A lot of 5 brand new never used Phillips S87C751 -1N24 in a plastic 24 pins DIP.At least 100 in stock. 83C751/87C751CMOS single-chip 8-bit microcontrollers
DESCRIPTION\The Philips 83C751/87C751 offers the advantages of the 80C51 architecture in a small package and at low cost. The 8XC751 Micro-controller is fabricated with Philips high-density CMOS technology. Philips epit-axial substrate minimizes CMOS latch-up sensitivityThe 8XC751 contains a 2k× 8 ROM (83C751) EPROM (87C751), a64 × 8 RAM, 19 I/O lines, a 16-bit auto-reload counter/timer, afive-source, fixed-priority level interrupt structure, a bi-directionalinter-integrated circuit (I2C) serial bus interface, and an on-chiposcillator.The on-board inter-integrated circuit (I2C) bus interface allows the8XC751 to operate as a master or slave device on the I2 C small area network. This capability facilitates I/O and RAM expansion,access to EEPROM, processor-to-processor communication, andefficient interface to a wide variety of dedicated I2C peripherals.
FEATURES•80C51 based architecture•Inter-Integrated Circuit (I2C) serial bus interface•Small package sizes–24-pin DIP (300 mil “skinny DIP”)–24-pin Shrink Small Outline Package–28-pin PLCC•87C751 available in one-time programmable plastic packages•Wide oscillator frequency range•Low power consumption:–Normal operation: less than 11mA @ 5V, 12MHz–Idle mode–Power-down mode
2k × 8 ROM (83C751)2k × 8 EPROM (87C751)•64 × 8 RAM•16-bit auto reloadable counter/timer•Fixed-rate timer
Boolean processor