
TL/DD11208
C
w
September 1996
COP820CJ/COP822CJ/COP823CJ 8-Bit Microcontroller
with Multi-Input Wake Up and Brown Out Detector
General Description
The COP820CJ is a member of the COP8
TM
8-bit Microcon-
troller family. It is a fully static Microcontroller, fabricated
using double-metal silicon gate microCMOS technology.
This low cost Microcontroller is a complete microcomputer
containing all system timing, interrupt logic, ROM, RAM, and
I/O necessary to implement dedicated control functions in a
variety of applications. Features include an 8-bit memory
mapped architecture, MICROWIRE
TM
serial I/O, a 16-bit
timer/counter with capture register, a multi-sourced inter-
rupt, Comparator, WATCHDOG
TM
Timer, Modulator/Timer,
Brown out protection and Multi-Input Wakeup. Each I/O pin
has software selectable options to adapt the device to the
specific application. The device operates over a voltage
range of 2.5V to 6.0V. High throughput is achieved with an
efficient, regular instruction set operating at a 1
m
s per in-
struction rate.
Key Features
Y
Multi-Input Wake Up (on the 8-bit Port L)
Y
Brown out detector
Y
Analog comparator
Y
Modulator/timer (High speed PWM for IR transmission)
Y
16-bit multi-function timer supporting
D PWM mode
D External event counter mode
D Input capture mode
Y
1024 bytes of ROM
Y
64 bytes of RAM
I/O Features
Y
Memory mapped I/O
Y
Software selectable I/O options (TRI-STATE
é
output,
push-pull output, weak pull-up input, high impedance
input)
Y
High current outputs (8 pins)
Y
Schmitt trigger inputs on Port G
Y
MICROWIRE/PLUS
TM
serial I/O
Y
Packages
D 16 SO with 12 I/O pins
D 20 DIP/SO with 16 I/O pins
D 28 DIP/SO with 24 I/O pins
CPU/Instruction Set Feature
Y
1
m
s instruction cycle time
Y
Three multi-source vectored interrupts servicing
D External interrupt with selectable edge
D Timer interrupt
D Software interrupt
Y
Versatile and easy to use instruction set
Y
8-bit Stack Pointer (SP)Dstack in RAM
Y
Two 8-bit register indirect data memory pointers (B, X)
Fully Static CMOS
Y
Low current drain (typically
k
1
m
A)
Y
Single supply operation: 2.5V to 6.0V
Y
Temperature range:
b
40
§
C to
a
85
§
C
Development Support
Y
Emulation and OTP devices
Y
Real time emulation and full program debug offered by
MetaLink Development System
Block Diagram
TL/DD/11208–1
FIGURE 1. Block Diagram
TRI-STATE
é
is a registered trademark of National Semiconductor Corporation.
COP8
TM
Microcontrollers, MICROWIRE
TM
, MICROWIRE/PLUS
TM
and WATCHDOG
TM
are trademarks of National Semiconductor Corporation.
iceMASTER
TM
is a trademark of MetaLink Corporation.
C
1996 National Semiconductor Corporation
RRD-B30M106/Printed in U. S. A.
http://www.national.com