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INTRODUCTION
A member of the Intel family of 8-bit MCS 251 microcontrollers, the 8xC251TA/TB/TP/TQ is binary-code compatible with MCS 51 microcontrollers and pin compatible with 40-pin PDIP and 44-pin PLCC MCS 51 microcontrollers.
■ 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 (TB/TQ), 8 Kbytes (TA/TP), or without ROM
■ 16-bit Internal Code Fetch
■ 64-Kbyte Extended Stack Space
■ On-chip Data RAM Options: 1-Kbyte (TA/TB) or 512-Byte (TP/TQ)
■ 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) -
Similar parts: 430483 , Click to view
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Datasheet
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Shopping guide
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- Last Updated: 2024/06/03 07:56 +0800
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