Intel 4040

The Intel 4040 was the successor to the Intel 4004. It was introduced in 1974.

Table of contents

1 New features 2 Extensions 3 New support chips

New features

\n*Interrupt\n*Single Step

Extensions

\n*Instruction Set expanded to 60 instructions\n*Program memory expanded to 8K bytes\n*Registers expanded to 24\n*Subroutine stack expanded to 7 levels deep

New support chips

\n*4201 - Clock Generator 500 to 740 kHz using 4 to 5.185 MHz crytals\n*4308 - 1K byte ROM\n*4207 - General Purpose byte Output port\n*4209 - General Purpose byte Input port\n*4211 - General Purpose byte I/O port\n*4289 - Standard Memory Interface (replaces 4008/4009)\n*4702 - 256 byte UVEPROM\n*4316 - 2K byte ROM\n*4101 - 256 4-bit word RAM\n*4002 - 320 bit (80 x 4) RAM and 4 discrete Outputs \n Category:Microprocessors