NSC COP87L20CJ 8-bit cmos otp microcontrollers with 4k or 32k memory and comparator Datasheet

September 1999
COP87LxxCJ/RJ Family
8-Bit CMOS OTP Microcontrollers with 4k or 32k Memory
and Comparator
General Description
The COP87LxxCJ/RJ Family OTP (One Time Programmable) microcontrollers are integrated COP8™ Base core
devices with 4k or 32k memory, and an Analog comparator
(no brownout). These multi-chip CMOS devices are suited
for lower-functionality applications, and as pre-production
devices for a ROM design. Low cost, pin and software compatible (plus Brownout) 1k or 2k ROM versions are available
(COP820CJ/840CJ Family). Versions are available for use
with a range of COP8 software and hardware development
tools.
Family features include an 8-bit memory mapped architecture, 10 MHz CKI with 1µs instruction cycle, three clock op-
tions (-1 = crystal; -2 = external; -3 = internal RC), one multifunction 16-bit timer/counter, MICROWIRE/PLUS™ serial
I/O, one analog comparator, power saving HALT mode with
multi-sourced wakeup/interrupt capability, on-chip R/C oscillator capacitor, high current outputs, software selectable I/O
options, WATCHDOG™ timer, modulator/timer, Power on
Reset, program code security, 2.7V to 5.5V operation and
20/28 pin packages.
In this datasheet, the term COP87L20CJ refers to the
COP87L20CJ, and COP87L22CJ. COP840CJ refers to the
COP87L40CJ,
COP87L42CJ,
COP87L40RJ,
and
COP87L42RJ.
Devices included in this datasheet are:
Device
Memory (bytes)
RAM (bytes)
I/O Pins
Packages
Temperature
COP87L20CJ
4k OTP EPROM
64
24
28 DIP/SOIC
-40 to +85˚C
COP87L22CJ
4k OTP EPROM
64
16
20 DIP/SOIC
-40 to +85˚C
COP87L40CJ
4k OTP EPROM
128
24
28 DIP/SOIC
-40 to +85˚C
COP87L42CJ
4k OTP EPROM
128
16
20 DIP/SOIC
-40 to +85˚C
COP87L40RJ
32k OTP EPROM
128
24
28 DIP/SOIC
-40 to +85˚C
COP87L42RJ
32k OTP EPROM
128
16
20 DIP/SOIC
-40 to +85˚C
Key Features
CPU/Instruction Set Features
n Multi-Input Wakeup (on the 8-bit Port L)
n Analog comparator
n Modulator/Timer (high speed PWM timer for IR
transmission)
n 16-bit multi-function timer supporting
— PWM mode
— External event counter mode
— Input capture mode
n Integrated capacitor for the R/C oscillator
n 4 or 32 kbyte on-board OTP EPROM with security
feature
n 64 or 128 bytes on-chip RAM
n 1 µs instruction cycle time
n Three multi-source interrupts servicing
— External interrupt with selectable edge
— Timer interrupt
— Software interrupt
n Versatile and easy to use instruction set
n 8-bit stack pointer (SP) — stack in RAM
n Two 8-bit Register Indirect Data Memory Pointers (B and
X)
I/O Features
n Software selectable I/O options (TRI-STATE ® , Push-Pull,
Weak Pull-Up Input, High Impedance Input)
n High current outputs (8 pins)
n Schmitt trigger inputs on Port G
n MICROWIRE/PLUS serial I/O
n Packages:
— 20 DIP/SO with 16 I/O pins
— 28 DIP/SO with 24 I/O pins
Fully Static CMOS
n Low current drain (typically < 1 µA)
n Single supply operation: 2.7V to 5.5V
n Temperature range: −40˚C to +85˚C
Development Support
n Emulation device for the COP820CJ/COP840CJ
n Real time emulation and full program debug offered by
MetaLink Development Systems
TRI-STATE ® is a registered trademark of National Semiconductor Corporation.
COP8™, MICROWIRE™, MICROWIRE/PLUS™ and WATCHDOG™ are trademarks of National Semiconductor Corporation.
iceMASTER ® is a registered trademark of MetaLink Corporation.
© 1999 National Semiconductor Corporation
DS012529
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COP87LxxCJ/RJ Family, 8-Bit CMOS OTP Microcontrollers with 4k or 32k Memory and
Comparator
PRELIMINARY
Block Diagram
DS012529-1
FIGURE 1. Block Diagram
Connection Diagrams
DS012529-3
Top View
Order Number
COP87L22CJN (-1N, -2N, -3N), or
COP87L22CJM(-1N, -2N, -3N), or
COP87L42CJN (-1N, -2N, -3N), or
COP87L42CJM (-1N, -2N, -3N), or
COP87L42RJN (-1N, -2N, -3N), or
COP87L42RJM (-1N, -2N, -3N)
See NS Package Number N20A or M20B
DS012529-2
Top View
Order Number
COP87L20CJN (-1N, -2N, -3N), or
COP87L20CJM(-1N, -2N, -3N), or
COP87L40CJN (-1N, -2N, -3N), or
COP87L40CJM (-1N, -2N, -3N), or
COP87L40RJN (-1N, -2N, -3N), or
COP87L40RJM (-1N, -2N, -3N)
See NS Package Number N28B or M28B
FIGURE 2. Connection Diagrams
Note: -1 Crystal Oscillator
N - Brown out disabled
-2 External Oscillator
-3 R/C Oscillator
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2
Pin Assignment
Port
Pin
Typ
ALT
20
28
Funct.
Pin
Pin
L0
I/O
MIWU/CMPOUT
7
11
L1
I/O
MIWU/CMPIN−
8
12
L2
I/O
MIWU/CMPIN+
9
13
L3
I/O
MIWU
10
14
L4
I/O
MIWU
11
15
L5
I/O
MIWU
12
16
L6
I/O
MIWU
13
17
L7
I/O
MIWU/MODOUT
14
18
G0
I/O
INTR
17
25
G1
I/O
18
26
G2
I/O
19
27
G3
I/O
TIO
20
28
G4
I/O
SO
1
1
G5
I/O
SK
2
2
G6
I
SI
3
3
G7
I
CKO
4
I0
I
7
I1
I
8
I2
I
9
I3
I
10
D0
O
19
D1
O
20
D2
O
21
D3
O
4
22
VCC
6
6
GND
15
23
CKI
5
5
RESET
16
24
3
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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
80 mA
80 mA
−65˚C to +150˚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.
7.0V
−0.3V to VCC + 0.3V
DC Electrical Characteristics
−40˚C ≤ TA ≤ +85˚C unless otherwise specified
Parameter
Conditions
Operating Voltage
Power Supply Ripple 1 (Note 2)
Supply Current (Note 3)
CKI = 10 MHz
CKI = 4 MHz
CKI = 4 MHz (COP87L20CJ)
HALT Current (Note 4)
Min
2.7
Peak to Peak
VCC = 5.5V, tc = 1 µs
VCC = 4.5V, tc = 2.5 µs
VCC = 4.0V, tc = 2.5 µs
VCC = 5.5V, CKI = 0 MHz
Typ
Max
Units
5.5
V
0.1 VCC
V
12
mA
6.5
mA
10
mA
12
µA
INPUT LEVELS (VIH, VIL)
Reset, CKI:
Logic High
0.8 VCC
Logic Low
V
0.2 VCC
V
All Other Inputs
Logic High
0.7 VCC
Logic Low
Hi-Z Input Leakage
Input Pullup Current
VCC = 5.5V
VCC = 5.5V
−2
−40
L- and G-Port Hysteresis (Note 7)
V
0.2 VCC
V
+2
µA
−250
µA
0.35 VCC
V
Output Current Levels
D Outputs:
Source
Sink (Note 5)
L4–L7 Output Sink
VCC = 4.5V, VOH = 3.8V
VCC = 4.5V, VOL = 1.0V
VCC = 4.5V, VOL = 2.5V
−0.4
mA
10
mA
15
mA
All Others
Source (Weak Pull-up Mode)
Source (Push-pull Mode)
Sink (Push-pull Mode)
(COP887L20CJ)
VCC = 4.5V, VOH = 3.2V
VCC = 4.5V, VOH = 3.8V
VCC = 4.5V, VOL = 0.4V
−10
−110
µA
−0.4
mA
1.6
mA
VCC = 5.5V, VOL = 0.4V
TRI-STATE Leakage
−2.0
+2.0
µA
D Outputs
15
mA
L4–L7 (Sink)
20
mA
All Others
3
mA
± 100
mA
Allowable Sink/Source
Current Per Pin
Maximum Input Current
Room Temperature
without Latchup (Note 6)
RAM Retention Voltage, Vr
500 ns Rise and
2.0
V
Fall Time (Min)
Input Capacitance
Load Capacitance on D2
7
pF
1000
pF
Note 2: Rate of voltage change must be less than 10 V/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.
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4
DC Electrical Characteristics
(Continued)
Note 4: The HALT mode will stop CKI from oscillating in the RC and crystal configurations by bringing CKI high. HALT test conditions: L, and G0..G5 ports configured
as outputs and set high. The D port set to zero. All inputs tied to VCC. The comparator is disabled.
Note 5: The user must guarantee that D2 pin does not source more than 10 mA during RESET. If D2 sources more than 10 mA during reset, the device will go into
programming mode.
Note 6: Pins G6 and RESET are designed with a high voltage input network. 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.
AC Electrical Characteristics
−40˚C ≤ TA ≤ +85˚C unless otherwise specified
Parameter
Conditions
Min
Typ
Max
Units
Instruction Cycle Time (tc)
Crystal/Resonator
4.5V ≤ VCC ≤ 5.5V
1
DC
µs
R/C Oscillator
4.5V ≤ VCC ≤ 5.5V
fr = Max
2
DC
µs
40
60
%
12
ns
8
ns
CKI Clock Duty Cycle (Note 7)
Rise Time (Note 7)
Fall Time (Note 7)
fr = 10 MHz ext. Clock
fr = 10 MHz ext. Clock
Inputs
tSetup
4.5V ≤ VCC ≤ 5.5V
200
ns
tHold
4.5V ≤ VCC ≤ 5.5V
RL = 2.2k, CL = 100 pF
60
ns
Output Propagation Delay
tPD1, tPD0
SO, SK
4.5V ≤ VCC ≤ 5.5V
0.7
µs
All Others
4.5V ≤ VCC ≤ 5.5V
1
µs
Input Pulse Width
Interrupt Input High Time
1
tc
Interrupt Input Low Time
1
tc
Timer Input High Time
1
tc
Timer Input Low Time
1
tc
MICROWIRE™ Setup Time (tµWS)
20
ns
MICROWIRE Hold Time (tµWH)
56
MICROWIRE Output
ns
220
ns
Propagation Delay (tµPD)
Reset Pulse Width
1
µs
Note 7: Parameter characterized but not production tested.
DS012529-4
FIGURE 3. MICROWIRE/PLUS Timing
5
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G7
Pin Description
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.
There are two registers associated with the L port: a data
register and a configuration register. Therefore, each L I/O
bit can be individually configured under software control as
shown below:
Port L
Port L
Data
0
0
Hi-Z Input (TRI-STATE)
0
1
Input with Weak Pull-up
1
0
Push-pull Zero Output
1
1
Push-pull One Output
Port L
Setup
Port G
Port G
Data
0
0
Hi-Z Input (TRI-STATE)
0
1
Input with Weak Pull-up
1
0
Push-pull Zero Output
1
1
Push-pull One Output
Functional Description
The internal architecture is shown in the block diagram. 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
operations in one cycle time. There are five CPU registers:
A
is the 8-bit Accumulator register
PC is the 15-bit Program Counter register
PU is the upper 7 bits of the program counter (PC)
PL is the lower 8 bits of the program counter (PC)
B
is the 8-bit address register and can be auto incremented or decremented.
X
is the 8-bit alternate address register and can be auto
incremented or decremented.
SP is the 8-bit stack pointer which points to the 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. The SP must be initialized by software before any subroutine call or interrupts occurs.
Port G
Setup
Memory
The memory is separated into two memory spaces: program
and data.
PROGRAM MEMORY
Program memory consists of 4 kbytes of OTP EPROM.
These bytes of ROM may be instructions or constant data.
The memory is addressed by the 15-bit program counter
(PC). ROM can be indirectly read by the LAID instruction for
table lookup.
The device can be configured to inhibit external reads of the
program memory. This is done by programming the Security
Byte.
Three data memory address locations are allocated for this
port, one for data register [00D4], one for configuration register [00D5] and one for the input pins [00D6]. Since G6 and
G7 are Hi-Z 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. Note that the device will be
placed in the Halt mode by writing a “1” to the G7 data bit.
Six pins of Port G have alternate features:
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SK (MICROWIRE clock I/O)
Note: 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 0.8 VCC to prevent the chip from entering special modes. Also
keep the external loading on D2 to less than 1000 pF.
Three data memory address locations are allocated for this
port, one each for data register [00D0], configuration register
[00D1] and the input pins [00D2].
Port L has the following alternate features:
L7 MIWU or MODOUT (high sink current capability)
L6 MIWU (high sink current capability)
L5 MIWU (high sink current capability)
L4 MIWU (high sink current capability)
L3 MIWU
L2 MIWU or CMPIN+
L1 MIWU or CMPIN−
L0 MIWU or CMPOUT
The selection of alternate Port L functions is done through
registers WKEN [00C9] to enable MIWU and CNTRL2
[00CC] to enable comparator and modulator.
All eight L-pins have Schmitt Triggers on their inputs.
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:
Config.
G5
G4 SO (MICROWIRE serial data output)
G3 TIO (timer/counter input/output)
G0 INTR (an external interrupt)
Pins G2 and G1 currently do not have any alternate functions.
The selection of alternate Port G functions are done through
registers PSW [00EF] to enable external interrupt and CNTRL1 [00EE] to select TIO and MICROWIRE operations.
PORT D is a four bit output port that is preset when RESET
goes low. One data memory address location is allocated for
the data register [00DC]. The user can tie two or more D port
outputs (except D2 pin) together in order to get a higher
drive.
PORT I is a 4-bit Hi-Z input port.
PORT L is an 8-bit I/O port.
Config.
G6
CKO crystal oscillator output (selected by mask option)
or HALT restart input/general purpose input (if clock
option is R/C or external clock)
SI (MICROWIRE serial data input)
6
Memory
(Continued)
Data and Configuration
SECURITY FEATURE
Registers for L & G
CLEARED
The memory array has an associate Security Byte that is located outside of the program address range. This byte can
be addressed only from programming mode by a programmer tool.
WATCHDOG Timer
Prescaler/Counter each
loaded with FF
The device comes out of the HALT mode when the RESET
pin is pulled low. In this case, the user has to ensure that the
RESET signal is low long enough to allow the oscillator to restart. An internal 256 tc delay is normally used in conjunction
with the two pin crystal oscillator. When the device comes
out of the HALT mode through Multi-Input Wakeup, this delay allows the oscillator to stabilize.
The following additional actions occur after the device
comes out of the HALT mode through the RESET pin.
If a two pin crystal/resonator oscillator is being used:
Security is an optional feature and can only be asserted after
the memory arrary has been programmed and verified. A secured part will read all 00(hex) by a programmer. The part
will fail Blank Check and will fail Verify operations. A Read
operation will fill the programmer’s memory with 00(hex).
The Security Byte itself is always readable with value of
00(hex) if unsecure and FF(hex) if secure.
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 through B, X and SP registers. The device has 128 bytes of RAM. Sixteen bytes of RAM are
mapped as “registers”, these can be loaded immediately,
decremented and tested. Three specific registers: X, B, and
SP are mapped into this space, the other registers are available for general usage.
Any bit of data memory can be directly set, reset or tested.
All I/O and registers (except A and PC) are memory mapped;
therefore, I/O bits and register bits can be directly and individually set, reset and tested, except the write once only bit
(WDREN, WATCHDOG Reset Enable), and the unused and
read only bits in CNTRL2 and WDREG registers.
RAM Contents
UNCHANGED
Timer T1 and A Contents
UNKNOWN
WATCHDOG Timer Prescaler/Counter
ALTERED
If the external or RC Clock option is being used:
RAM Contents
UNCHANGED
Timer T1 and A Contents
UNCHANGED
WATCHDOG Timer Prescaler/Counter
ALTERED
Note: RAM contents are undefined upon power-up.
Reset
DS012529-5
EXTERNAL RESET
The RESET input pin when pulled low initializes the
micro-controller. The user must insure that the RESET pin is
held low until VCC is within the specified voltage range and
the clock is stabilized. An R/C circuit with a delay 5x greater
than the power supply rise time is recommended (Figure 4).
The device immediately goes into reset state when the RESET input goes low. When the RESET pin goes high the device comes out of reset state synchronously. The device will
be running within two instruction cycles of the RESET pin going high. The following actions occur upon reset:
Port L
TRI-STATE
Port G
TRI-STATE
Port D
HIGH
PC
CLEARED
RAM Contents
RANDOM with Power-On-
B, X, SP
RC > 5 x Power Supply Rise Time
FIGURE 4. Recommended Reset Circuit
WATCHDOG RESET
With WATCHDOG enabled, the WATCHDOG logic resets
the device if the user program does not service the WATCHDOG timer within the selected service window. The WATCHDOG reset does not disable the WATCHDOG. Upon
WATCHDOG reset, the WATCHDOG Prescaler/Counter are
each initialized with FF Hex.
The following actions occur upon WATCHDOG reset that are
different from external reset.
WDREN WATCHDOG Reset Enable bit
UNCHANGED
WDUDF WATCHDOG Underflow bit
UNCHANGED
Additional initialization actions that occur as a result of
WATCHDOG reset are as follows:
Reset
Port L
TRI-STATE
UNAFFECTED with external
Port G
TRI-STATE
Reset (power already
applied)
Port D
HIGH
PC
CLEARED
Same as RAM
Ram Contents
UNCHANGED
B, X, SP
UNCHANGED
PSW, CNTRL1, CNTRL2
and WDREG Reg.
CLEARED
PSW, CNTRL1 and CNTRL2
(except
WKEDG, WKEN
CLEARED
WDUDF Bit) Registers
WKPND
UNKNOWN
Multi-Input Wakeup Reg.
7
CLEARED
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Reset
CRYSTAL OSCILLATOR
(Continued)
Multi-Input Wakeup Registers
WKEDG, WKEN
CLEARED
WKPND
UNKNOWN
By selecting the crystal oscillator option, the G7/CKO pin is
connected as a clock output, CKI and G7/CKO can be connected to make a crystal controlled oscillator. Table 1 shows
the clock frequency for different component values. See Figure 5 for the connections.
Data and Configuration
Registers for L & G
CLEARED
WATCHDOG Timer
Prescalar/Counter
R/C OSCILLATOR
By selecting R/C oscillator option, connecting a resistor from
the CKI pin to VCC makes a R/C oscillator. The capacitor is
on-chip. The G7/CKO pin is available as a general purpose
input G7 and/or HALT control. Adding an external capacitor
will jeopardize the clock frequency tolerance and increase
EMI emissions.
each loaded with FF
Oscillator Circuits
EXTERNAL OSCILLATOR
By selecting the external oscillator option, the CKI pin can be
driven by an external clock signal provided it meets the
specified duty cycle, rise and fall times, and input levels. The
G7/CKO is available as a general purpose input G7 and/or
HALT control.
Table 2 shows the clock frequency for the different resistor
values. The capacitor is on-chip. See Figure 5 for the
connections.
DS012529-6
FIGURE 5. Clock Oscillator Configurations
TABLE 1. Crystal Oscillator Configuration
R1
R2
C1
C2
CKI Freq.
(kΩ)
(MΩ)
(pF)
(pF)
(MHz)
0
1
30
30–36
10
0
1
30
30–36
4
5.6
1
100
100–156
0.455
Conditions
VCC = 5V
VCC = 5V
VCC = 5V
TABLE 2. RC Oscillator Configuration (Part-To-Part Variation) TA = 25˚C
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R
CK1 Freq.
Instr. Cycle
(kΩ)
(MHz)
(µs)
8.2
3.3 ± 10%
3.0 ± 10%
2.2
1.3 ± 10%
7.7 ± 10%
3.9
0.75 ± 10%
13.3 ± 10%
8
Conditions
VCC = 5V
VCC = 5V
VCC = 5V
Halt Mode
MICROWIRE/PLUS
The device is a fully static device. The device enters the
HALT mode by writing a one to the G7 bit of the G data register. Once in the HALT mode, the internal circuitry does not
receive any clock signal and is therefore frozen in the exact
state it was in when halted. In this mode the chip will only
draw leakage current.
The device supports three different methods of exiting the
HALT mode. The first method is with a low to high transition
on the CKO (G7) pin. This method precludes the use of the
crystal clock configuration (since CKO is a dedicated output). It may be used either with an RC clock configuration or
an external clock configuration. The second method of exiting the HALT mode is with the multi-Input Wakeup feature on
the L port. The third method of exiting the HALT mode is by
pulling the RESET input low.
If the two pin crystal/resonator oscillator is being used and
Multi-Input Wakeup causes the device to exit the HALT
mode, the WAKEUP signal does not allow the chip to start
running immediately since crystal oscillators have a delayed
start up time to reach full amplitude and freuqency stability.
The WATCHDOG timer (consisting of an 8-bit prescaler followed by an 8-bit counter) is used to generate a fixed delay
of 256tc to ensure that the oscillator has indeed stabilized
before allowing instruction execution. In this case, upon detecting a valid WAKEUP signal only the oscillator circuitry is
enabled. The WATCHDOG Counter and Prescaler are each
loaded with a value of FF Hex. The WATCHDOG prescaler is
clocked with the tc instruction cycle. (The tc clock is derived
by dividing the oscillator clock down by a factor of 10).
The Schmitt trigger following the CKI inverter on the chip ensures that the WATCHDOG timer is clocked only when the
oscillator has a sufficiently large amplitude to meet the
Schmitt trigger specs. This Schmitt trigger is not part of the
oscillator closed loop. The start-up timeout from the WATCHDOG timer enables the clock signals to be routed to the rest
of the chip. The delay is not activated when the device
comes out of HALT mode through RESET pin. Also, if the
clock option is either RC or External clock, the delay is not
used, but the WATCHDOG Prescaler/-Counter contents are
changed. The Development System will not emulate the
256tc delay.
The RESET pin will cause the device to reset and start executing from address X’0000. A low to high transition on the
G7 pin (if single pin oscillator is used) or Multi-Input Wakeup
will cause the device to start executing from the address following the HALT instruction.
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 6 shows the block diagram of the MICROWIRE/PLUS
interface.
DS012529-7
FIGURE 6. MICROWIRE/PLUS Block Diagram
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. 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.
TABLE 3.
When RESET pin is used to exit the device from the HALT
mode and the two pin crystal/resonator (CKI/CKO) clock option is selected, the contents of the Accumulator and the
Timer T1 are undetermined following the reset. All other information except the WATCHDOG Prescaler/Counter contents is retained until continuing. All information except the
WATCHDOG Prescaler/Counter contents is retained if the
device exits the HALT mode through G7 pin or Multi-Input
Wakeup.
G7 is the HALT-restart pin, but it can still be used as an input.
If the device is not halted, G7 can be used as a general purpose input.
SL1
SL0
0
0
SK Cycle Time
2tc
0
1
4tc
1
x
8tc
where,
tc is the instruction cycle time.
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 device may enter the MICROWIRE/PLUS mode
either as a Master or as a Slave. Figure 7 shows how two device microcontrollers and several peripherals may be interconnected using the MICROWIRE/PLUS arrangement.
Note: To allow clock resynchronization, it is necessary to program two NOP’s
immediately after the device comes out of the HALT mode. The user
must program two NOP’s following the “enter HALT mode” (set G7
data bit) instruction.
Master MICROWIRE/PLUS Operation
In the MICROWIRE/PLUS Master mode of operation the
shift clock (SK) is generated internally by the device. The
MICROWIRE/PLUS Master always initiates all data ex9
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MICROWIRE/PLUS
TABLE 4.
(Continued)
G4
changes (Figure 7). The MSEL bit in the CNTRL register
must be set to enable the SO and SK functions on 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.
G5
Config. Config.
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
on the G Port. The SK pin must be selected as an input and
the SO pin 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.
G4
Fun.
G5
G6
Fun. Fun.
Operation
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
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 7).
DS012529-8
FIGURE 7. MICROWIRE/PLUS Application
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10
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.
Timer/Counter
The device has a powerful 16-bit timer with an associated
16-bit register enabling it 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
TABLE 5. Timer Operating Modes
CNTRL
Timer
Bits
Operation Mode
T Interrupt
Counter
765
On
000
External Counter w/Auto-Load Reg.
Timer Underflow
TIO Pos. Edge
001
External Counter w/Auto-Load Reg.
Timer Underflow
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
as a positive edge or as a negative edge. In this mode the
user can elect to be interrupted on the specified trigger edge
(Figure 9).
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 allows the generation of square-wave outputs or
pulse width modulated outputs under software control (Figure 8).
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 (Figure 8).
DS012529-11
FIGURE 9. Timer Capture Mode Block Diagram
TIMER PWM APPLICATION
Figure 10 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
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.
DS012529-9
FIGURE 8. Timer/Counter Auto
Reload Mode Block Diagram
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
DS012529-12
FIGURE 10. Timer Application
11
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be dedicated for the WATCHDOG or used as a general purpose counter. Figure 11 shows the WATCHDOG timer block
diagram.
WATCHDOG
The device has an on-board 8-bit WATCHDOG timer. The
timer contains an 8-bit READ/WRITE down counter clocked
by an 8-bit prescaler. Under software control the timer can
DS012529-13
FIGURE 11. WATCHDOG Timer Block Diagram
MODE 2: TIMER
In this mode, the prescaler/counter is used as a timer by
keeping the WDREN (WATCHDOG reset enable) bit at 0.
The counter underflow sets the WDUDF (underflow) bit and
the underflow does not reset the device. Loading the 8-bit
counter (load n-1 for n counts) sets the WDTEN bit (WATCHDOG Timer Enable) to “1”, loads the prescaler with FF, and
starts the timer. The counter underflow stops the timer. The
WDTEN bit serves as a start bit for the WATCHDOG timer.
This bit is set when the 8-bit counter is loaded by the user
program. The load could be as a result of WATCHDOG service (WATCHDOG timer dedicated for WATCHDOG function) or write to the counter (WATCHDOG timer used as a
general purpose counter). The bit is cleared upon Brown Out
reset, WATCHDOG reset or external reset. The bit is not
memory mapped and is transparent to the user program.
MODE 1: WATCHDOG TIMER
The WATCHDOG is designed to detect user programs getting stuck in infinite loops resulting in loss of program control
or “runaway” programs. The WATCHDOG can be enabled or
disabled (only once) after the device is reset as a result of
external reset. On power-up the WATCHDOG is disabled.
The WATCHDOG is enabled by writing a “1” to WDREN bit
(resides in WDREG register). Once enabled, the user program should write periodically into the 8-bit counter before
the counter underflows. The 8-bit counter (WDCNT) is
memory mapped at address 0CE Hex. The counter is loaded
with n-1 to get n counts. The counter underflow resets the
device, but does not disable the WATCHDOG. Loading the
8-bit counter initializes the prescaler with FF Hex and starts
the prescaler/counter. Prescaler and counter are stopped
upon counter underflow. Prescaler and counter are each
loaded with FF Hex when the device goes into the HALT
mode. The prescaler is used for crystal/resonator start-up
when the device exits the HALT mode through Multi-Input
Wakeup. In this case, the prescaler/counter contents are
changed.
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CONTROL/STATUS BITS
WDUDF: WATCHDOG Timer Underflow Bit
This bit resides in the CNTRL2 Register. The bit is set when
the WATCHDOG timer underflows. The underflow resets the
device if the WATCHDOG reset enable bit is set (WDREN =
1). Otherwise, WDUDF can be used as the timer underflow
12
WATCHDOG
control can be written to only once (once written to, the hardware does not allow the bit to be changed during program
execution).
WDREN = 1 WATCHDOG reset is enabled.
WDREN = 0 WATCHDOG reset is disabled.
(Continued)
flag. The bit is cleared upon external reset, load to the 8-bit
counter, or going into the HALT mode. It is a read only bit.
WDREN: WD Reset Enable
WDREN bit resides in a separate register (bit 0 of WDREG).
This bit enables the WATCHDOG timer to generate a reset.
The bit is cleared upon external reset. The bit under software
Table 6 shows the impact of WATCHDOG Reset and External Reset on the Control/Status bits.
TABLE 6. WATCHDOG Control/Status
Parameter
HALT
WD
EXT
Counter
Mode
Reset
Reset
Load
8-Bit Prescaler
FF
FF
FF
FF
8-Bit WD Counter
FF
FF
FF
User Value
WDREN Bit
Unchanged
Unchanged
0
No Effect
WDUDF Bit
0
Unchanged
0
0
Unchanged
0
0
1
WDTEN Signal
Modulator/Timer
The Modulator/Timer contains an 8-bit counter and an 8-bit
autoreload register (MODRL address 0CF Hex). The
Modulator/Timer has two modes of operation, selected by
the control bit MC3. The Modulator/Timer Control bits MC1,
MC2 and MC3 reside in CNTRL2 Register.
by software loads the counter with the value of the autoreload register and starts the counter. The counter underflow
toggles the (L7) output pin. The 50% duty cycle signal will be
continuously generated until MC1 is reset by the user program.
MODE 1: MODULATOR
The Modulator is used to generate high frequency pulses on
the modulator output pin (L7). The L7 pin should be configured as an output. The number of pulses is determined by
the 8-bit down counter. Under software control the modulator
input clock can be either CKI or tC. The tC clock is derived by
dividing down the oscillator clock by a factor of 10. Three
control bits (MC1, MC2, and MC3) are used for the
Modulator/Timer output control. When MC2 = 1 and MC3 =
1, CKI is used as the modulator input clock. When MC2 = 0,
and MC3 = 1, tC is used as the modulator input clock. The
user loads the counter with the desired number of counts
(256 max) and sets MC1 to start the counter. The modulator
autoreload register is loaded with n-1 to get n pulses. CKI or
tc pulses are routed to the modulator output (L7) until the
counter underflows (Figure 12). Upon underflow the hardware resets MC1 and stops the counter. The L7 pin goes low
and stays low until the counter is restarted by the user program. The user program has the responsibility to timeout the
low time. Unless the number of counts is changed, the user
program does not have to load the counter each time the
counter is started. The counter can simply be started by setting the MC1 bit. Setting MC1 by software will load the
counter with the value of the autoreload register. The software can reset MC1 to stop the counter.
b. Variable Duty Cycle:
When MC3 = 0 and MC2 = 1, a variable duty cycle PWM signal is generated on the L7 output pin. The counter is clocked
by tC. In this mode the 16-bit timer T1 along with the 8-bit
down counter are used to generate a variable duty cycle
PWM signal. The timer T1 underflow sets MC1 which starts
the down counter and it also sets L7 high (L7 should be configured as an output).When the counter underflows the MC1
control bit is reset and the L7 output will go low until the next
timer T1 underflow. Therefore, the width of the output pulse
is controlled by the 8-bit counter and the pulse duration is
controlled by the 16-bit timer T1 (Figure 14). Timer T1 must
be configured in “PWM Mode/Toggle TIO Out” (CNTRL1 Bits
7,6,5 = 101).
Table 7 shows the different operation modes for the
Modulator/Timer.
TABLE 7. Modulator/Timer Modes
Control Bits in
CNTRL2(00CC)
MODE 2: PWM TIMER
The counter can also be used as a PWM Timer. In this mode,
an 8-bit register is used to serve as an autoreload register
(MODRL).
a. 50% Duty Cycle:
When MC1 is 1 and MC2, MC3 are 0, a 50% duty cycle free
running signal is generated on the L7 output pin (Figure 13).
The L7 pin must be configured as an output pin. In this mode
the 8-bit counter is clocked by tC. Setting the MC1 control bit
Operation Mode
L7 Function
MC3
MC2
MC1
0
0
0
Normal I/O
0
0
1
50% Duty Cycle Mode (Clocked
by tc)
0
1
X
Variable Duty Cycle Mode
(Clocked by tc) Using Timer 1
Underflow
1
0
X
Modulator Mode (Clocked by tc)
1
1
X
Modulator Mode (Clocked by
CKI)
Note: MC1, MC2 and MC3 control bits are cleared upon reset.
13
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Modulator/Timer
(Continued)
Internal Data Bus
DS012529-14
FIGURE 12. Mode 1: Modulator Block Diagram/Output Waveform
DS012529-15
DS012529-16
FIGURE 13. Mode 2a: 50% Duty Cycle Output
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14
Modulator/Timer
(Continued)
DS012529-17
DS012529-18
FIGURE 14. Mode 2b: Variable Duty Cycle Output
(CMPEN = 1, CMPOE = X)
CMPOE Enables comparator output to pin L0
(“1” = enable), CMPEN bit must be set to enable
this function. If CMPEN = 0, L0 will be 0.
The Comparator Select/Control bits are cleared on RESET
(the comparator is disabled). To save power the program
should also disable the comparator before the device enters
the HALT mode.
The user program must set up L0, L1 and L2 ports correctly
for comparator Inputs/Output: L1 and L2 need to be configured as inputs and L0 as output. Table 8 shows the DC and
AC characteristics for the comparator.
Comparator
The device has one differential comparator. Ports L0–L2 are
used for the comparator. The output of the comparator is
brought out to a pin. Port L has the following assignments:
L0 Comparator output
L1 Comparator negative input
L2 Comparator positive input
THE COMPARATOR STATUS/CONTROL BITS
These bits reside in the CNTRL2 Register (Address 0CC)
CMPEN Enables comparator (“1” = enable)
CMPRD Reads comparator output internally
TABLE 8. DC and AC Characteristics (Note 8) 4.5V ≤ VCC ≤ 5.5V, −40˚C ≤ TA ≤ +85˚C
Parameters
Input Offset Voltage
Conditions
Min
0.4V < VIN < VCC −1.5V
Input Common Mode Voltage Range
Typ
Max
Units
± 10
± 25
mV
0.4
Voltage Gain
VCC −1.5
300k
DC Supply Current (when enabled)
VCC = 5.5V
Response Time
TBD mV Step,
V
V/V
250
µA
1
µs
TBD mV Overdrive, 100 pF Load
Note 8: For comparator output current characteristics see L-Port specs.
registers, Reg:WKEN, Reg:WKEDG, and Reg:WKPND are
used in conjunction with the L port to implement the
Multi-Input Wakeup feature.
All three registers Reg:WKEN, Reg:WKPND, and Reg:WKEDG are read/write registers, and are cleared at reset,
except WKPND. WKPND is unknown on reset.
The user can select whether the trigger condition on the selected L Port pin is going to be either a positive edge (low to
high transition) or a negative edge (high to low transition).
Multi-Input Wake Up
The Multi-Input Wakeup feature is used to return (wakeup)
the device from the HALT mode. Figure 15 shows the
Multi-Input Wakeup logic.
This feature utilizes the L Port. The user selects which particular L port bit or combination of L Port bits will cause the
device to exit the HALT mode. Three 8-bit memory mapped
15
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Multi-Input Wake Up
(Continued)
This selection is made via the Reg:WKEDG, which is an 8-bit
control register with a bit assigned to each L Port pin. Setting
the control bit will select the trigger condition to be a negative
edge on that particular L Port pin. Resetting the bit selects
the trigger condition to be a positive edge. Changing an edge
select entails several steps in order to avoid a pseudo
Wakeup condition as a result of the edge change. First, the
associated WKEN bit should be reset, followed by the edge
select change in WKEDG. Next, the associated WKPND bit
should be cleared, followed by the associated WKEN bit being re-enabled.
An example may serve to clarify this procedure. Suppose we
wish to change the edge select from positive (low going high)
to negative (high going low) for L port bit 5, where bit 5 has
previously been enabled for an input. The program would be
as follows:
RBIT 5, WKEN
; Disable MIWU
SBIT 5, WKEDG ; Change edge polarity
RBIT 5, WKPND ; Reset pending flag
SBIT 5, WKEN
; Enable MIWU
If the L port bits have been used as outputs and then
changed to inputs with Multi-Input Wakeup, a safety procedure should also be followed to avoid inherited pseudo
wakeup conditions. After the selected L port bits have been
changed from output to input but before the associated
WKEN bits are enabled, the associated edge select bits in
WKEDG should be set or reset for the desired edge selects,
followed by the associated WKPND bits being cleared. This
same procedure should be used following RESET, since the
L port inputs are left floating as a result of RESET.
The occurrence of the selected trigger condition for
Multi-Input Wakeup is latched into a pending register called
Reg:WKPND. The respective bits of the WKPND register will
be set on the occurrence of the selected trigger edge on the
corresponding Port L pin. The user has the responsibility of
clearing these pending flags. Since the Reg:WKPND is a
pending register for the occurrence of selected wakeup conditions, the device will not enter the HALT mode if any
Wakeup bit is both enabled and pending. Setting the G7 data
bit under this condition will not allow the device to enter the
HALT mode. Consequently, the user has the responsibility of
clearing the pending flags before attempting to enter the
HALT mode.
If a crystal oscillator is being used, the Wakeup signal will not
start the chip running immediately since crystal oscillators
have a finite start up time. The WATCHDOG timer prescaler
generates a fixed delay to ensure that the oscillator has indeed stabilized before allowing the device to execute instructions. In this case, upon detecting a valid Wakeup signal
only the oscillator circuitry and the WATCHDOG timer are
enabled. The WATCHDOG timer prescaler is loaded with a
value of FF Hex (256 counts) and is clocked from the tc instruction cycle clock. The tc clock is derived by dividing down
the oscillator clock by a factor of 10. A Schmitt trigger following the CKI on chip inverter ensures that the WATCHDOG
timer is clocked only when the oscillator has a sufficiently
large amplitude to meet the Schmitt trigger specs. This
Schmitt trigger is not part of the oscillator closed loop. The
startup timeout from the WATCHDOG timer enables the
clock signals to be routed to the rest of the chip.
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DS012529-19
FIGURE 15. Multi-Input Wakeup Logic
INTERRUPTS
The device has a sophisticated interrupt structure to allow
easy interface to the real world. There are three possible 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 carry or timer capture
A non-maskable software/error interrupt on opcode zero
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.
ENI and ENTI bits select external and timer interrupts 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
an 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.
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
16
Multi-Input Wake Up
DETECTION OF ILLEGAL CONDITIONS
The device incorporates 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 tack 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 on the device 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.
(Continued)
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.
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.
DS012529-20
FIGURE 16. Interrupt Block Diagram
Control Registers
IPND External interrupt pending
BUSY MICROWIRE busy shifting flag
ENI
External interrupt enable
GIE
Global interrupt enable (enables interrupts)
The Half-Carry bit is also effected by all the instructions that
effect the Carry flag. The flag values depend upon the instruction. For example, after executing the ADC instruction
the values of the Carry and the Half-Carry flag depend upon
the operands involved. However, instructions like SET C and
RESET C will set and clear both the carry flags. Table *NO
TARGET FOR table NS2079* lists the instructions that effect
the HC and the C flags.
CNTRL1 REGISTER (ADDRESS 00EE)
TC3
TC2
TC1 TRUN
MSEL
IEDG
SL1
Bit 7
SL0
Bit 0
The Timer and MICROWIRE control register contains the following bits:
TC3
Timer T1 Mode Control Bit
TC2
Timer T1 Mode Control Bit
TC1
Timer T1 Mode Control Bit
TRUN
Used to start and stop the timer/counter
(1 = run, 0 = stop)
MSEL
Selects G5 and G4 as MICROWIRE signals
SK and SO respectively
TABLE 9. Instructions Effecting HC and C Flags
IEDG
External interrupt edge polarity select
SL1 and SL0 Select the MICROWIRE clock divide-by
(00 = 2, 01 = 4, 1x = 8)
ADC
Depends on
Operands
Depends on
Operands
PSW REGISTER (ADDRESS 00EF)
SUBC
Depends on
Operands
Depends on
Operands
HC
C
TPND
ENTI
IPND
BUSY
ENI
Instr.
GIE
HC Flag
C Flag
SET C
Set
Set
The PSW register contains the following select bits:
RESET C
Set
Set
HC
Half-Carry Flip/Flop
C
Carry Flip/Flop
TPND Timer T1 interrupt pending
(timer Underflow or capture edge)
RRC
Depends on
Operands
Depends on
Operands
Bit 7
ENTI
Bit 0
Timer T1 interrupt enable
17
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Control Registers
(Continued)
Address
E0 to EF
CNTRL2 REGISTER (ADDRESS 00CC)
MC3 MC2 MC1 CMPEN CMPRD CMPOE WDUDF
R/W
R/W
R/W
R/W
R/O
R/W
Resvd
R/O
Contents
On-Chip Functions and Registers
E0 to E7
Reserved for Future Parts
E8
Reserved
E9
MICROWIRE Shift Register
Modulator/Timer Control Bit
Modulator/Timer Control Bit
EA
Timer Lower Byte
EB
Timer Upper Byte
MC1
Modulator/Timer Control Bit
CMPEN Comparator Enable Bit
CMPRD Comparator Read Bit
EC
Timer1 Autoreload Register Lower Byte
ED
Timer1 Autoreload Register Upper Byte
EE
CNTRL1 Control Register
CMPOE Comparator Output Enable Bit
WDUDF WATCHDOG Timer Underflow Bit (Read Only)
Resvd
This bit is reserved and must be zero
EF
PSW Register
Bit 7
MC3
MC2
Bit 0
WDREG REGISTER (ADDRESS 00CD)
UNUSED
WDREN
Bit 7
Bit 0
On-chip RAM bytes (112 bytes)
30 to 7F
(820CJ)
Unused RAM Address Space (Reads as All
Ones)
70 to 7F
(840CJ)
Unused RAM Address Space (Reads as All
Ones)
80 to BF
Expansion Space for On-Chip EERAM
(Reads Undefined Data)
C0 to C7
Reserved
C8
MIWU Edge Select Register (Reg:WKEDG)
C9
MIWU Enable Register (Reg:WKEN)
CA
MIWU Pending Register (Reg:WKPND)
CB
Reserved
CC
Control2 Register (CNTRL2)
CD
WATCHDOG Register (WDREG)
CE
WATCHDOG Counter (WDCNT)
CF
Modulator Reload (MODRL)
D0
Port L Data Register
D1
Port L Configuration Register
D2
Port L Input Pins (Read Only)
D3
Reserved for Port L
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 to DB
Reserved for Port C
DC
Port D Data Register
DD to DF
Reserved for Port D
www.national.com
SP Register
FE
B Register
OPERAND ADDRESSING MODES
REGISTER INDIRECT
This is the “normal” addressing mode for the chip. The operand is the data memory addressed by the B or X pointer.
REGISTER INDIRECT WITH AUTO POST INCREMENT
OR DECREMENT
This addressing mode is used with the LD and X instructions. The operand is the data memory addressed by the B
or X pointer. This is a register indirect mode that automatically post increments or post decrements the B or X pointer
after executing the instruction.
DIRECT
The instruction contains an 8-bit address field that directly
points to the data memory for the operand.
IMMEDIATE
The instruction contains an 8-bit immediate field as the operand.
SHORT IMMEDIATE
This addressing mode issued with the LD B,# instruction,
where the immediate # is less than 16. The instruction contains a 4-bit immediate field as the operand.
INDIRECT
This addressing mode is used with the LAID instruction. The
contents of the accumulator are used as a partial address
(lower 8 bits of PC) for accessing a data operand from the
program memory.
Contents
00 to 6F
(840CJ)
FD
There are ten addressing modes, six for operand addressing
and four for transfer of control.
All RAM, ports and registers (except A and PC) are mapped
into data memory address space.
On-chip RAM bytes (48 bytes)
X Register
Addressing Modes
Memory Map
00 to 2F
(820CJ)
On-Chip RAM Mapped as Registers
FC
Reading other unused memory locations will return undefined data.
WDREN WATCHDOG Reset Enable Bit (Write Once Only)
Address
F0 to FF
TRANSFER OF CONTROL ADDRESSING MODES
RELATIVE
This mode is used for the JP instruction with the instruction
field being added to the program counter to produce the next
instruction address. JP has a range from −31 to +32 to allow
a one byte relative jump (JP + 1 is implemented by a NOP instruction). There are no “blocks” or “pages” when using JP
since all 15 bits of the PC are used.
ABSOLUTE
18
Addressing Modes
(Continued)
This mode is used with the JMP and JSR instructions with
the instruction field of 12 bits replacing the lower 12 bits of
the program counter (PC). This allows jumping to any location in the current 4k program memory segment.
ABSOLUTE LONG
This mode is used with the JMPL and JSRL instructions with
the instruction field of 15 bits replacing the entire 15 bits of
the program counter (PC). This allows jumping to any location up to 32k in the program memory space.
INDIRECT
This mode is used with the JID instruction. The contents of
the accumulator are used as a partial address (lower 8 bits of
PC) for accessing a location in the program memory. The
contents of this program memory location serves as a partial
address (lower 8 bits of PC) for the jump to the next instruction.
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
PU upper 7 bits of PC
PL lower 8 bits of PC
C
1-bit of PSW register for carry
HC Half Carry
GIE 1-bit of PSW register for global interrupt enable
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
↔
Exchanged with
19
www.national.com
Instruction Set
(Continued)
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
AND
Logical AND
HC ← Half Carry
A ← A and MemI
OR
Logical OR
XOR
Logical Exclusive-OR
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
DRSZ
Decrement Reg. ,skip if zero
SBIT
Set bit
Compare A and MemI, Do next if A > MemI
Do next if lower 4 bits of B ≠ Imm
Reg ← Reg − 1, skip if Reg goes to 0
1 to bit, Mem (bit = 0 to 7 immediate)
RBIT
Reset bit
0 to bit, Mem
IFBIT
If bit
X
Exchange A with memory
LD A
Load A with memory
If bit, Mem is true, do next instr.
A ↔ Mem
A ← MemI
LD mem
Load Direct memory Immed.
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
Mem ← Imm
Reg ← Imm
A ↔ [B]
A ↔ [X]
A ← [B]
(B ← B ± 1)
(X ← X ± 1)
(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
A7 … A4 ↔ A3 … A0
C ← 1, HC ← 1
C ← 0, HC ← 0
SWAPA
Swap nibbles of A
SC
Set C
RC
Reset C
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
RETSK
Return and Skip
RETI
Return from Interrupt
INTR
Generate an interrupt
NOP
No operation
www.national.com
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)
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
PC ← PC + 1
20
21
www.national.com
JP−18
JP−17
JP−16
JP−2
JP−1
JP−0
C
DRSZ
0F0
DRSZ
0F1
DRSZ
0F2
DRSZ
0F3
DRSZ
0F4
DRSZ
0F5
DRSZ
0F6
DRSZ
0F7
DRSZ
0F8
DRSZ
0F9
DRSZ
0FA
DRSZ
0FB
DRSZ
0FC
DRSZ
0FD
DRSZ
0FE
DRSZ
0FF
D
LD 0F0, #i
LD 0F1,#i
LD 0F2,#i
LD 0F3,#i
LD 0F4,#i
LD 0F5,#i
LD 0F6,#i
LD 0F7,#i
LD 0F8,#i
LD 0F9,#i
LD 0FA,#i
LD 0FB,#i
LD 0FC,#i
LD 0FD,#i
LD 0FE,#i
LD 0FF,#i
where,
i is the immediate data
Md is a directly addressed memory location
* is an unused opcode (see following table)
JP−19
JP−3
JP−24
JP−8
JP−20
JP−25
JP−9
JP−4
JP−26
JP−10
JP−21
JP−27
JP−11
JP−5
JP−28
JP−12
JP−22
JP−29
JP−13
JP−6
JP−30
JP−14
JP−23
JP−31
JP−15
JP−7
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 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
LD
A,[B−] [B−],#i
LD
LD
A,[B+] [B+],#i
*
*
*
X
A,[B]
JID
LAID
X
A,[B−]
X
A,[B+]
SC
RC
A
RETI
RET
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]
8
CLRA
*
*
*
*
6
5
LD
B,0A
LD
B,0B
LD
B,0C
LD
B,0D
LD
B,0E
LD
B,0F
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]
*
LD B,0
LD B,1
LD B,2
LD B,3
LD B,4
LD B,5
LD B,6
LD B,7
LD B,8
IFBIT DCORA LD B,9
6,[B]
IFBIT SWAPA
5,[B]
IFBIT
4,[B]
IFBIT
3,[B]
IFBIT
2,[B]
IFBIT
1,[B]
IFBIT
0,[B]
7
Bits 7–4
4
IFBNE
0F
IFBNE
0E
IFBNE
0D
IFBNE
0C
IFBNE
0B
IFBNE
0A
IFBNE 9
IFBNE 8
IFBNE 7
IFBNE 6
IFBNE 5
IFBNE 4
IFBNE 3
IFBNE 2
IFBNE 1
IFBNE 0
3
2
1
JP+26
JP+25
JP+24
JP+23
JP+22
JP+21
JP+20
JP+19
JP+18
JP+17
JSR
JMP
JP+32
0F00–0FFF 0F00–0FFF
JSR
JMP
JP+31
0E00–0EFF 0E00–0EFF
JSR
JMP
JP+30
0D00–0DFF 0D00–0DFF
JSR
JMP
JP+29
0C00–0CFF 0C00–0CFF
JSR
JMP
JP+28
0B00–0BFF 0B00–0BFF
JSR
JMP
JP+27
0A00–0AFF 0A00–0AFF
JSR
JMP
0900–09FF 0900–09FF
JSR
JMP
0800–08FF 0800–08FF
JSR
JMP
0700–07FF 0700–07FF
JSR
JMP
0600–06FF 0600–06FF
JSR
JMP
0500–05FF 0500–05FF
JSR
JMP
0400–04FF 0400–04FF
JSR
JMP
0300–03FF 0300–03FF
JSR
JMP
0200–02FF 0200–02FF
JSR
JMP
0100–01FF 0100–01FF
JSR
JMP
0000–00FF 0000–00FF
0
B
A
9
8
7
6
5
4
3
2
1
0
JP+16
JP+15
F
E
JP+14 D
JP+13 C
JP+12
JP+11
JP+10
JP+9
JP+8
JP+7
JP+6
JP+5
JP+4
JP+3
JP+2
INTR
Bits 3–0
See the BYTES and CYCLES per INSTRUCTION table for
details.
Instruction Execution Time
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 Instructions (Bytes/Cycles)
[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
RBIT
1/1
3/4
3/4
IFBIT
1/1
3/4
Memory Transfer Instructions (Bytes/Cycles)
Register
Register Indirect
Indirect
Direct
[B]
[X]
X A,*
1/1
1/3
2/3
LD A,*
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
3/3
2/2
LD Reg,Imm
* =
2/3
> Memory location addressed by B or X or directly.
Instructions Using A & C
Instructions
Transfer of Control Instructions
Bytes/Cycles
Instructions
Bytes/Cycles
CLRA
1/1
JMPL
3/4
INCA
1/1
JMP
2/3
DECA
1/1
JP
1/3
LAID
1/3
JSRL
3/5
DCORA
1/1
JSR
2/5
RRCA
1/1
JID
1/3
SWAPA
1/1
RET
1/5
SC
1/1
RETSK
1/5
RC
1/1
RETI
1/5
IFC
1/1
INTR
1/7
IFNC
1/1
NOP
1/1
www.national.com
22
Development Tools Support
OVERVIEW
National is engaged with an international community of independent 3rd party vendors who provide hardware and software development tool support. Through National’s interaction and guidance, these tools cooperate to form a choice of
solutions that fits each developer’s needs.
This section provides a summary of the tool and development kits currently available. Up-to-date information, selection guides, free tools, demos, updates, and purchase information can be obtained at our web site at:
www.national.com/cop8.
SUMMARY OF TOOLS
COP8 Evaluation Tools
•
COP8–NSEVAL: Free Software Evaluation package for
Windows. A fully integrated evaluation environment for
COP8, including versions of WCOP8 IDE (Integrated Development Environment), COP8-NSASM, COP8-MLSIM,
COP8C, DriveWay™ COP8, Manuals, and other COP8
information.
•
COP8C: Moderately priced C Cross-Compiler and Code
Development System from Byte Craft (no code limit). Includes BCLIDE (Byte Craft Limited Integrated Development Environment) for Win32, editor, optimizing C CrossCompiler, macro cross assembler, BC-Linker, and
MetaLink tools support. (DOS/SUN versions available;
Compiler is installable under WCOP8 IDE; Compatible
with DriveWay COP8).
•
EWCOP8-KS: Very Low cost ANSI C-Compiler and Embedded Workbench from IAR (Kickstart version:
COP8Sx/Fx only with 2k code limit; No FP). A fully integrated Win32 IDE, ANSI C-Compiler, macro assembler,
editor, linker, Liberian, C-Spy simulator/debugger, PLUS
MetaLink EPU/DM emulator support.
•
EWCOP8-AS: Moderately priced COP8 Assembler and
Embedded Workbench from IAR (no code limit). A fully integrated Win32 IDE, macro assembler, editor, linker, librarian, and C-Spy high-level simulator/debugger with
I/O and interrupts support. (Upgradeable with optional
C-Compiler and/or MetaLink Debugger/Emulator support).
•
EWCOP8-BL: Moderately priced ANSI C-Compiler and
Embedded Workbench from IAR (Baseline version: All
COP8 devices; 4k code limit; no FP). A fully integrated
Win32 IDE, ANSI C-Compiler, macro assembler, editor,
linker, librarian, and C-Spy high-level simulator/debugger.
(Upgradeable; CWCOP8-M MetaLink tools interface support optional).
EWCOP8: Full featured ANSI C-Compiler and Embedded Workbench for Windows from IAR (no code limit). A
fully integrated Win32 IDE, ANSI C-Compiler, macro assembler, editor, linker, librarian, and C-Spy high-level
simulator/debugger. (CWCOP8-M MetaLink tools interface support optional).
•
COP8–MLSIM: Free Instruction Level Simulator tool for
Windows. For testing and debugging software instructions only (No I/O or interrupt support).
•
COP8–EPU: Very Low cost COP8 Evaluation & Programming Unit. Windows based evaluation and
hardware-simulation tool, with COP8 device programmer
and erasable samples. Includes COP8-NSDEV, Driveway COP8 Demo, MetaLink Debugger, I/O cables and
power supply.
•
COP8–EVAL-ICUxx: Very Low cost evaluation and design test board for COP8ACC and COP8SGx Families,
from ICU. Real-time environment with add-on A/D, D/A,
and EEPROM. Includes software routines and reference
designs.
•
•
Manuals, Applications Notes, Literature: Available free
from our web site at: www.national.com/cop8.
COP8 Integrated Software/Hardware Design Development Kits
EWCOP8-M: Full featured ANSI C-Compiler and Embedded Workbench for Windows from IAR (no code limit). A
fully integrated Win32 IDE, ANSI C-Compiler, macro assembler, editor, linker, librarian, C-Spy high-level
simulator/debugger, PLUS MetaLink debugger/hardware
interface (CWCOP8-M).
COP8 Productivity Enhancement Tools
•
•
WCOP8 IDE: Very Low cost IDE (Integrated Development Environment) from KKD. Supports COP8C, COP8NSASM, COP8-MLSIM, DriveWay COP8, and MetaLink
debugger under a common Windows Project Management environment. Code development, debug, and emulation tools can be launched from the project window
framework.
•
DriveWay-COP8: Low cost COP8 Peripherals Code
Generation tool from Aisys Corporation. Automatically
generates tested and documented C or Assembly source
code modules containing I/O drivers and interrupt handlers for each on-chip peripheral. Application specific
code can be inserted for customization using the integrated editor. (Compatible with COP8-NSASM, COP8C,
and WCOP8 IDE.)
•
COP8-UTILS: Free set of COP8 assembly code examples, device drivers, and utilities to speed up code development.
•
COP8-MLSIM: Free Instruction Level Simulator tool for
Windows. For testing and debugging software instructions only (No I/O or interrupt support).
•
COP8-EPU: Very Low cost Evaluation & Programming
Unit. Windows based development and hardwaresimulation tool for COPSx/xG families, with COP8 device
programmer and samples. Includes COP8-NSDEV,
Driveway COP8 Demo, MetaLink Debugger, cables and
power supply.
•
COP8-DM: Moderate cost Debug Module from MetaLink.
A Windows based, real-time in-circuit emulation tool with
COP8 device programmer. Includes COP8-NSDEV,
DriveWay COP8 Demo, MetaLink Debugger, power supply, emulation cables and adapters.
COP8 Development Languages and Environments
•
•
COP8-NSASM: Free COP8 Assembler v5 for Win32.
Macro assembler, linker, and librarian for COP8 software
development. Supports all COP8 devices. (DOS/Win16
v4.10.2 available with limited support). (Compatible with
WCOP8 IDE, COP8C, and DriveWay COP8).
COP8-NSDEV: Very low cost Software Development
Package for Windows. An integrated development environment for COP8, including WCOP8 IDE, COP8NSASM, COP8-MLSIM.
23
www.national.com
Development Tools Support
COP8 Device Programmer Support
• MetaLink’s EPU and Debug Module include development
device programming capability for COP8 devices.
• Third-party programmers and automatic handling equipment cover needs from engineering prototype and pilot
production, to full production environments.
• Factory programming available for high-volume requirements.
(Continued)
COP8 Real-Time Emulation Tools
• COP8-DM: MetaLink Debug Module. A moderately
priced real-time in-circuit emulation tool, with COP8 device programmer. Includes COP8-NSDEV, DriveWay
COP8 Demo, MetaLink Debugger, power supply, emulation cables and adapters.
• IM-COP8: MetaLink iceMASTER ® . A full featured, realtime in-circuit emulator for COP8 devices. Includes MetaLink Windows Debugger, and power supply. Packagespecific probes and surface mount adaptors are ordered
separately.
TOOLS ORDERING NUMBERS FOR THE COP87L20CJ/COP87L40CJ FAMILY DEVICES
Vendor
National
Tools
COP8-NSEVAL
Cost
Free
Notes
Web site download
COP8-NSASM
COP8-NSASM
Free
Included in EPU and DM. Web site download
COP8-MLSIM
COP8-MLSIM
Free
Included in EPU and DM. Web site download
COP8-NSDEV
COP8-NSDEV
VL
Included in EPU and DM. Order CD from website
COP8-EPU
Not available for this device
COP8-DM
Contact MetaLink
Development
Devices
COP87L20/40CJxx
COP87L22/42CJxx
VL
4k or 32k OTP devices. No windowed devices
OTP
Programming
Adapters
COP8SA-PGMA
L
For programming 16/20/28 SOIC and 44 PLCC on the
EPU
COP8-PGMA-44QFP
L
For programming 44QFP on any programmer
COP8-PGMA-28CSP
L
For programming 28CSP on any programmer
COP8-PGMA-28SO
VL
For programming 16/20/28 SOIC on any programmer
IM-COP8
MetaLink COP8-EPU
Contact MetaLink
Not available for this device
COP8-DM
DM4-COP8-840CJ (10
MHz), plus PS-10, plus
DM-COP8/xxx (ie. 28D)
M
Included p/s (PS-10), target cable of choice (DIP or
PLCC; i.e. DM-COP8/28D), 16/20/28/40 DIP/SO and
44 PLCC programming sockets. Add OTP adapter (if
needed) and target adapter (if needed)
DM Target
Adapters
MHW-CONVxx (xx = 33,
34 etc.)
L
DM target converters for
16DIP/20/SO/28SO/44QFP/28CSP; (MHW-CNV38 for
20 pin DIP to SO package converter)
OTP
Programming
Adapters
MHW-COP8-PGMA-DS
L
For programming 16/20/28 SOIC and 44 PLCC on the
EPU
IM-COP8
IM-COP8-AD-464 (-220)
(10 MHz maximum)
H
Base unit 10 MHz; -220 = 220V; add probe card
(required) and target adapter (if needed); included
software and manuals
PC-840CJxxDW-AD-10
(xx = 20 or 28)
M
10 MHz 20 or 28 DIP probe card; 2.5V to 6.0V
MHW-SOICxx (xx = 16,
20, 28)
L
16 or 20 or 28 pin SOIC adapter for probe card
Included in EPU and DM
IM Probe Target
Adapter
ICU or
National
Order Number
COP8-NSEVAL
COP8-EVAL-ICUxx Not available for this device
KKD
WCOP8-IDE
WCOP8-IDE
VL
IAR
EWCOP8-xx
See summary above
L-H
Included all software and manuals
Byte
Craft
COP8C
COP8C
M
Included all software and manuals
Aisys
DriveWay COP8
DriveWay COP8
L
Included all software and manuals
www.national.com
24
Development Tools Support
OTP Programmers
(Continued)
Contact vendor
L-H
For approved programmer listings and vendor
information, go to our OTP support page at:
www.national.com/cop8
Cost: Free; VL = < $100; L = $100 - $300; M = $300 - $1k; H = $1k - $3k; VH = $3k - $5k
WHERE TO GET TOOLS
Tools are ordered directly from the following vendors. Please go to the vendor’s web site for current listings of distributors.
Vendor
Aisys
Home Office
Electronic Sites
U.S.A.: Santa Clara, CA
www.aisysinc.com
1-408-327-8820
[email protected]
Other Main Offices
Distributors
fax: 1-408-327-8830
Byte Craft
U.S.A.
www.bytecraft.com
1-519-888-6911
info @bytecraft.com
Distributors
fax: 1-519-746-6751
IAR
Sweden: Uppsala
www.iar.se
U.S.A.: San Francisco
+46 18 16 78 00
[email protected]
1-415-765-5500
fax: +46 18 16 78 38
[email protected]
fax: 1-415-765-5503
[email protected]
U.K.: London
[email protected]
+44 171 924 33 34
fax: +44 171 924 53 41
Germany: Munich
+49 89 470 6022
fax: +49 89 470 956
ICU
Sweden: Polygonvaegen
www.icu.se
Switzeland: Hoehe
+46 8 630 11 20
[email protected]
+41 34 497 28 20
fax: +46 8 630 11 70
support @icu.ch
fax: +41 34 497 28 21
KKD
Denmark:
www.kkd.dk
MetaLink
U.S.A.: Chandler, AZ
www.metaice.com
Germany: Kirchseeon
1-800-638-2423
sales @metaice.com
80-91-5696-0
fax: 1-602-926-1198
support @metaice.com
fax: 80-91-2386
National
bbs: 1-602-962-0013
[email protected]
www.metalink.de
Distributors Worldwide
U.S.A.: Santa Clara, CA
www.national.com/cop8
Europe: +49 (0) 180 530 8585
1-800-272-9959
support @nsc.com
fax: +49 (0) 180 530 8586
fax: 1-800-737-7018
europe.support @nsc.com
Distributors Worldwide
Customer Support
The following companies have approved COP8 programmers in a variety of configurations. Contact your local office
or distributor. You can link to their web sites and get the latest listing of approved programmers from National’s COP8
OTP Support page at: www.national.com/cop8.
Complete product information and technical support is available from National’s customer response centers, and from
our on-line COP8 customer support sites.
Advantech; Advin; BP Microsystems; Data I/O; Hi-Lo Systems; ICE Technology; Lloyd Research; Logical Devices;
MQP; Needhams; Phyton; SMS; Stag Programmers; System General; Tribal Microsystems; Xeltek.
25
www.national.com
Physical Dimensions
inches (millimeters) unless otherwise noted
20-Lead Surface Mount Package (M)
Order Number COP87L22CJM (-1B, -1N, -2B, -2N, -3B, -3N), or
Order Number COP87L42CJM (-1B, -1N, -2B, -2N, -3B, -3N), or
Order Number COP87L42RJM (-1B, -1N, -2B, -2N, -3B, -3N)
NS Package Number M20B
www.national.com
26
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
20-Lead Molded Dual-In-Line Package (N)
Order Number COP87L22CJN (-1N, -2N, -3N), or
Order Number COP87L42CJN (-1N, -2N, -3N), or
Order Number COP87L42RJN (-1N, -2N, -3N)
NS Package Number N20A
28-Lead Molded Dual-In-Line Package (M)
Order Number COP87L20CJM (-1N, -2N, -3N), or
Order Number COP87L40CJM (-1N, -2N, -3N), or
Order Number COP87L40RJM (-1N, -2N, -3N)
NS Package Number M28B
27
www.national.com
COP87LxxCJ/RJ Family, 8-Bit CMOS OTP Microcontrollers with 4k or 32k Memory and
Comparator
Physical Dimensions
inches (millimeters) unless otherwise noted (Continued)
28-Lead Molded Dual-In-Line Package (N)
Order Number COP87L20CJN (-1N, -2N, -3N), or
Order Number COP87L40CJN (-1N, -2N, -3N), or
Order Number COP87L40RJN (-1N, -2N, -3N)
NS Package Number N28B
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
Tel: 1-800-272-9959
Fax: 1-800-737-7018
Email: [email protected]
www.national.com
National Semiconductor
Europe
Fax: +49 (0) 1 80-530 85 86
Email: [email protected]
Deutsch Tel: +49 (0) 1 80-530 85 85
English Tel: +49 (0) 1 80-532 78 32
Français Tel: +49 (0) 1 80-532 93 58
Italiano Tel: +49 (0) 1 80-534 16 80
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.