EN80C251TB24 Datasheet, PDF (1/36 Pages) Intel Corporation – HIGH-PERFORMANCE CHMOS MICROCONTROLLER

8xC251TB/TQ
HIGH-PERFORMANCE CHMOS MICROCONTROLLER
Commercial/Express
■ Real-time and Programmed Wait State
Bus Operation
■ Binary-code Compatible with MCS^® 51
■ Pin Compatible with 44-pin PLCC and
40-pin PDIP MCS 51 Sockets
■ Register-based MCS^® 251 Architecture
— 40-byte Register File
— Registers Accessible as Bytes,
Words, or Double Words
■ Enriched MCS 51 Instruction Set
— 16-bit and 32-bit Arithmetic and
Logic Instructions
— Compare and Conditional Jump
Instructions
— Expanded Set of Move Instructions
■ Linear Addressing
■ 256-Kbyte Expanded External
Code/Data Memory Space
■ ROM Options:
16 Kbytes or without ROM
■ 16-bit Internal Code Fetch
■ 64-Kbyte Extended Stack Space
■ On-chip Data RAM Options:
512-Byte
■ 8-bit, 2-clock External Code Fetch in
Page Mode
■ Fast MCS 251 Instruction Pipeline
■ User-selectable Configurations:
— External Wait States (0-3 wait
states)
— Address Range & Memory Mapping
— Page Mode
— Extended Data Float Timings or
8xC251Sx Compatible AC Timings
■ 32 Programmable I/O Lines
■ Eight Maskable Interrupt Sources with
Four Programmable Priority Levels
■ Three Flexible 16-bit Timer/counters
■ Hardware Watchdog Timer
■ Programmable Counter Array
— High-speed Output
— Compare/Capture Operation
— Pulse Width Modulator
— Watchdog Timer
■ Two Programmable Serial I/O Ports
— Framing Error Detection
— Automatic Address Recognition
■ High-performance CHMOS Technology
■ Static Standby to 24-MHz Operation
■ Complete System Development
Support
— Compatible with Existing Tools
— MCS 251 Tools Available: Compiler,
Assembler, Debugger, ICE
■ Package Options (PDIP and PLCC)
© INTEL CORPORATION
December 2003
Order Number: 273129-002