2- / 4-bit Microprocessors

COP400-series
Manufacturer National Semiconductor

Category 4-bit one-chip microcomputer (controller)
Introduction 1978
History

The COP (controller oriented processor) was designed for low cost and had a price of under $ 1.00 when ordered in large quantities.

Technology

Manufactured in N-channel silicon gate MOS technology (except for the COP420C and COP421C, which are implemented via CMOS technology; single +5 V supply
Diagrams
Block diagarm Pin Layout
Max. clock
frequency
4.0 MHz

Examples




Package
National Semiconductor
COP 402 N
40 pin DIP
 
Manufactured
devices
  402 402M 404L 410L 411L 420 420L 420C 421 421L 421C 440 444L
package pin count 40 40 40 24 20 28 28 28 24 24 24 40 28
ROM program bytes 0 0 0 512 512 1024 1024 1024 1024 1024 1024 2048 2048
RAM (bits) 64 64 128 32 32 64 64 64 64 64 64 128 128
Output Bits 6 6 6 6 4 6 6 6 6 6 6 10 6
Input Bits 5 1 6 1 1 6 6 6 2 2 2 10 6
Bidirectional I/O Bits 12 12 12 12 11 12 12 12 12 12 12 16 12
Supply Voltage Range [V] 4.5-6.3 4.5-6.3 4.5-9.5 4.5-9.5 4.5-9.5 4.5-6.3 ^4.5-9.5 2.4-6.3 4.5-6.3 4.5-9.5 2.4-6.3 4.5-6.3 4.5-9.5
Separate RAM avail. No No No Yes Yes Yes Yes No Yes Yes No Yes Yes
Stack Levels 3 3 3 2 2 3 3 3 3 3 3 3 3
Interrupt Yes No Yes No No Yes Yes Yes No No No Yes Yes
Instr. Cycle Time [us] 4 4 16 16 16 4 16 16 4 16 16 4 16
Second source CMOS parts: Motorola (i.e. 14xxxx)