AT87251G2D-3CSUM

Description：IC MCU 8/16BIT 32KB OTP 40PDIL
Series：8x251
Mfr：Microchip Technology
Package：Tube
Core Processor：C251

SKU:469044f02a4d Category: Microcontrollers Brand: Microchip Technology

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

Product introduction

AT87251G2D-3CSUM is listed in the Microcontrollers range at ChipApex. The manufacturer field lists Microchip Technology. Its product description is IC MCU 8/16BIT 32KB OTP 40PDIL. Review the specifications below when checking this part for your BOM.

Microcontrollers specifications for AT87251G2D-3CSUM

Description：IC MCU 8/16BIT 32KB OTP 40PDIL
Series：8x251
Mfr：Microchip Technology
Package：Tube
Core Processor：C251
Core Size：8/16-Bit
Speed：24MHz
Connectivity：EBI/EMI, I2C, Microwire, SPI, UART/USART
Peripherals：POR, PWM, WDT
Number of I/O：32
Program Memory Size：32KB (32K x 8)
Program Memory Type：OTP
EEPROM Size：-
RAM Size：1K x 8
Voltage - Supply (Vcc/Vdd)：4.5V ~ 5.5V
Data Converters：-
Oscillator Type：Internal
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Through Hole
Supplier Device Package：40-PDIL
Package / Case：40-DIP (0.600", 15.24mm)
Grade：-
Qualification：-

Microcontrollers datasheet and documents for AT87251G2D-3CSUM

AT87251G2D-3CSUM

Microcontrollers Overview

The AT87251G2D-3CSUM is an 8-bit microcontroller based on the C251 architecture, featuring a three-stage instruction pipeline and 16/32-bit ALU. It integrates 32 kilobytes of OTPROM, 1 Kbyte of on-chip RAM, and four parallel I/O ports. The device supports external memory spaces up to 256 kilobytes and includes a full-duplex UART with independent baud rate generator, SSLC for TWI/mWire/SPI protocols, and an Event and Waveform Controller (EWC). Power management features include Idle and Power-down modes.

Microcontrollers Feature Summary

Pin and software compatibility with standard 80C51 products and 80C51Fx/Rx/Rx+ families
Integrated Synchronous Serial Link Controller supporting TWI, μWire, and SPI protocols
Event and Waveform Controller compatible with Intel’s Programmable Counter Array
Power management capabilities including integrated Power-On Reset and programmable system clock

Microcontrollers Applications

ISDN Terminals
High-Speed Modems
PABX (SOHO)
Line Cards
DVD ROM and Players

Microcontrollers Procurement Notes

Verify the specific suffix '3CSUM' against official Microchip documentation to confirm package type and temperature range specifications. Ensure programming equipment supports the single pulse algorithm required for OTPROM devices. Confirm that the selected variant matches the required voltage range and operating temperature for the target application environment.

Microcontrollers Selection Notes

Select this component when legacy 80C51 code compatibility is required alongside extended memory addressing and enhanced serial communication interfaces. The C251 core offers improved throughput compared to standard 8051 designs. Consider the OTPROM version for prototyping or low-volume production where field reprogrammability is necessary.

Microcontrollers Part Context

This part belongs to the TSC80251G2D derivative family, which are based on the Atmel Microcontroller family utilizing the 8/16-bit C251 Architecture. The family is designed for applications requiring increased instruction throughput and larger addressable memory spaces while preserving C51 assembly routine compatibility.