SAB-C502-2RN

Microcomputer Components 8-Bit CMOS Microcontroller C502 Data Sheet 08.94 ht tp :/ Se /ww m w ic .s on ie du me ct ns or .d / e/ 8-Bit CMOS Microcontroller C502 Preliminary q q q q q q q q q q q q q q q q Fully compatible to standard 8051 microcontroller Versions for 12 / 20 MHz operating frequency 16 K × 8 ROM (SAB-C502-2R only) 256 × 8 RAM 256 × 8 XRAM (additional on-chip RAM) Eight datapointers for indirect addressing of program and external data memory (including XRAM) Four 8-bit ports Three 16 -bit Timers / Counters (Timer 2 with Up/Down Counter feature) USART with programmable 10-bit Baudrate-Generator Six interrupt sources, two priority levels Programmable 15-bit Watchdog Timer Oscillator Watchdog Fast Power On Reset Power Saving Modes P-DIP-40 package and P-LCC-44 package TA: 0 ˚C to 70 ˚C Temperature ranges: SAB-C502 TA: – 40 ˚C to 85 ˚C SAF-C502 SAB-C502 Semiconductor Group 1 08.94 C502 The SAB-C502-L/C502-2R described in this document is compatible with the SAB 80C52 and can be used for all present SAB 80C52 applications. The SAB-C502-2R contains a non-volatile 16 K × 8 read-only program memory, a volatile 256 × 8 read/write data memory, four ports, three 16-bit timers/counters, a six source, two priority level interrupt structure, a serial port and versatile fail save mechanisms. The SAB-C502-L/C502-2R incorporates 256 × 8 additional on-chip RAM called XRAM. For higher performance eight datapointers are implemented. The SAB-C502-L is identical, excep...