
COP884BC/COP885BC
8-Bit CMOS ROM Based Microcontrollers with 2k
Memory, Comparators, and CAN Interface
General Description
The COP884BC ROM based microcontrollers are highly in-
tegrated COP8
Feature core devices with 2k memory and
advanced features including a CAN 2.0B (passive) interface
and two Analog comparators. These single-chip CMOS de-
vices are suited for applications requiring a full featured con-
troller with a CAN interface, low EMI, and an 8-bit 39 kHz
PWM timer. COP87L84BC devices are pin and software
compatible 16k OTP (One Time Programmable) versions for
pre-production, and for use with a range of COP8 software
and hardware development tools.
Features include an 8-bit memory mapped architecture, 10
MHz CKI (crystal osc) with 1μs instruction cycle, one multi-
function 16-bit timer/counter, 8-bit 39 kHz PWM timer with 2
outputs, CAN 2.0B (passive) interface, MICROWIRE/
PLUS
serial I/O, two Analog comparators, two power sav-
ing HALT/IDLE modes, idle timer, MIWU, software selectable
I/O options, Power on Reset, low EMI 4.5V to 5.5V opera-
tion, and 20/28 pin packages.
Note: A companion device with CAN interface, more I/O and
memory, A/D, and USART is the COP888EB.
Devices included in this datasheet are:
Device
COP684BC
COP884BC
COP685BC
COP885BC
Memory (bytes)
2k ROM
2k ROM
2k ROM
2k ROM
RAM (bytes)
64
64
64
64
I/O Pins
18
18
10
10
Packages
28 SOIC
28 SOIC
20 SOIC
20 SOIC
Temperature
-55 to +125C
-40 to +85C
-55 to +125C
-40 to +85C
Key Features
n
CAN 2.0B (passive) Interface
n
Power On Reset (selectable)
n
One 16-bit timer, with two 16-bit registers supporting:
— Processor Independent PWM mode
— External Event counter mode
— Input Capture mode
n
High speed, constant resolution 8-bit PWM/frequency
monitor timer with 2 output pins
n
2048 bytes on-board ROM
n
64 bytes on-board RAM
Additional Peripheral Features
n
Idle Timer
n
Multi-Input Wake Up (MIWU) with optional interrupts (7)
n
Two analog comparators
n
MICROWIRE/PLUS serial I/O
I/O Features
n
Memory mapped I/O
n
Software selectable I/O options (TRI-STATE
Output,
Push-Pull Output, Weak Pull-Up Input, High Impedance
Input)
n
Schmitt trigger inputs on ports G and L
n
Packages: 28 SO with 18 I/O pins and 20 SO with 10
I/O pins
CPU/Instruction Set Features
n
1 μs instruction cycle time
n
Eleven multi-source vectored interrupts servicing
— External Interrupt
— Idle Timer T0
— Timer T1 (with 2 Interrupts)
— MICROWIRE/PLUS
— Multi-Input Wake Up
— Software Trap
— PWM Timer
— CAN Interface (with 3 interrupts)
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
Two power saving modes: HALT and IDLE
n
Low current drain (typically
<
1 μA)
n
Single supply operation: 4.5V–5.5V
n
Temperature ranges: 40C to +85C, 55C to +125C
Development Support
n
Emulation and OTP devices
n
Real time emulation and full program debug offered by
MetaLink Development Systems
COP8
, and MICROWIRE/PLUS
are trademarks of National Semiconductor Corporation.
TRI-STATE
is a registered trademark of National Semiconductor Corporation.
iceMASTER
is a registered trademark of MetaLink Corporation.
September 1999
C
a
2000 National Semiconductor Corporation
DS012067
www.national.com