August 1996
COP8780C/COP8781C/COP8782C
8-Bit One-Time Programmable (OTP) Microcontroller
Y
Schmitt trigger inputs on Port G
General Description
The COP8780C, COP8781C and COP8782C are members
Y
MICROWIRE/PLUS serial I/O
Y
Packages:
of the COPSTM 8-bit microcontroller family. They are fully
Ð 44 PLCC, OTP, Emulates COP880C, 36 I/O pins
static microcontrollers, fabricated using double-metal, dou-
Ð 40 DIP, OTP, Emulates COP880C, 36 I/O pins
ble poly silicon gate microCMOS EPROM technology.
Ð 28 DIP, OTP, Emulates COP820C/840C/881C,
These devices are available as UV erasable or One Time
24 I/O pins
Programmable (OTP). These low cost microcontrollers are
Ð 20 DIP, OTP, Emulates COP822C/842C, 16 I/O pins
complete microcomputers containing all system timing, in-
Ð 28 SO, 20 SO, OTP
terrupt logic, EPROM, RAM, and I/O necessary to imple-
Ð 44 LDCC, UV Erasable
ment dedicated control functions in a variety of applications.
Ð 40 CERDIP, 28 CERDIP, 20 CERDIP, UV Erasable
Features include an 8-bit memory mapped architecture, MI-
CROWIRE/PLUSTM serial I/O, a 16-bit timer/counter with
associated 16-bit autoreload/capture register, and a multi-
sourced interrupt. Each I/O pin has software selectable op-
tions to adapt the device to the specific application. These
devices operate over a voltage range of 4.5V to 6.0V. An
efficient, regular instruction set operating at a 1 ms instruc-
tion cycle rate provides optimal throughput.
CPU/Instruction Set Features
Y
1 ms instruction cycle time
Y
Three multi-source interrupts servicing
Ð External interrupt with selectable edge
Ð Timer interrupt
Ð Software interrupt
Y
Y
Y
Versatile and easy to use instruction set
8-bit Stack Pointer (SP)Ðstack in RAM
Two 8-bit Register Indirect Data Memory Pointers
(B and X)
The COP8780C, COP8781C and COP8782C can be config-
ured to EMULATE the COP880C, COP840C and COP820C
microcontrollers.
Key Features
Y
Fully Static CMOS
Y
16-bit multi-function timer supporting
Ð PWM mode
k
1 mA)
Low current drain (typically
Ð External event counter mode
Ð Input capture mode
Y
Extra-low current static HALT mode
Single supply operation: 4.5V to 6.0V
Y
Y
Y
Crystal, RC or External Oscillator, user configurable
b
a
Temperature range: 40 C to 85 C
§
§
Y
4 kbytes on-chip OTP EPROM with security feature
Y
128 or 64 bytes of on-chip RAM, user configurable
Development Support
Y
Emulation device for the COP880C, COP840C, and
COP820C
I/O Features
Y
Memory-mapped I/O
Y
Real-time emulation and full program debug offered by
MetaLink development system
Y
Software selectable I/O options (TRI-STATE
Pull, Weak Pull-Up Input, High Impedance input)
, Push-
É
Block Diagram
TL/DD/11299–1
FIGURE 1. Block Diagram
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.
COPSTM microcontrollers, MICROWIRETM, MICROWIRE/PLUSTM and WATCHDOGTM are trademarks of National Semiconductor Corporation.
iceMASTERTM is a trademark of MetaLink Corporation.
C
1996 National Semiconductor Corporation
TL/DD11299
RRD-B30M96/Printed in U. S. A.
http://www.national.com