68HC11 Datasheet PDF – 8-Bit Microcontroller – Motorola

Part Number : 68HC11

Function : High-performance microcontroller units (MCUs) / 8-Bit Microcontroller

Package : DIP 48 Pin, PLCC 52 Pin, QFP 64 PIn, SDIP 56 Pin

Manufacturers : Motorola => Freescale

Pinouts :

68HC11 datasheet


Description :

The MC68HC11A8, MC68HC11A1, and MC68HC11A0 high-performance microcontroller units (MCUs) are based on the M68HC11 Family. These high speed, low power consumption chips have multiplexed buses and a fully static design.

The chips can operate at frequencies from 3 MHz to dc. The three MCUs are created from the same masks; the only differences are the value stored in the CONFIG register, and whether or not the ROM or EEPROM is tested and guaranteed.


1. M68HC11 CPU
2. Power-saving stop and wait modes
3. Low-voltage devices available (3.0–5.5 Vdc)
4. 0, 256, 512, or 768 bytes of on-chip RAM, data retained during standby
5. 0, 12, or 20 Kbytes of on-chip ROM or EPROM
6. 0, 512, or 2048 bytes of on-chip EEPROM with block protect for security
7. 2048 bytes of EEPROM with selectable base address in the MC68HC811E2
8. Asynchronous non-return-to-zero (NRZ) serial communications interface (SCI)

Other data sheets within the file : MC68HC11A0, MC68HC11A0FN, MC68HC11A0P, MC68HC11A1

Reference Site : https://en.wikipedia.org/wiki/Freescale_68HC11

68HC11 Datasheet PDF

68HC11 pdf


P80C851FFA Datasheet PDF – CMOS 8-Bit Microcontroller

Part Number : P80C851FFA

Function : CMOS single-chip 8-bit microcontroller with on-chip EEPROM

Package : SOT307-2 Type

Manufacturers : Philips Electronics

Pinouts :

P80C851FFA datasheet

Description :

The Philips 80C851/83C851 is a high-performance microcontroller fabricated with Philips high-density CMOS technology. The 80C851/83C851 has the same instruction set as the 80C51. The Philips CMOS technology combines the high speed and density characteristics of HMOS with the low power attributes of CMOS. The Philips epitaxial substrate minimizes latch-up sensitivity. The 80C851/83C851 contains a 4k ×8 ROM with mask-programmable ROM code protection, a 128 ×8 RAM, 256 ×8 EEPROM, 32 I/O lines, two 16-bit counter/timers, a seven-source, five vector, two-priority level nested interrupt structure, a serial I/O port for either multi-processor communications, I/O expansion or full duplex UART, and on-chip oscillator and clock circuits.


1. 80C51 based architecture
(1) 4k × 8 ROM
(2) 128 × 8 RAM
(3) Two 16-bit counter/timers
(4) Full duplex serial channel
(5) Boolean processor
5. Mask-programmable ROM code protection
6. Memory addressing capability
(1) 64k ROM and 64k RAM
7. Power control modes:
(1) Idle mode
(2) Power-down mode
8. CMOS and TTL compatible
9. 1.2 to 16MHz or 3.5 to 24MHz
10. Three package styles
11. Three temperature ranges
12. ROM code protection

Other data sheets within the file : P80C851FBA, P80C851FBB, P80C851FBP, P80C851FFB

P80C851FFA Datasheet PDF Download

P80C851FFA pdf