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80C251SQ Dataheets PDF



Part Number 80C251SQ
Manufacturers Intel
Logo Intel
Description HIGH-PERFORMANCE CHMOS MICROCONTROLLER
Datasheet 80C251SQ Datasheet80C251SQ Datasheet (PDF)

PRELIMINARY 8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER Commercial/Express s Real-time and Programmed Wait State Bus Operation s Binary-code Compatible with MCS® 51 s Pin Compatible with 44-pin PLCC and 40pin PDIP MCS 51 Sockets s Register-based MCS® 251 Architecture — 40-byte Register File — Registers Accessible as Bytes, Words, or Double Words s Enriched MCS 51 Instruction Set — 16-bit and 32-bit Arithmetic and Logic Instructions — Compare and Conditional Jump Instructions — Expa.

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PRELIMINARY 8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER Commercial/Express s Real-time and Programmed Wait State Bus Operation s Binary-code Compatible with MCS® 51 s Pin Compatible with 44-pin PLCC and 40pin PDIP MCS 51 Sockets s Register-based MCS® 251 Architecture — 40-byte Register File — Registers Accessible as Bytes, Words, or Double Words s Enriched MCS 51 Instruction Set — 16-bit and 32-bit Arithmetic and Logic Instructions — Compare and Conditional Jump Instructions — Expanded Set of Move Instructions s Linear Addressing s 256-Kbyte Expanded External Code/Data Memory Space s ROM/OTPROM/EPROM Options: 16 Kbytes (SB/SQ), 8 Kbytes (SA/SP), or without ROM/OTPROM/EPROM s 16-bit Internal Code Fetch s 64-Kbyte Extended Stack Space s On-chip Data RAM Options: 1-Kbyte (SA/SB) or 512-Byte (SP/SQ) s 8-bit, 2-clock External Code Fetch in Page Mode s Fast MCS 251 Instruction Pipeline s User-selectable Configurations: — External Wait States (0-3 wait states) — Address Range & Memory Mapping — Page Mode s 32 Programmable I/O Lines s Seven Maskable Interrupt Sources with Four Programmable Priority Levels s Three Flexible 16-bit Timer/counters s Hardware Watchdog Timer s Programmable Counter Array — High-speed Output — Compare/Capture Operation — Pulse Width Modulator — Watchdog Timer s Programmable Serial I/O Port — Framing Error Detection — Automatic Address Recognition s High-performance CHMOS Technology s Static Standby to 16-MHz Operation s Complete System Development Support — Compatible with Existing Tools — New MCS 251 Tools Available: Compiler, Assembler, Debugger, ICE s Package Options (PDIP, PLCC, and Ceramic DIP) A member of the Intel family of 8-bit MCS 251 microcontrollers, the 8XC251SA/SB/SP/SQ is binary-code compatible with MCS 51 microcontrollers and pin compatible with 40-pin PDIP and 44-pin PLCC MCS 51 microcontrollers. MCS 251 microcontrollers feature an enriched instruction set, linear addressing, and efficient C-language support. The 8XC251SA/SB/SP/SQ has 512 bytes or 1 Kbyte of on-chip RAM and is available with 8 Kbytes or 16 Kbytes of on-chip ROM/OTPROM/EPROM, or without ROM/OTPROM/EPROM. A variety of features can be selected by new user-programmable configurations. COPYRIGHT © INTEL CORPORATION, 1996 May 1996 Order Number: 272783-003 Free Datasheet http://www.datasheet4u.com/ Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Intel’s Terms and Conditions of Sale for such products, Intel assumes no liability whatsoever, and Intel disclaims any express or implied warranty, relating to sale and/or use of Intel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. Intel products are not intended for use in medical, life saving, or life sustaining applications. Intel retains the right to make changes to specifications and product descriptions at any time, without notice. *Third-party brands and names are the property of their respective owners. Copies of documents which have an ordering number and are referenced in this document, or other Intel literature, may be obtained from: Intel Corporation P.O. Box 7641 Mt. Prospect IL 60056-764 or call 1-800-548-4725 Free Datasheet http://www.datasheet4u.com/ 8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER System Bus and I/O Ports P0.7:0 P2.7:0 Code OTPROM/ROM 8 Kbytes or 16 Kbytes I/O Ports and Peripheral Signals P1.7:0 P3.7:0 Port 0 Drivers Port 2 Drivers Data RAM 512 Bytes or 1024 Bytes Port 1 Drivers Port 3 Drivers Memory Data (16) Memory Address (16) Watchdog Timer Bus Interface Code Bus (16) Code Address (24) Peripheral Interface Timer/ Counters Instruction Sequencer Data Address (24) Interrupt Handler IB Bus (8) PCA SRC2 (8) Data Bus (8) SRC1 (8) Serial I/O Clock & Reset Peripherals ALU Register File Data Memory Interface DST (16) MCS® 251 Microcontroller Core Clock & Reset 8XC251SA/SB/SP/SQ Microcontroller A4214-01 Figure 1. 8XC251SA/SB/SP/SQ Block Diagram PRELIMINARY 3 Free Datasheet http://www.datasheet4u.com/ 8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER 1.0 NOMENCLATURE X Te XX Pa ck 8 X o Pr X o Pr XXXXX o Pr XX v De Figure 2. The 8XC251SA/SB/SP/SQ Family Nomenclature Table 1. Description of Product Nomenclature Parameter Temperature and Burn-in Options Options no mark T Packaging Options N P C Program Memory Options 0 3 7 Process Information Product Family Device Memory Options C 251 SA SB SP SQ Device Speed 16 Description Commercial operating temperature range (0°C to 70°C) with Intel standard burn-in. Express operating temperature range (-40°C to 85°C) with Intel standard burn-in. 44-pin Plastic Leaded Chip Carrier (PLCC) 40-pin Plastic Dual In-line Package (PDIP).


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