EN80C251SB16

Product Summary

The EN80C251SB16 is a high-performance CHMOS microcontroller. It is a member of the Intel family of 8-bit MCS 251 microcontrollers, the EN80C251SB16 is binary-code compatible with MCS 51 microcontroller and pin compatible with 44-pin PLCC MCS 51 microcontrollers. MCS 251 microcontrollers feature an enriched instruction set, linear addressing, and efficient C-language support. The EN80C251SB16 has 512 bytes or 1Kbyte 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.

Parametrics

EN80C251SB16 absolute maximum ratings: (1)Storage Temperature: -65℃ to +150℃; (2)Voltage on EA#/VPP Pin to VSS: 0V to +13.0V; (3)Voltage on Any other Pin to VSS: -0.5V to +6.5V; (4)IOL per I/O Pin: 15mA; (5)Power Dissipation: 1.5W.

Features

EN80C251SB16 features: (1)Real-time and Programmed Wait State Bus Operation; (2)Binary-code Compatible with MCS 51; (3)Pin Compatible with 44-pin PLCC and 40 pin PDIP MCS 51 Sockets; (4)Register-based MCS?251 Architecture; (5)40-byte Register File; (6)Registers Accessible as Bytes, Words, or Double Words; (7)Enriched MCS 51 Instruction Set; (8)16-bit and 32-bit Arithmetic and Logic Instructions; (9)Compare and Conditional Jump Instructions; (10)Expanded Set of Move Instructions; (11)Linear Addressing; (12)256-Kbyte Expanded External Code/Data Memory Space; (13)ROM/OTPROM/EPROM Options: 16 Kbytes (SB/SQ), 8 Kbytes (SA/SP), or without ROM/OTPROM/EPROM; (14)16-bit Internal Code Fetch; (15)64-Kbyte Extended Stack Space; (16)On-chip Data RAM Options: 1-Kbyte (SA/SB) or 512-Byte (SP/SQ); (17)8-bit, 2-clock External Code Fetch in Page Mode; (18)Fast MCS 251 Instruction Pipeline; (19)User-selectable Configurations: External Wait States (0-3 wait states), Address Range & Memory Mapping, Page Mode; (20)32 Programmable I/O Lines; (21)Seven Maskable Interrupt Sources with Four Programmable Priority; (22)Levels; (23)Three Flexible 16-bit Timer/counters; (24)Hardware Watchdog Timer; (25)Programmable Counter Array: High-speed Output, Compare/Capture Operation, Pulse Width Modulator, Watchdog Timer; (26)Programmable Serial I/O Port; (27)Framing Error Detection; (28)Automatic Address Recognition; (29)High-performance CHMOS Technology; (30)Static Standby to 16-MHz Operation; (31)Complete System Development; (32)Support: Compatible with Existing Tools, New MCS 251 Tools Available: Compiler, Assembler, Debugger, ICE; (33)Package Options (PDIP, PLCC, and Ceramic DIP).

Diagrams