running 2000 cycles with a square wave CKI input, CKO open, inputs at rails and outputs open.
Note 4: The HALT mode will stop CKI from oscillating in the RC and the Crystal configurations. Test conditions: All inputs tied to VCC, L, C and G ports TRI-STATE
and tied to ground, all outputs low and tied to ground.
Note 5: Pins G6 and RESET are designed with a high voltage input network for factory testing. These pins allow input voltages greater than VCC and the pins will
have sink current to VCC when biased at voltages greater than VCC (the pins do not have source current when biased at a voltage below VCC). The effective
resistance to VCC is 750Ω (typ). These two pins will not latch up. The voltage at the pins must be limited to less than 14V.
Note 6: To maintain RAM integrity, the voltage must not be dropped or raised instantaneously.
AC Electrical Characteristics
0˚C ≤ TA ≤ +70˚C unless otherwise specified
Parameter
Condition
Min
Typ
Max
Units
DC
µs
Instruction Cycle Time (tc)
Crystal/Resonator or External
VCC ≥ 4.0V
(Div-by 10)
2.3V ≤ VCC ≤ 4.0V
R/C Oscillator Mode
VCC ≥ 4.0V
(Div-by 10)
CKI Clock Duty Cycle (Note 7)
1
2.5
DC
µs
3
DC
µs
2.3V ≤ VCC ≤ 4.0V
7.5
DC
µs
fr = Max
40
60
%
Rise Time (Note 7)
fr = 10 MHz Ext Clock
12
ns
Fall Time (Note 7)
fr = 10 MHz Ext Clock
8
ns
Inputs
tSETUP
tHOLD
Output Propagation Delay
VCC ≥ 4.0V
200
2.3V ≤ VCC ≤ 4.0V
500
ns
VCC ≥ 4.0V
60
ns
2.3V ≤ VCC ≤ 4.0V
150
ns
ns
CL = 100 pF, RL = 2.2 kΩ
tPD1, tPD0
SO, SK
All Others
VCC ≥ 4.0V
0.7
2.3V ≤ VCC ≤ 4.0V
1.75
µs
1
µs
2.5
µs
VCC ≥ 4.0V
2.3V ≤ VCC ≤ 4.0V
µs
MICROWIRE™ Setup Time (tUWS)
20
ns
MICROWIRE Hold Time (tUWH)
56
ns
MICROWIRE Output
Propagation Delay (tUPD)
220
ns
Input Pulse Width
Interrupt Input High Time
tC
Interrupt Input Low Time
tC
Timer Input High Time
tC
Timer Input Low Time
tC
Reset Pulse Width
1.0
µs
Note 7: Parameter characterized but not production tested.
5
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COP880C
DC Electrical Characteristics
COP880C
COP880C/COP881C/COP882C
Absolute Maximum Ratings (Note 8)
Total Current into VCC Pin (Source)
Total Current out of GND Pin (Sink)
Storage Temperature Range
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (VCC)
Voltage at any Pin
50 mA
60 mA
−65˚C to +140˚C
Note 8: Absolute maximum ratings indicate limits beyond which damage to
the device may occur. DC and AC electrical specifications are not ensured
when operating the device at absolute maximum ratings.
7V
−0.3V to VCC + 0.3V
DC Electrical Characteristics
COP88xC; −40˚C ≤ TA ≤ +85˚C unless otherwise specified
Parameter
Condition
Min
Operating Voltage
Power Supply Ripple (Note 9)
Typ
2.5
Peak to Peak
Max
Units
6.0
V
0.1 VCC
V
Supply Current
CKI = 10 MHz
VCC = 6V, tc = 1 µs
6.0
mA
CKI = 4 MHz
VCC = 6V, tc = 2.5 µs
4.4
mA
CKI = 4 MHz
VCC = 4.0V, tc = 2.5 µs
2.2
mA
CKI = 1 MHz
VCC = 4.0V, tc = 10 µs
1.4
mA
(Note 10)
HALT Current
VCC = 6V, CKI = 0 MHz
(Note 11)
VCC = 3.5V, CKI = 0 MHz
<1
< 0.5
10
µA
6
µA
Input Levels
RESET, CKI
Logic High
0.9 VCC
Logic Low
V
0.1 VCC
V
All Other Inputs
Logic High
0.7 VCC
Logic Low
V
0.2 VCC
V
Hi-Z Input Leakage
VCC = 6.0V
−2
+2
µA
Input Pullup Current
VCC = 6.0V, VIN = 0V
−40
−250
µA
0.35 VCC
V
G Port Input Hysteresis
Output Current Levels
D Outputs
Source
Sink
VCC = 4.5V, VOH = 3.8V
−0.4
mA
VCC = 2.5V, VOH = 1.8V
−0.2
mA
VCC = 4.5V, VOL = 1.0V
10
mA
VCC = 2.5V, VOL = 0.4V
2
mA
VCC = 4.5V, VOH = 3.2V
−10
−110
VCC = 2.5V, VOH = 1.8V
−2.5
−33
VCC = 4.5V, VOH = 3.8V
−0.4
VCC = 2.5V, VOH = 1.8V
−0.2
All Others
Source (Weak Pull-Up)
Source (Push-Pull Mode)
Sink (Push-Pull Mode)
TRI-STATE Leakage
VCC = 4.5V, VOL = 0.4V
1.6
VCC = 2.5V, VOL = 0.4V
0.7
VCC = 6.0V
−2.0
µA
µA
mA
mA
+2.0
µA
Allowable Sink/Source
Current Per Pin
D Outputs (Sink)
15
mA
All Others
3
mA
± 100
mA
Maximum Input Current (Note 12)
Without Latchup (Room Temp)
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Room Temp
6
(Continued)
COP88xC; −40˚C ≤ TA ≤ +85˚C unless otherwise specified
Parameter
Condition
RAM Retention Voltage, Vr
500 ns Rise and
(Note 13)
Fall Time (Min)
Min
Typ
Max
2.0
Units
V
Input Capacitance
Load Capacitance on D2
7
pF
1000
pF
COP880C/COP881C/COP882C
Note 9: Rate of voltage change must be less than 0.5V/ms.
Note 10: Supply current is measured after running 2000 cycles with a square wave CKI input, CKO open, inputs at rails and outputs open.
Note 11: The HALT mode will stop CKI from oscillating in the RC and the Crystal configurations. Test conditions: All inputs tied to VCC, L, C and G ports TRI-STATE
and tied to ground, all outputs low and tied to ground.
Note 12: Pins G6 and RESET are designed with a high voltage input network for factory testing. These pins allow input voltages greater than VCC and the pins will
have sink current to VCC when biased at voltages greater than VCC (the pins do not have source current when biased at a voltage below VCC). The effective
resistance to VCC is 750Ω (typ). These two pins will not latch up. The voltage at the pins must be limited to less than 14V.
Note 13: To maintain RAM integrity, the voltage must not be dropped or raised instantaneously.
AC Electrical Characteristics
−40˚C ≤ TA ≤ +85˚C unless otherwise specified
Parameter
Condition
Min
Typ
Max
Units
Instruction Cycle Time (tc)
Crystal/Resonator or External
VCC ≥ 4.5V
(Div-by 10)
2.5V ≤ VCC < 4.5V
R/C Oscillator Mode
VCC ≥ 4.5V
(Div-by 10)
2.5V ≤ VCC
CKI Clock Duty Cycle (Note 14)
< 4.5V
fr = Max
1
DC
µs
2.5
DC
µs
3
DC
µs
7.5
DC
µs
40
60
%
Rise Time (Note 14)
fr = 10 MHz Ext Clock
12
ns
Fall Time (Note 14)
fr = 10 MHz Ext Clock
8
ns
Inputs
tSETUP
tHOLD
Output Propagation Delay
VCC ≥ 4.5V
200
ns
2.5V ≤ VCC < 4.5V
500
ns
VCC ≥ 4.5V
60
ns
2.5V ≤ VCC < 4.5V
150
ns
CL = 100 pF, RL = 2.2 kΩ
tPD1, tPD0
SO, SK
All Others
VCC ≥ 4.5V
0.7
µs
2.5V ≤ VCC < 4.5V
1.75
µs
1
µs
2.5
µs
VCC ≥ 4.5V
2.5V ≤ VCC < 4.5V
MICROWIRE Setup Time (tUWS)
20
ns
MICROWIRE Hold Time (tUWH)
56
ns
MICROWIRE Output
Propagation Delay (tUPD)
220
ns
Input Pulse Width
Interrupt Input High Time
tC
Interrupt Input Low Time
tC
Timer Input High Time
tC
Timer Input Low Time
tC
Reset Pulse Width
1.0
µs
Note 14: Parameter characterized but not production tested.
7
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COP880C
DC Electrical Characteristics
COP880C
Timing Diagram
DS010802-2
FIGURE 3. MICROWIRE/PLUS Timing
COP680C/COP681C/COP682C
Absolute Maximum Ratings (Note 16)
Total Current into VCC Pin (Source)
Total Current Out of GND Pin (Sink)
Storage Temperature Range
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (VCC)
Voltage at Any Pin
40 mA
48 mA
−65˚C to +140˚C
Note 15: Absolute maximum ratings indicate limits beyond which damage to
the device may occur. DC and AC electrical specifications are not ensured
when operating the device at absolute maximum ratings.
6V
−0.3V to VCC + 0.3V
DC Electrical Characteristics
COP68xC: −55˚C ≤ TA ≤ +125˚C unless otherwise specified
Parameter
Condition
Operating Voltage
Power Supply Ripple (Note 17)
Min
Typ
4.5
Peak to Peak
Max
Units
5.5
V
0.1 VCC
V
Supply Current (Note 18)
CKI = 10 MHz
VCC = 5.5V, tc = 1 µs
8.0
mA
CKI = 4 MHz
VCC = 5.5V, tc = 2.5 µs
4.4
mA
30
µA
HALT Current (Note 19)
< 10
VCC = 5.5V, CKI = 0 MHz
Input Levels
RESET, CKI
Logic High
0.9 VCC
Logic Low
V
0.1 VCC
V
All Other Inputs
Logic High
0.7 VCC
Logic Low
V
0.2 VCC
V
Hi-Z Input Leakage
VCC = 5.5V
−5
+5
µA
Input Pullup Current
VCC = 5.5V, VIN = 0V
−35
−300
µA
0.35 VCC
V
G Port Input Hysteresis
Output Current Levels
D Outputs
Source
VCC = 4.5V, VOH = 3.8V
−0.35
mA
Sink
VCC = 4.5V, VOL = 1.0V
9
mA
Source (Weak Pull-Up)
VCC = 4.5V, VOH = 3.2V
−9
Source (Push-Pull Mode)
VCC = 4.5V, VOH = 3.2V
−0.35
mA
Sink (Push-Pull Mode)
VCC = 4.5V, VOL = 0.4V
1.4
mA
TRI-STATE Leakage
VCC = 5.5V
−5.0
All Others
−120
µA
+5.0
µA
D Outputs (Sink)
12
mA
All Others
2.5
mA
Allowable Sink/Source Current per Pin
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8
(Continued)
COP68xC: −55˚C ≤ TA ≤ +125˚C unless otherwise specified
Parameter
Condition
Min
Typ
Max
Units
± 100
mA
7
pF
1000
pF
Maximum Input Current (Room Temp)
without Latchup (Note 20)
RAM Retention Voltage, Vr (Note 21)
Room Temp
500 ns Rise and Fall Time (Min)
2.5
V
Input Capacitance
Load Capacitance on D2
Note 16: Absolute maximum ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications are not ensured when
operating the device at absolute maximum ratings.
Note 17: Rate of voltage change must be less than 0.5V/ms.
Note 18: Supply current is measured after running 2000 cycles with a square wave CKI input, CKO open, inputs at rails and outputs open.
Note 19: The HALT mode will stop CKI from oscillating in the RC and the Crystal configurations. Test conditions: All inputs tied to VCC, L and G ports TRI-STATE
and tied to ground, all outputs low and tied to ground.
Note 20: Pins G6 and RESET are designed with a high voltage input network for factory testing. These pins allow input voltages greater than VCC and the pins will
have sink current to VCC when biased at voltages greater than VCC (the pins do not have source current when biased at a voltage below VCC). The effective
resistance to VCC is 750Ω (typical). These two pins will not latch up. The voltage at the pins must be limited to less than 14V.
Note 21: To maintain RAM integrity, the voltage must not be dropped or raised instantaneously.
COP680C/COP681C/COP682C
AC Electrical Characteristics
−55˚C ≤ TA ≤ +125˚C unless otherwise specified
Parameter
Condition
Min
Typ
Max
Units
Instruction Cycle Time (tc)
Ext. or Crystal/Resonant
VCC ≥ 4.5V
1
DC
µs
fr = Max
40
60
%
12
ns
(Div-by 10)
CKI Clock Duty Cycle
(Note 22)
Rise Time (Note 22)
fr = 10 MHz Ext Clock
Fall Time (Note 22)
fr = 10 MHz Ext Clock
8
MICROWIRE Setup Time (tUWS)
20
MICROWIRE Hold Time (tUWH)
56
MICROWIRE Output Valid
ns
ns
ns
220
ns
Time (tUPD)
Input Pulse Width
Interrupt Input High Time
tC
Interrupt Input Low Time
tC
Timer Input High Time
tC
Timer Input Low Time
tC
Reset Pulse Width
1
µs
Note 22: Parameter characterized but not production tested.
9
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COP880C
DC Electrical Characteristics
COP880C
Typical Performance Characteristics
(−40˚C ≤ TA ≤ +85˚C)
Hall — IDD
Dynamic — IDD (Crystal Clock Option)
DS010802-16
Port L/C/G Weak Pull-Up
DS010802-17
Port L/C/G Push-Pull Source Current
DS010802-18
Port L/C/G Push-Pull Sink Current
DS010802-19
Port D Source Current
DS010802-20
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DS010802-21
10
COP880C
Typical Performance Characteristics
(−40˚C ≤ TA ≤ +85˚C) (Continued)
Port D Sink Current
DS010802-22
Pin Descriptions
VCC and GND are the power supply pins.
CKI is the clock input. This can come from an external
source, a R/C generated oscillator or a crystal (in conjunction with CKO). See Oscillator description.
RESET is the master reset input. See Reset description.
PORT I is an 8-bit Hi-Z input port. The 28-pin device does not
have a full complement of Port I pins. The unavailable pins
are not terminated i.e., they are floating. A read operation for
these unterminated pins will return unpredictable values.
The user must ensure that the software takes this into account by either masking or restricting the accesses to bit
operations. The unterminated Port I pins will draw power
only when addressed.
PORT L is an 8-bit I/O port.
PORT C is a 4-bit I/O port.
Three memory locations are allocated for the L, G and C
ports, one each for data register, configuration register and
the input pins. Reading bits 4–7 of the C-Configuration register, data register, and input pins returns undefined data.
There are two registers associated with the L and C ports: a
data register and a configuration register. Therefore, each L
and C I/O bit can be individually configured under software
control as shown below:
Config.
Data
0
0
Hi-Z Input (TRI-STATE Output)
0
1
Input with Pull-Up (Weak One Output)
1
0
Push-Pull Zero Output
1
1
Push-Pull One Output
Config.
Data
Port G Setup
0
0
Hi-Z Input (TRI-STATE Output)
0
1
Input with Pull-Up (Weak One Output)
1
0
Push-Pull Zero Output
1
1
Push-Pull One Output
Since G6 and G7 are input only pins, any attempt by the user
to configure them as outputs by writing a one to the configuration register will be disregarded. Reading the G6 and G7
configuration bits will return zeros. The device will be placed
in the HALT mode by writing to the G7 bit in the G-port data
register.
Six pins of Port G have alternate features:
G0 INTR (an external interrupt)
G3 TIO (timer/counter input/output)
G4 SO (MICROWIRE serial data output)
G5 SK (MICROWIRE clock I/O)
G6 SI (MICROWIRE serial data input)
G7 CKO crystal oscillator output (selected by mask option)
or HALT restart input (general purpose input)
Pins G1 and G2 currently do not have any alternate functions.
PORT D is an 8-bit output port that is preset high when
RESET goes low. Care must be exercised with the D2 pin
operation. At RESET, the external loads on this pin must
ensure that the output voltages stay above 0.9 VCC to prevent the chip from entering special modes. Also, keep the
external loading on D2 to less than 1000 pF.
Ports L and C Setup
Functional Description
On the 28-pin part, it is recommended that all bits of Port C
be configured as outputs.
PORT G is an 8-bit port with 6 I/O pins (G0–G5) and 2 input
pins (G6, G7). All eight G-pins have Schmitt Triggers on the
inputs.
There are two registers associated with the G port: a data
register and a configuration register. Therefore, each G port
bit can be individually configured under software control as
shown below:
Figure 1 shows the block diagram of the internal architecture. Data paths are illustrated in simplified form to depict
how the various logic elements communicate with each
other in implementing the instruction set of the device.
ALU AND CPU REGISTERS
The ALU can do an 8-bit addition, subtraction, logical or shift
operation in one cycle time.
There are five CPU registers:
A is the 8-bit Accumulator register
PU is the upper 7 bits of the program counter (PC)
PL is the lower 8 bits of the program counter (PC)
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COP880C
Functional Description
(Continued)
B is the 8-bit address register, can be auto incremented or
decremented.
X is the 8-bit alternate address register, can be incremented
or decremented.
SP is the 8-bit stack pointer, points to subroutine stack (in
RAM).
B, X and SP registers are mapped into the on chip RAM. The
B and X registers are used to address the on chip RAM. The
SP register is used to address the stack in RAM during
subroutine calls and returns.
DS010802-6
RC ≥ 5X Power Supply Rise Time
FIGURE 4. Recommended Reset Circuit
OSCILLATOR CIRCUITS
Figure 5 shows the three clock oscillator configurations.
PROGRAM MEMORY
Program memory consists of 4096 bytes of ROM. These
bytes may hold program instructions or constant data. The
program memory is addressed by the 15-bit program
counter (PC). ROM can be indirectly read by the LAID instruction for table lookup.
A. CRYSTAL OSCILLATOR
The device can be driven by a crystal clock. The crystal
network is connected between the pins CKI and CKO.
Table 1 shows the component values required for various
standard crystal values.
DATA MEMORY
The data memory address space includes on chip RAM, I/O
and registers. Data memory is addressed directly by the
instruction or indirectly by the B, X and SP registers.
The device has 128 bytes of RAM. Sixteen bytes of RAM are
mapped as “registers” that can be loaded immediately, decremented or tested. Three specific registers: B, X and SP are
mapped into this space, the other bytes are available for
general usage.
The instruction set permits any bit in memory to be set, reset
or tested. All I/O and registers (except the A & PC) are
memory mapped; therefore, I/O bits and register bits can be
directly and individually set, reset and tested. A is not
memory mapped, but bit operations can be still performed on
it.
B. EXTERNAL OSCILLATOR
CKI can be driven by an external clock signal. CKO is
available as a general purpose input and/or HALT restart
control.
C. R/C OSCILLATOR
CKI is configured as a single pin RC controlled Schmitt
trigger oscillator. CKO is available as a general purpose
input and/or HALT restart control.
Table 2 shows the variation in the oscillator frequencies as
functions of the component (R and C) values.
Note: RAM contents are undefined upon power-up.
RESET
The RESET input when pulled low initializes the microcontroller. Initialization will occur whenever the RESET input is
pulled low. Upon initialization, the ports L, G and C are
placed in the TRI-STATE mode and the Port D is set high.
The PC, PSW and CNTRL registers are cleared. The data
and configuration registers for Ports L, G and C are cleared.
The external RC network shown in Figure 4 should be used
to ensure that the RESET pin is held low until the power
supply to the chip stabilizes.
DS010802-7
FIGURE 5. Crystal and R-C Connection Diagrams
OSCILLATOR MASK OPTIONS
The device can be driven by clock inputs between DC and
10 MHz.
TABLE 1. Crystal Oscillator Configuration, TA = 25˚C
R1
R2
C1
C2
CKI Freq
(kΩ)
(MΩ)
(pF)
(pF)
(MHz)
0
1
30
30–36
10
VCC = 5V
0
1
30
30–36
4
VCC = 2.5V
5.6
1
200
100–150
0.455
VCC = 5V
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12
Conditions
COP880C
Functional Description
(Continued)
TABLE 2. RC Oscillator Configuration, TA = 25˚C
R
C
CKI Freq.
Instr. Cycle
Conditions
(kΩ)
(pF)
(MHz)
(µs)
3.3
82
2.2 to 2.7
3.7 to 4.6
VCC = 5V
5.6
100
1.1 to 1.3
7.4 to 9.0
VCC = 5V
6.8
100
0.9 to 1.1
8.8 to 10.8
VCC = 5V
Note 23: (R/C Oscillator Configuration): 3k ≤ R ≤ 200k, 50 pF ≤ C ≤ 200 pF.
ENI and ENTI bits select external and timer interrupt respectively. Thus the user can select either or both sources to
interrupt the microcontroller when GIE is enabled.
IEDG selects the external interrupt edge (0 = rising edge,
1 = falling edge). The user can get an interrupt on both rising
and falling edges by toggling the state of IEDG bit after each
interrupt.
IPND and TPND bits signal which interrupt is pending. After
interrupt is acknowledged, the user can check these two bits
to determine which interrupt is pending. This permits the
interrupts to be prioritized under software. The pending flags
have to be cleared by the user. Setting the GIE bit high
inside the interrupt subroutine allows nested interrupts.
The software interrupt does not reset the GIE bit. This
means that the controller can be interrupted by other interrupt sources while servicing the software interrupt.
The device has three mask options for configuring the clock
input. The CKI and CKO pins are automatically configured
upon selecting a particular option.
• Crystal (CKI/10); CKO for crystal configuration
• External (CKI/10); CKO available as G7 input
• R/C (CKI/10); CKO available as G7 input
G7 can be used either as a general purpose input or as a
control input to continue from the HALT mode.
HALT MODE
The device supports a power saving mode of operation:
HALT. The controller is placed in the HALT mode by setting
the G7 data bit, alternatively the user can stop the clock
input. In the HALT mode all internal processor activities
including the clock oscillator are stopped. The fully static
architecture freezes the state of the controller and retains all
information until continuing. In the HALT mode, power requirements are minimal as it draws only leakage currents
and output current. The applied voltage (VCC) may be decreased down to Vr (minimum RAM retention voltage) without altering the state of the machine.
There are two ways to exit the HALT mode: via the RESET
or by the CKO pin. A low on the RESET line reinitializes the
microcontroller and starts executing from the address
0000H. A low to high transition on the CKO pin (only if the
external or R/C clock option selected) causes the microcontroller to continue with no reinitialization from the address
following the HALT instruction. This also resets the G7 data
bit.
INTERRUPT PROCESSING
The interrupt, once acknowledged, pushes the program
counter (PC) onto the stack and the stack pointer (SP) is
decremented twice. The Global Interrupt Enable (GIE) bit is
reset to disable further interrupts. The microcontroller then
vectors to the address 00FFH and resumes execution from
that address. This process takes 7 cycles to complete. At the
end of the interrupt subroutine, any of the following three
instructions return the processor back to the main program:
RET, RETSK or RETI. Either one of the three instructions will
pop the stack into the program counter (PC). The stack
pointer is then incremented twice. The RETI instruction additionally sets the GIE bit to re-enable further interrupts.
Any of the three instructions can be used to return from a
hardware interrupt subroutine. The RETSK instruction
should be used when returning from a software interrupt
subroutine to avoid entering an infinite loop.
INTERRUPTS
There are three interrupt sources, as shown below.
A maskable interrupt on external G0 input (positive or negative edge sensitive under software control)
A maskable interrupt on timer underflow or timer capture
A non-maskable software/error interrupt on opcode zero
Note: There is always the possibility of an interrupt occurring during an
instruction which is attempting to reset the GIE bit or any other interrupt enable bit. If this occurs when a single cycle instruction is being
used to reset the interrupt enable bit, the interrupt enable bit will be
reset but an interrupt may still occur. This is because interrupt processing is started at the same time as the interrupt bit is being reset. To
avoid this scenario, the user should always use a two, three or four
cycle instruction to reset interrupt enable bits.
INTERRUPT CONTROL
The GIE (global interrupt enable) bit enables the interrupt
function. This is used in conjunction with ENI and ENTI to
select one or both of the interrupt sources. This bit is reset
when interrupt is acknowledged.
13
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COP880C
Functional Description
(Continued)
DS010802-8
FIGURE 6. Interrupt Block Diagram
DETECTION OF ILLEGAL CONDITIONS
The device contains a hardware mechanism that allows it to
detect illegal conditions which may occur from coding errors,
noise and “brown out” voltage drop situations. Specifically it
detects cases of executing out of undefined ROM area and
unbalanced stack situations.
Reading an undefined ROM location returns 00 (hexadecimal) as its contents. The opcode for a software interrupt is
also “00”. Thus a program accessing undefined ROM will
cause a software interrupt.
Reading an undefined RAM location returns an FF (hexadecimal). The subroutine stack grows down for each subroutine call. By initializing the stack pointer to the top of RAM,
the first unbalanced return instruction will cause the stack
pointer to address undefined RAM. As a result the program
will attempt to execute from FFFF (hexadecimal), which is an
undefined ROM location and will trigger a software interrupt.
where,
tC is the instruction cycle clock.
MICROWIRE/PLUS OPERATION
Setting the BUSY bit in the PSW register causes the
MICROWIRE/PLUS arrangement to start shifting the data. It
gets reset when eight data bits have been shifted. The user
may reset the BUSY bit by software to allow less than 8 bits
to shift. The devoce may enter the MICROWIRE/PLUS
mode either as a Master or as a Slave. Figure 8 shows how
two COP880C microcontrollers and several peripherals may
be interconnected using the MICROWIRE/PLUS arrangement.
Master MICROWIRE/PLUS Operation
In the MICROWIRE/PLUS Master mode of operation the
shift clock (SK) is generated internally. The MICROWIRE/
PLUS Master always initiates all data exchanges. (See Figure 8). The MSEL bit in the CNTRL register must be set to
enable the SO and SK functions onto the G Port. The SO
and SK pins must also be selected as outputs by setting
appropriate bits in the Port G configuration register. Table 4
summarizes the bit settings required for Master mode of
operation.
MICROWIRE/PLUS
MICROWIRE/PLUS is a serial synchronous bidirectional
communications interface. The MICROWIRE/PLUS capability enables the device to interface with any of National
Semiconductor’s MICROWIRE peripherals (i.e. A/D converters, display drivers, EEPROMS, etc.) and with other microcontrollers which support the MICROWIRE/PLUS interface.
It consists of an 8-bit serial shift register (SIO) with serial
data input (SI), serial data output (SO) and serial shift clock
(SK). Figure 7 shows the block diagram of the MICROWIRE/
PLUS interface.
The shift clock can be selected from either an internal source
or an external source. Operating the MICROWIRE/PLUS
interface with the internal clock source is called the Master
mode of operation. Similarly, operating the MICROWIRE/
PLUS interface with an external shift clock is called the Slave
mode of operation.
The CNTRL register is used to configure and control the
MICROWIRE/PLUS mode. To use the MICROWIRE/PLUS,
the MSEL bit in the CNTRL register is set to one. The SK
clock rate is selected by the two bits, SL0 and SL1, in the
CNTRL register. Table 3 details the different clock rates that
may be selected.
SLAVE MICROWIRE/PLUS OPERATION
In the MICROWIRE/PLUS Slave mode of operation the SK
clock is generated by an external source. Setting the MSEL
bit in the CNTRL register enables the SO and SK functions
onto the G Port. The SK pin must be selected as an input
and the SO pin is selected as an output pin by appropriately
setting up the Port G configuration register. Table 4 summarizes the settings required to enter the Slave mode of operation.
The user must set the BUSY flag immediately upon entering
the Slave mode. This will ensure that all data bits sent by the
Master will be shifted properly. After eight clock pulses the
BUSY flag will be cleared and the sequence may be repeated. (See Figure 8.)
TABLE 3.
SL1
SL0
SK Cycle Time
0
0
2tC
0
1
4tC
1
x
8tC
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14
COP880C
Functional Description
(Continued)
TABLE 4.
G4
G5
G4
G5
G6
Config.
Config.
Fun.
Fun.
Fun.
Bit
Bit
1
1
SO
Int.
SK
SI
MICROWIRE
Master
0
1
TRI-STATE
Int.
SK
SI
MICROWIRE
Master
1
0
SO
Ext.
SK
SI
MICROWIRE
Slave
0
0
TRI-STATE
Ext.
SK
SI
MICROWIRE
Slave
Operation
DS010802-9
TIMER/COUNTER
The device has a powerful 16-bit timer with an associated
16-bit register enabling them to perform extensive timer
functions. The timer T1 and its register R1 are each organized as two 8-bit read/write registers. Control bits in the
register CNTRL allow the timer to be started and stopped
under software control. The timer-register pair can be operated in one of three possible modes. Table 5 details various
timer operating modes and their requisite control settings.
FIGURE 7. MICROWIRE/PLUS Block Diagram
MODE 1. TIMER WITH AUTO-LOAD REGISTER
In this mode of operation, the timer T1 counts down at the
instruction cycle rate. Upon underflow the value in the register R1 gets automatically reloaded into the timer which
continues to count down. The timer underflow can be programmed to interrupt the microcontroller. A bit in the control
register CNTRL enables the TIO (G3) pin to toggle upon
timer underflows. This allow the generation of square-wave
outputs or pulse width modulated outputs under software
control. (See Figure 9.)
MODE 2. EXTERNAL COUNTER
In this mode, the timer T1 becomes a 16-bit external event
counter. The counter counts down upon an edge on the TIO
pin. Control bits in the register CNTRL program the counter
to decrement either on a positive edge or on a negative
edge. Upon underflow the contents of the register R1 are
automatically copied into the counter. The underflow can
also be programmed to generate an interrupt. (See Figure 9)
MODE 3. TIMER WITH CAPTURE REGISTER
Timer T1 can be used to precisely measure external frequencies or events in this mode of operation. The timer T1
counts down at the instruction cycle rate. Upon the occurrence of a specified edge on the TIO pin the contents of the
timer T1 are copied into the register R1. Bits in the control
register CNTRL allow the trigger edge to be specified either
as a positive edge or as a negative edge. In this mode the
user can elect to be interrupted on the specified trigger edge.
(See Figure 10.)
15
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COP880C
Functional Description
(Continued)
DS010802-10
FIGURE 8. MICROWIRE/PLUS Application
TABLE 5. Timer Operating Modes
CNTRL
Timer
Bits
Operation Mode
T Interrupt
Counts
765
On
000
External Counter W/Auto-Load Reg.
Timer Underflow
001
External Counter W/Auto-Load Reg.
Timer Underflow
TIO Pos. Edge
TIO Neg. Edge
010
Not Allowed
Not Allowed
Not Allowed
011
Not Allowed
Not Allowed
Not Allowed
100
Timer W/Auto-Load Reg.
Timer Underflow
tC
101
Timer W/Auto-Load Reg./Toggle TIO Out
Timer Underflow
tC
110
Timer W/Capture Register
TIO Pos. Edge
tC
111
Timer W/Capture Register
TIO Neg. Edge
tC
DS010802-12
DS010802-11
FIGURE 10. Timer Capture Mode Block Diagram
FIGURE 9. Timer/Counter Auto
Reload Mode Block Diagram
TIMER PWM APPLICATION
Figure 11 shows how a minimal component D/A converter
can be built out of the Timer-Register pair in the Auto-Reload
mode. The timer is placed in the “Timer with auto reload”
mode and the TIO pin is selected as the timer output. At the
outset the TIO pin is set high, the timer T1 holds the on time
and the register R1 holds the signal off time. Setting TRUN
bit starts the timer which counts down at the instruction cycle
rate. The underflow toggles the TIO output and copies the off
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16
DIRECT
(Continued)
The instruction contains an 8-bit address field that directly
points to the data memory for the operand.
time into the timer, which continues to run. By alternately
loading in the on time and the off time at each successive
interrupt a PWM frequency can be easily generated.
IMMEDIATE
The instruction contains an 8-bit immediate field as the
operand.
REGISTER INDIRECT
(AUTO INCREMENT AND DECREMENT)
This is a register indirect mode that automatically increments
or decrements the B or X register after executing the instruction.
RELATIVE
This mode is used for the JP instruction, the instruction field
is added to the program counter to get the new program
location. JP has a range of from −31 to +32 to allow a one
byte relative jump (JP + 1 is implemented by a NOP instruction). There are no “pages” when using JP, all 15 bits of PC
are used.
DS010802-13
FIGURE 11. Timer Application
Control Registers
Memory Map
CNTRL REGISTER (ADDRESS X’00EE)
The Timer and MICROWIRE/PLUS control register contains
the following bits:
SL1 & SL0 Select the MICROWIRE/PLUS clock divide-by
IEDG
External interrupt edge polarity select
(0 = rising edge, 1 = falling edge)
MSEL
Enable MICROWIRE/PLUS functions SO and
SK
TRUN
Start/Stop the Timer/Counter (1 = run, 0 = stop)
TC3
Timer input edge polarity select (0 = rising
edge, 1 = falling edge)
TC2
Selects the capture mode
TC1
Selects the timer mode
TC1
TC2
TC3
TRUN
MSEL
IEDG
SL1
BIT
7
All RAM, ports and registers (except A and PC) are mapped
into data memory address space.
Address
On Chip RAM Bytes
70 to 7F
Unused RAM Address Space (Reads as all Ones)
80 to BF
Expansion Space for future use
C0 to
CF
Expansion Space for I/O and Registers
D0 to
DF
On Chip I/O and Registers
D0
Port L Data Register
D1
Port L Configuration Register
D2
Port L Input Pins (Read Only)
SL0
D3
Reserved for Port L
BIT
0
D4
Port G Data Register
D5
Port G Configuration Register
D6
Port G Input Pins (Read Only)
D7
Port I Input Pins (Read Only)
D8
Port C Data Register
PSW REGISTER (ADDRESS X’00EF)
The PSW register contains the following select bits:
GIE
ENI
BUSY
IPND
ENTI
TPND
C
HC
Contents
00 to 6F
Global interrupt enable
External interrupt enable
MICROWIRE/PLUS busy shifting
External interrupt pending
Timer interrupt enable
Timer interrupt pending
Carry Flag
Half carry Flag
D9
Port C Configuration Register
DA
Port C Input Pins (Read Only)
DB
Reserved for Port C
DC
Port D Data Register
DD–DF
Reserved for Port D
E0 to EF
E0–E7
On Chip Functions and Registers
Reserved for Future Parts
E8
Reserved
E9
MICROWIRE/PLUS Shift Register
EA
Timer Lower Byte
EB
Timer Upper Byte
EC
Timer Autoload Register Lower Byte
Addressing Modes
ED
Timer Autoload Register Upper Byte
EE
CNTRL Control Register
REGISTER INDIRECT
This is the “normal” mode of addressing. The operand is the
memory addressed by the B register or X register.
EF
PSW Register
HC
C
TPND
ENTI
IPND
BIT
7
BUSY
ENI
GIE
BIT
0
F0 to FF
17
On Chip RAM Mapped as Registers
FC
X Register
FD
SP Register
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COP880C
Functional Description
COP880C
Memory Map
(Continued)
Address
FE
Contents
B Register
PU
upper 7 bits of PC
PL
C
lower 8 bits of PC
1-bit of PSW register for carry
HC
Half Carry
GIE 1-bit of PSW register for global interrupt enable
Reading unused memory locations below 7FH will return all
ones. Reading other unused memory locations will return
undefined data.
Symbols
[B]
Memory indirectly addressed by B register
[X]
Memory indirectly addressed by X register
Mem Direct address memory or [B]
MemI Direct address memory or [B] or Immediate data
Imm 8-bit Immediate data
Reg
Register memory: addresses F0 to FF (Includes B, X
and SP)
Bit
Bit number (0 to 7)
←
Loaded with
Instruction Set
REGISTER AND SYMBOL DEFINITIONS
Registers
A
8-bit Accumulator register
B
8-bit Address register
X
8-bit Address register
SP 8-bit Stack pointer register
PC 15-bit Program counter register
↔
Exchanged with
Instruction Set
A ← A + MemI
A ← A + MemI + C, C ← Carry
HC ← Half Carry
ADD
add
ADC
add with carry
SUBC
subtract with carry
A ← A + MemI +C, C ← Carry
HC ← Half Carry
AND
Logical AND
OR
Logical OR
XOR
Logical Exclusive-OR
A ← A and MemI
A ← A or MemI
A ← A xor MemI
IFEQ
IF equal
Compare A and MemI, Do next if A = MemI
IFGT
IF greater than
IFBNE
IF B not equal
Compare A and MemI, Do next if A > MemI
Do next if lower 4 bits of B ≠ Imm
DRSZ
Decrement Reg. ,skip if zero
Reg ← Reg − 1, skip if Reg goes to 0
SBIT
Set bit
1 to bit,
RBIT
Reset bit
0 to bit,
IFBIT
If bit
If bit,
X
Exchange A with memory
LD A
Load A with memory
LD mem
Load Direct memory Immed.
Mem (bit= 0 to 7 immediate)
Mem
Mem is true, do next instr.
LD Reg
Load Register memory Immed.
X
Exchange A with memory [B]
X
Exchange A with memory [X]
LD A
Load A with memory [B]
LD A
Load A with memory [X]
LD M
Load Memory Immediate
CLRA
Clear A
INCA
Increment A
DECA
Decrement A
LAID
Load A indirect from ROM
DCORA
DECIMAL CORRECT A
RRCA
ROTATE A RIGHT THRU C
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A ↔ Mem
A ← MemI
Mem ← Imm
Reg ← Imm
A ↔ [B]
(B ← B ± 1)
A ↔ [X]
(X ← X ± 1)
A ← [B]
(B ← B ± 1)
A ← [X]
(X ← X ± 1)
[B] ← Imm (B ← B ± 1)
A←0
A←A+1
A←A−1
A ← ROM(PU,A)
A ← BCD correction (follows ADC, SUBC)
C → A7 → … → A0 → C
18
COP880C
Instruction Set
(Continued)
Instruction Set (Continued)
SWAPA
A7 … A4 ↔ A3 … A0
C ← 1, HC ← 1
Swap nibbles of A
SC
Set C
RC
Reset C
C ← 0, HC ← 0
IFC
If C
If C is true, do next instruction
IFNC
If not C
JMPL
Jump absolute long
If C is not true, do next instruction
PC ← ii (ii = 15 bits, 0 to 32k)
JMP
Jump absolute
JP
Jump relative short
JSRL
Jump subroutine long
JSR
Jump subroutine
JID
Jump indirect
RET
Return from subroutine
PC11..0 ← i (i = 12 bits)
PC ← PC + r (r is −31 to +32, not 1)
[SP] ← PL,[SP-1] ← PU,SP-2,PC ← ii
[SP] ← PL,[SP-1] ← PU,SP-2,PC11.. 0 ← i
PL ← ROM(PU,A)
RETSK
Return and Skip
RETI
Return from Interrupt
INTR
Generate an interrupt
SP+2,PL ← [SP],PU ← [SP-1]
SP+2,PL ← [SP],PU ← [SP-1],Skip next instruction
SP+2,PL ← [SP],PU ← [SP-1],GIE ← 1
[SP] ← PL,[SP−1] ← PU,SP-2,PC ← 0FF
NOP
No operation
PC ← PC + 1
19
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20
JP−30
JP−29
JP−28
JP−27
JP−26
JP−25
JP−24
JP−23
JP−22
JP−21
JP−20
JP−19
JP−18
JP−17
JP−16
JP−14
JP−13
JP−12
JP−11
JP−10
JP−9
JP−8
JP−7
JP−6
JP−5
JP−4
JP−3
JP−2
JP−1
JP−0
LD 0FF, #i
LD 0FE, #i
LD 0FD, #i
LD 0FC, #i
LD 0FB, #i
LD 0FA, #i
LD 0F9, #i
LD 0F8, #i
LD 0F7, #i
LD 0F6, #i
LD 0F5, #i
LD 0F4, #i
LD 0F3, #i
LD 0F2, #i
LD 0F1, #i
LD 0F0, #i
D
i is the immediate data
JP−31
JP−15
Where,
E
F
Opcode List
*
LD
A,[X]
DIR
LD
Md,#i
LD
A,[X−]
LD
A,[X+]
*
NOP
*
X A,[X]
*
*
X
A,[X−]
X
A,[X+]
*
RRCA
B
LD
[B−],#i
LD
[B+],#i
*
LD A,#i
OR A,#i
XOR
A,#i
AND
A,#i
ADD
A,#i
IFGT
A,#i
IFEQ
A,#i
SUBC
A, #i
ADC
A, #i
9
*
LD
A,[B]
JSRL
*
LD
[B],#i
LD
A,Md
JMPL X A,Md
LD
A,[B−]
LD
A,[B+]
*
*
*
X
A,[B]
JID
LAID
X
A,[B−]
X
A,[B+]
SC
RC
A
8
RETI
RET
CLRA
*
*
*
*
6
LD
B,#0B
LD
B,#0C
LD B,
0D
LD B,
#0E
LD B,
#0F
5
SBIT
7,[B]
SBIT
6,[B]
SBIT
5,[B]
SBIT
4,[B]
SBIT
3,[B]
SBIT
2,[B]
SBIT
1,[B]
SBIT
0,[B]
IFBIT
7,[B]
RBIT
7,[B]
RBIT
6,[B]
RBIT
5,[B]
RBIT
4,[B]
RBIT
3,[B]
RBIT
2,[B]
RBIT
1,[B]
RBIT
0,[B]
*
IFBIT DCORA
6,[B]
IFBNE 9
IFBNE 8
IFBNE 7
IFBNE 6
IFBNE 5
IFBNE 4
IFBNE 3
IFBNE 2
IFBNE 1
IFBNE 0
4
IFBNE 0B
LD B, 0 IFBNE 0F
LD B, 1 IFBNE 0E
LD B, 2 IFBNE 0D
LD B, 3 IFBNE 0C
LD
B,#04
LD B, 5 IFBNE 0A
LD
B,#06
LD B, 7
LD
B,#08
LD
B,#09
IFBIT SWAPA
LD
5,[B]
B,#0A
IFBIT
4,[B]
IFBIT
3,[B]
IFBIT
2,[B]
IFBIT
1, [B]
IFBIT
0, [B]
7
Bits 7–4
* is an unused opcode (see following table)
RETSK
*
DECA
INCA
IFNC
IFC
OR
A,[B]
XOR
A,[B]
AND
A,[B]
ADD
A,[B]
IFGT
A,[B]
IFEQ
A,[B]
SUBC
A, [B]
ADC
A, [B]
Md is a directly addressed memory location
DRSZ
0FF
DRSZ
0FE
DRSZ
0FD
DRSZ
0FC
DRSZ
0FB
DRSZ
0FA
DRSZ
0F9
DRSZ
0F8
DRSZ
0F7
DRSZ
0F6
DRSZ
0F5
DRSZ
0F4
DRSZ
0F3
DRSZ
0F2
DRSZ
0F1
DRSZ
0F0
C
2
1
0
3
2
1
0
8
7
6
5
JSR
JMP
JP+32 JP+16 F
0F00–0FFF 0F00–0FFF
JSR
JMP
JP+31 JP+15 E
0E00–0EFF 0E00–0EFF
JSR
JMP
JP+30 JP+14 D
0D00–0DFF 0D00–0DFF
JSR
JMP
JP+29 JP+13 C
0C00–0CFF 0C00–0CFF
JSR
JMP
JP+28 JP+12 B
0B00–0BFF 0B00–0BFF
JSR
JMP
JP+27 JP+11 A
0A00–0AFF 0A00–0AFF
JSR
JMP
JP+26 JP+10 9
0900–09FF 0900–09FF
JSR
JMP
JP+25 JP+9
0800–08FF 0800–08FF
JSR
JMP
JP+24 JP+8
0700–07FF 0700–07FF
JSR
JMP
JP+23 JP+7
0600–06FF 0600–06FF
JSR
JMP
JP+22 JP+6
0500–05FF 0500–05FF
JSR
JMP
JP+21 JP i 5 4
0400–04FF 0500–05FF
JSR
JMP
JP+20 JP+4
0300–03FF 0300–03FF
JSR
JMP
JP+19 JP+3
0200–02FF 0200–02FF
JSR
JMP
JP+18 JP+2
0100–01FF 0100–01FF
JSR
JMP
JP+17 INTR
0000–00FF 0000–00FF
3
Bits 3–0
COP880C
Instruction Set
(Continued)
Most instructions are single byte (with immediate addressing
mode instruction taking two bytes).
BYTES and CYCLES per
INSTRUCTION
Most single instructions take one cycle time to execute.
Skipped instructions require x number of cycles to be
skipped, where x equals the number of bytes in the skipped
instruction opcode.
The following table shows the number of bytes and cycles for
each instruction in the format of byte/cycle.
Arithmetic and Logic Instructions
[B]
Direct
Immed.
ADD
1/1
3/4
2/2
ADC
1/1
3/4
2/2
SUBC
1/1
3/4
2/2
AND
1/1
3/4
2/2
OR
1/1
3/4
2/2
XOR
1/1
3/4
2/2
IFEQ
1/1
3/4
2/2
IFGT
1/1
3/4
2/2
IFBNE
1/1
DRSZ
1/3
SBIT
1/1
3/4
RBIT
1/1
3/4
IFBIT
1/1
3/4
Memory Transfer Instructions
Register
Indirect
Register Indirect
Direct
[B]
[X]
X A, (Note 24)
1/1
1/3
2/3
LD A, (Note 24)
1/1
1/3
2/3
Immed.
Auto Incr & Decr
[B+, B−]
[X+, X−]
1/2
1/3
1/2
1/3
2/2
LD B,Imm
1/1
(If B < 16)
LD B,Imm
2/3
(If B > 15)
LD Mem,Imm
2/2
3/3
2/2
LD Reg,Imm
2/3
Note 24: = > Memory location addressed by B or X or directly.
Instructions Using A & C
JMP
2/3
1/3
CLRA
1/1
JP
INCA
1/1
JSRL
3/5
DECA
1/1
JSR
2/5
1/3
JID
1/3
1/1
RET
1/5
RRCA
1/1
RETSK
1/5
SWAPA
1/1
RETI
1/5
1/1
INTR
1/7
RC
1/1
NOP
1/1
IFC
1/1
IFNC
1/1
LAID
DCORA
SC
The following table shows the instructions assigned to unused opcodes. This table is for information only. The operations performed are subject to change without notice. Do not
use these opcodes.
Transfer of Control Instructions
JMPL
3/4
21
www.national.com
COP880C
See the BYTES and CYCLES per INSTRUCTION table for
details.
Instruction Execution Time
COP880C
BYTES and CYCLES per
INSTRUCTION (Continued)
Unused
Instruction
Opcode
Unused
•
iceMASTER (IM) IN-CIRCUIT EMULATION
Instruction
The iceMASTER IM-COP8/400 is a full feature, PC based,
in-circuit emulation tool developed and marketed by MetaLink Corporation to support the whole COP8 family of
products. National is a resale vendor for these products.
See Figure 12 for configuration.
Opcode
60
NOP
A9
NOP
61
NOP
AF
62
NOP
B1
LD A, [B]
C → HC
63
NOP
B4
NOP
67
NOP
B5
NOP
8C
RET
B7
X A, [X]
99
NOP
B9
NOP
BF
LD A, [X]
9F
LD [B], #i
A7
X A, [B]
A8
NOP
The iceMASTER IM-COP8/400 with its device specific
COP8 Probe provides a rich feature set for developing,
testing and maintaining product:
•
Real-time in-circuit emulation; full 2.4V–5.5V operation
range, full DC-10 MHz clock. Chip options are programmable or jumper selectable.
•
Direct connection to application board by package compatible socket or surface mount assembly.
•
Full 32 kbyte of loadable programming space that overlays (replaces) the on-chip ROM or EPROM. On-chip
RAM and I/O blocks are used directly or recreated on the
probe as necessary.
•
Full 4k frame synchronous trace memory. Address, instruction, and 8 unspecified, circuit connectable trace
lines. Display can be HLL source (e.g., C source), assembly or mixed.
•
A full 64k hardware configurable break, trace on, trace off
control, and pass count increment events.
•
Tool
set
integrated
interactive
symbolic
debugger — supports both assembler (COFF) and C
Compiler (.COD) linked object formats.
•
Real time performance profiling analysis; selectable
bucket definition.
•
Watch windows, content updated automatically at each
execution break.
•
Instruction by instruction memory/register changes displayed on source window when in single step operation.
•
Single base unit and debugger software reconfigurable to
support the entire COP8 family; only the probe personality needs to change. Debugger software is processor
customized, and reconfigured from a master model file.
•
Processor specific symbolic display of registers and bit
level assignments, configured from master model file.
•
•
Halt/Idle mode notification.
•
Includes a copy of COP8-DEV-IBMA assembler and
linker SDK.
Option List
The mask programmable options are listed out below. The
options are programmed at the same time as the ROM
pattern to provide the user with hardware flexibility to use a
variety of oscillator configuration.
OPTION 1: CKI INPUT
= 1 Crystal (CKI/10) CKO for crystal configuration
= 2 External (CKI/10) CKO available as G7 input
= 3 R/C
(CKI/10) CKO available as G7 input
OPTION 2: BONDING
= 1 44-Pin PLCC
= 2 40-Pin DIP
= 3 28-Pin SO
= 4 28-Pin DIP
The following option information is to be sent to National
along with the EPROM.
Option Data
Option 1 Value__is: CKI Input
Option 2 Value__is: COP Bonding
Development Support
SUMMARY
•
iceMASTER™ : IM-COP8/400 — Full feature in-circuit
emulation for all COP8 products. A full set of COP8 Basic
and Feature Family device and package specific probes
are available.
•
COP8 Debug Module: Moderate cost in-circuit emulation
and development programming unit.
•
COP8
Evaluation
and
Programming
Unit:
EPU-COP880C — low cost In-circuit simulation and development programming unit.
•
Assembler: COP8-DEV-IBMA. A DOS installable cross
development Assembler, Linker, Librarian and Utility Software Development Tool Kit.
•
C Compiler: COP8C. A DOS installable cross development Software Tool Kit.
www.national.com
OTP/EPROM Programmer Support: Covering needs
from engineering prototype, pilot production to full production environments.
22
On-line HELP customized to specific processor using
master model file.
(Continued)
iceMASTER Probe
MHW-880C20DWPC
20 DIP
MHW-880C28DWPC
28 DIP
MHW-880CJ40DWPC
40 DIP
iceMASTER base unit,
MHW-880CJ44PWPC
44 PLCC
110V power supply
DIP to SO Adapters
iceMASTER base unit,
MHW-SOIC20
20 SO
220V power supply
MHW-SOIC28
28 DIP
IM Order Information
Base Unit
IM-COP8/400-1
IM-COP8/400-2
COP880C
Development Support
DS010802-24
FIGURE 12. COP8 iceMASTER Environment
23
www.national.com
COP880C
Development Support
(Continued)
iceMASTER DEBUG MODULE (DM)
The iceMASTER Debug Module is a PC based, combination
in-circuit emulation tool and COP8 based OTP/EPROM programming tool developed and marketed by MetaLink Corporation to support the whole COP8 family of products. National is a resale vendor for these products.
See Figure 13 for configuration.
The iceMASTER Debug Module is a moderate cost development tool. It has the capability of in-circuit emulation for a
specific COP8 microcontroller and in addition serves as a
programming tool for COP8 OTP and EPROM product families. Summary of features is as follows:
•
Real-time in-circuit emulation; full operating voltage
range operation, full DC-10 MHz clock.
•
All processor I/O pins can be cabled to an application
development board with package compatible cable to
socket and surface mount assembly.
•
•
•
•
•
•
Full 32 kbyte of loadable programming space that overlays (replaces) the on-chip ROM or EPROM. On-chip
RAM and I/O blocks are used directly or recreated as
necessary.
•
Debugger software is processor customized, and reconfigured from a master model file.
•
Processor specific symbolic display of registers and bit
level assignments, configured from master model file.
•
•
Halt/Idle mode notification.
•
Programming of 44 PLCC and 68 PLCC parts requires
external programming. adapters.
•
•
Includes wallmount power supply.
•
On-line HELP customized to specific processor using
master model file.
•
Includes a copy of COP8-DEV-IBMA assembler and
linker SDK.
Programming menu supports full product line of programmable OTP and EPROM COP8 products. Program data
is taken directly from the overlay RAM.
On-board VPP generator from 5V input or connection to
external supply supported. Rquires VPP level adjustment
per the family programming specification (correct level is
provided on an on-screen pop-down display).
DM Order Information
Debug Model Unit
100 frames of synchronous trace memory. The display
can be HLL source (C source), assembly or mixed. The
most recent history prior to a break is available in the
trace memory.
COP8-DM/880C
Cable Adapters
Configured break points; uses INTR instruction which is
modestly intrusive.
DM-COP8/20D
20 DIP
DM-COP8/28D
28 DIP
Software — only supported features are selectable.
DM-COP8/40D
40 DIP
Tool
set
integrated
interactive
symbolic
debugger — supports both assembler (COFF) and C
Compiler (.COD) SDK linked object formats.
DM-COP8/44P
44 PLCC
DIP to SO Adapters
Instruction by instruction memory/register changes displayed when in single step operation.
DM-COP8/20D-SO
20 SO
DM-COP8/28D-SO
28 SO
DS010802-25
FIGURE 13. COP8-DM Environment
www.national.com
24
•
Tool
set
integrated
interactive
symbolic
debugger — supports both assembler (COFF) and C
Compiler (.COD) SDK linked object formats.
The iceMASTER EPU-COP880C is a PC based, in-circuit
simulation tool to support the feature family COP8 products.
•
Instruction by instruction memory/register changes displayed when in single step operation.
See Figure 14 for configuration.
•
Processor specific symbolic display of registers and bit
level assignments, configured from master model file.
•
Halt/Idle mode notification. Restart requires special handling.
•
Programming menu supports full product line of programmable OTP and EPROM COP8 products. Only a 40 ZIF
socket is available on the EPU unit. Adapters are available for other part package configurations.
•
Integral wall mount power supply provides 5V and develops the required VPP to program parts.
•
Includes a copy of COP8-DEV-IBMA assembler, linker
SDK.
(Continued)
iceMASTER EVALUATION PROGRAMMING UNIT (EPU)
The simulation capability is a very low cost means of evaluating the general COP8 architecture. In addition, the EPU
has programming capability, with added adapters, for programming the whole COP8 product family of OTP and
EPROM products. The product includes the following features:
•
Non-real-time in-circuit simulation. Program overlay
memory is PC resident; instructions are downloaded over
RS-232 as executed. Approximate performance is
20 kHz.
•
Includes a 40 pin DIP cable adapter. Other target packages are not supported. All processor I/O pins are cabled
to the application development environment.
•
Full 32 kbyte of loadable programmable space that overlays (replaces) the on-chip ROM or EPROM. On-chip
RAM and I/O blocks are used directly or recreated as
necessary.
•
On-chip timer and WATCHDOG execution are not well
synchronized to the instruction simulation.
•
100 frames of synchronous trace memory. The display
can be HLL source (e.g., C source), assembly or mixed.
The most recent history prior to a break is available in the
trace memory.
•
Up to eight software configured break points; uses INTR
instruction which is modestly intrusive.
•
Common look-feel debugger software across all MetaLink products — only supported features are selectable.
EPU Order Information
Evaluation Programming Unit
EPU-COP880C
Evaluation Programming Unit
with debugger and programmer
control software with 40 ZIF
programming socket.
General Programming Adapters
COP8-PGMA-DS
28 and 20 DIP and SOIC adapter
COP8-PGMA-DS44P 28 and 20 DIP and SOIC plus 44
PLCC adapter
DS010802-26
FIGURE 14. EPU-COP8 Tool Environment
25
www.national.com
COP880C
Development Support
COP880C
Development Support
COP8 C COMPILER
(Continued)
A C Compiler is developed and marketed by Byte Craft
Limited. The COP8C compiler is a fully integrated development tool specifically designed to support the compact embedded configuration of the COP8 family of products.
COP8 ASSEMBLER/LINKER SOFTWARE
DEVELOPMENT TOOL KIT
National Semiconductor offers a relocateable COP8 macro
cross assembler, linker, librarian and utility software development tool kit. Features are summarized as follows:
Features are summarized as follows:
• ANSI C with some restrictions and extensions that optimize development for the COP8 embedded application.
• BITS data type extension. Register declaration #pragma
with direct bit level definitions.
• Basic and Feature Family instruction set by “device” type.
• Nested macro capability.
• Extensive set of assembler directives.
• Supported on PC/DOS platform.
• Generates National standard COFF output files.
• Integrated Linker and Librarian.
• Integrated utilities to generate ROM code file outputs.
• DUMPCOFF utility.
This product is integrated as a part of MetaLink tools as a
development kit, fully supported by the MetaLink debugger.
It may be ordered separately or it is bundled with the MetaLink products at no additional cost.
•
•
C language support for interrupt routines.
•
Performs consistency checks against the architectural
definitions of the target COP8 device.
•
•
Generates program memory code.
•
•
Global optimization of linked code.
Expert system, rule based code geration and optimization.
Supports linking of compiled object or COP8 assembled
object formats.
Symbolic debug load format fully sourced level supported
by the MetaLink debugger.
Order Information
INDUSTRY WIDE OTP/EPROM PROGRAMMING
SUPPORT
Programming support, in addition to the MetaLink development tools, is provided by a full range of independent approved vendors to meet the needs from the engineering
laboratory to full production.
Assembler SDK:
COP8-DEV-IBMA Assembler SDK on installable 3.5"
PC/DOS Floppy Disk Drive format.
Periodic upgrades and most recent
version is available on National’s
BBS and Internet.
Approved List
Manufacturer
North
Europe
Asia
America
BP
(800) 225-2102
+49-8152-4183
+852-234-16611
Microsystems
(713) 688-4600
+49-8856-932616
+852-2710-8121
Fax: (713) 688-0920
Data I/O
(800) 426-1045
+44-0734-440011
(206) 881-6444
Call
North America
Fax: (206) 882-1043
HI–LO
(510) 623-8860
Call Asia
+886-2-764-0215
Fax: +886-2-756-6403
ICE
(800) 624-8949
+44-1226-767404
Technology
(919) 430-7915
Fax: 0-1226-370-434
MetaLink
(800) 638-2423
+49-80 9156 96-0
(602) 926-0797
Fax: +49-80 9123 86
+852-737-1800
Fax: (602) 693-0681
Systems
(408) 263-6667
+41-1-9450300
General
Needhams
(916) 924-8037
Fax: (916) 924-8065
www.national.com
+886-2-917-3005
Fax: +886-2-911-1283
26
DIAL-A-HELPER via FTP
(Continued)
ftp nscmicro.nsc.com
AVAILABLE LITERATURE
For more information, please see the COP8 Basic Family
User’s Manual, Literature Number 620895, COP8 Feature
Family User’s Manual, Literature Number 620897 and National’s Family of 8-bit Microcontrollers COP8 Selection
Guide, Literature Number 630009.
anonymous
password:
username @yourhost.site.domain
National Semiconductor on the WorldWide Web
See us on the WorldWide Web at: http://www.national.com
CUSTOMER RESPONSE CENTER
Complete product information and technical support is available from National’s customer response centers.
CANADA/U.S.:
EUROPE:
DIAL-A-HELPER BBS via a Standard Modem
CANADA/U.S.:
user:
DIAL-A-HELPER via WorldWide Web Browser
ftp://nscmicro.nsc.com
DIAL-A-HELPER SERVICE
Dial-A-Helper is a service provided by the Microcontroller
Applications group. The Dial-A-Helper is an Electronic Information System that may be accessed as a Bulletin Board
System (BBS) via data modem, as an FTP site on the
Internet via standard FTP client application or as an FTP site
on the Internet using a standard Internet browser such as
Netscape or Mosaic.
The Dial-A-Helper system provides access to an automated
information storage and retrieval system . The system capabilities include a MESSAGE SECTION (electronic mail,
when accessed as a BBS) for communications to and from
the Microcontroller Applications Group and a FILE SECTION
which consists of several file areas where valuable application software and utilities could be found.
Modem:
Baud:
14.4k
Set-Up:
Length:
8-Bit
Parity:
None
Stop Bit:
1
(800)272-9959
[email protected]
email:
[email protected]
Deutsch Tel:
+49 (0) 180-530 85 85
English Tel:
+49 (0) 180-532 78 32
Français Tel:
+49 (0) 180-532 93 58
+49 (0) 180-534 16 80
JAPAN:
Tel:
+81-043-299-2309
S.E. ASIA:
Beijing Tel:
(+86) 10-6856-8601
(800) 672-6427
(+49) 0-8141-351332
Tel:
email:
Italiano Tel:
(800) NSC-MICRO
EUROPE:
Operation:
COP880C
Development Support
Shanghai Tel:
(+86) 21-6415-4092
Hong Kong Tel:
(+852) 2737-1600
Korea Tel:
(+82) 2-3771-6909
Malaysia Tel:
(+60-4) 644-9061
Singapore Tel:
(+65) 255-2226
Taiwan Tel:
+886-2-521-3288
AUSTRALIA:
Tel:
(+61) 3-9558-9999
INDIA:
Tel:
(+91) 80-559-9467
24 Hours, 7 Days
27
www.national.com
COP880C
Physical Dimensions
inches (millimeters) unless otherwise noted
Small Outline Molded Dual-In-Line Package (M)
Order Number COP882C-XXX/WM, COP982C-XXX/WM, COP682C-XXX/WM or COP982CH-XXX/WM
NS Package Number M20B
Small Outline Molded Dual-In-Line Package (M)
Order Number COP881C-XXX/WM, COP981C-XXX/WM, COP681C-XXX/WM or COP981CH-XXX/WM
NS Package Number M28B
www.national.com
28
COP880C
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
Molded Dual-In-Line Package (N)
Order Number COP882C-XXX/N, COP682C-XXX/N, COP982C-XXX/N or COP982CH-XXX/N
NS Package Number N20B
Molded Dual-In-Line Package (N)
Order Number COP881C-XXX/N, COP681C-XXX/N, COP981C-XXX/N or COP981CH-XXX/N
NS Package Number N28B
29
www.national.com
COP880C
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
Molded Dual-In-Line Package (N)
Order Number COP880C-XXX/N, COP680C-XXX/N, COP980C-XXX/N or COP980CH-XXX/N
NS Package Number N40A
Plastic Leaded Chip Carrier (V)
Order Number COP880C-XXX/V, COP680C-XXX/V, COP980C-XXX/V or COP980CH-XXX/V
NS Package Number V44A
www.national.com
30
COP880C Microcontrollers
Notes
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
National Semiconductor
Corporation
Americas
Email: [email protected]
www.national.com
National Semiconductor
Europe
Fax: +49 (0) 180-530 85 86
Email: [email protected]
Deutsch Tel: +49 (0) 69 9508 6208
English Tel: +44 (0) 870 24 0 2171
Français Tel: +33 (0) 1 41 91 8790
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
National Semiconductor
Asia Pacific Customer
Response Group
Tel: 65-2544466
Fax: 65-2504466
Email: [email protected]
National Semiconductor
Japan Ltd.
Tel: 81-3-5639-7560
Fax: 81-3-5639-7507
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.