COP840CJ Datasheet, PDF (1/36 Pages) National Semiconductor (TI) – 8-Bit Microcontrollers with Multi-Input Wake-Up and Brown Out Detector

OBSOLETE
January 2000
COP840CJ/COP842CJ/COP940CJ/COP942CJ
8-Bit Microcontrollers with Multi-Input Wake-Up and
Brown Out Detector
General Description
The COP840CJ is a member of the COP8™feature family
8-bit microcontroller. It is a fully static Microcontroller, fabri-
cated using double-metal silicon gate microCMOS technol-
ogy. This low cost microcontroller is a complete microcom-
puter 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™ serial
I/O, a 16-bit timer/counter with capture register, a
multi-sourced interrupt, Comparator, WATCHDOG™ Timer,
Modulator/Timer, Brown out detection and Multi Input
Wake-up. Each I/O pin has software selectable options to
adapt the device to the specific application. The device oper-
ates over a voltage range of 2.5V–6.0V. High throughput is
achieved with an efficient, regular instruction set operating at
a 1 ms per instruction rate. Low radiated emissions are
achieved by gradual turn on output drivers and internal I_CC
filters on the chip logic and crystal oscillator.
Features
n Multi-Input wake-up (on the 8-bit Port L)
n Brown out detection
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 Quiet design (low radiated emissions)
n Integrated capacitor for the R/C oscillator
n 2048 bytes of ROM
n 128 bytes of RAM
n Memory mapped I/O
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
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)
Fully Static CMOS
n Low current drain (typically < 1 µA)
n Single supply operation: 2.5V to 6.0V
n Temperature ranges: 0˚C to +70˚C, −40˚C to +85˚C
−55˚C to +125˚C
Development Support
n Emulation and OTP devices
n Real time emulation and full program debug offered by
MetaLink’s development system
TRI-STATE^® is a registered trademark of National Semiconductor Corporation.
WATCHDOG™, MICROWIRE/PLUS™, COP8™, and MICROWIRE™ are trademarks of National Semiconductor Corporation.
iceMASTER™ is a trademark of MetaLink Corporation.
© 2000 National Semiconductor Corporation DS012851
www.national.com