cop888eb National Semiconductor Corporation, cop888eb Datasheet - Page 2

• Manufacturer Part Number: cop888eb
• Description: 8-bit Cmos Rom Based Microcontrollers With 8k Memory, Can Interface, 8-bit A/d, And Usart
• Manufacturer: National Semiconductor Corporation

www.national.com
Basic Functional Description
n CAN I/F — CAN serial bus interface block as described
n Programmable double buffered USART
n A/D — 8-bit, 8 channel, 1-LSB Resolution, with improved
n Multi-Input-Wake-Up (MIWU) — edge selectable wake-up
n Port C — 8-bit bi-directional I/O port
n Port D — 8-bit Output port with high current drive
n Port F — 8-bit bidirectional I/O
n Port G — 8-bit bidirectional I/O port, including alternate
n Port I — 8-bit input port combining either digital input, or
n Port L — 8-bit bidirectional I/O port, including alternate
n Port M — 8-bit I/O port, with the following alternate
Block Diagram
in the CAN specification part 2.0B (Passive)
— Interface rates up to 250k bit/s are supported utilizing
Source Impedance and improved channel to channel
cross talk immunity
and interrupt capability via input port and CAN interface
(Port L, Port M and CAN I/F); supports Wake-Up
capability on SPI, USART, and T2 capture
capability (10 mA)
functions for:
— MICROWIRE
— Timer 1 Input or Output (Depending on mode
— External Interrupt input
— WATCHDOG Output
up to eight A/D input channels
functions for:
— USART Transmit/Receive I/O
— Multi-input-wake up (MIWU on all pins)
function
— SPI Interface
— MIWU
standard message identifiers
selected)
™
Input and Output
FIGURE 1. Block Diagram
2
n Port N — 8-bit bidirectional I/O
n Two 16-bit multi-function Timer counters (T1 and T2)
n Idle timer — Provides a basic time-base counter, (with
n MICROWIRE/PLUS — MICROWIRE serial peripheral
n HALT and IDLE — Software programmable low current
n 8 kBytes ROM and 192 bytes of on board static RAM
n SPI Master/Slave interface includes 12 bytes Transmit
n On board programmable WATCHDOG and CLOCK
Applications
n Automobile Body Control and Comfort System
n Integrated Driver Informaiton Systems
n Steering Wheel Control
n Car Radio Control Panel
n Sensor/Actuator Applications in Automotive and
plus supporting registers
interrupt) and automatic wake up from IDLE mode
programmable
interface, supporting both Master and Slave operation
modes
and 12 bytes Receive FIFO Buffers. Operates up to 1M
Bit/S
Monitor
Industrial Control
— CAN Interface Wake-up (MSB)
— Timer 2 Input or Output (Depending on mode
— SPI Slave Select Expander
— (I/P Capture, PWM and Event Counting)
— HALT — Processor stopped, Minimum current
— IDLE — Processor semi-active more than 60% power
selected)
saving
DS012837-1