AT89C4051-24PU

8051 体系结构闪存（可重新编程）微控制器，AtmelAtmel 提供 8051 可重新编程闪存微控制器，带可编程和可擦除只读存储器，使用高密度非易失内存技术。### 8051 体系结构微控制器，AtmelAtmel 的 8 位微控制器 MCU 基于 8051 指令集，结合久经考验的技术和最新特征及功能，所有均具有高级闪存。### 设备系列单周期芯 闪存 ISP（系统内可编程） 闪存（可重新编程） CAN 网络 MCU USB MCU ROMless

The is a 8-bit low-voltage high-performance CMOS Microcontroller with 4kB of flash programmable and erasable read-only memory. The device is manufactured using Atmel"s high-density non-volatile memory technology and is compatible with the industry-standard MCS-51 instruction set. By combining a versatile 8-bit CPU with flash on a monolithic chip, the Atmel AT89C4051 is a powerful microcontroller which provides a highly-flexible and cost-effective solution to many embedded control applications. The AT89C4051 provides the following standard features, 4kB of flash, 128 bytes of RAM, 15 I/O lines, two 16-bit timer/counters, a five-vector, two-level interrupt architecture, a full duplex serial port, a precision analogue comparator, on-chip oscillator and clock circuitry. In addition, the AT89C4051 is designed with static logic for operation down to zero frequency and supports two software-selectable power saving modes.

.

Compatible with MCS®-51 products

.

2kB Reprogrammable flash memory

.

10,000 Write/erase cycles endurance

.

Two-level program memory lock

.

128 x 8-bit internal RAM

.

15 Programmable I/O lines

.

Two 16-bit timer/counters

.

Six interrupt sources

.

Programmable serial UART channel

.

Direct LED drive outputs

.

On-chip analogue comparator

.

Low-power idle and power-down modes

.

Brown-out detection

.

Power-on reset POR