AT89C51AC2 带有32K系统内可编程FLash存储器

Flash (Kbytes)   32
ISP   UART
Self Program Memor   API
EEPROM (Kbytes)   2
RAM (Bytes)   1280
F.max (MHz)   40
Vcc (V)   3-5.5
I/O Pins   34
UART   1
16-bit Timers   3
Watchdog   Yes
Packages   LQFP 44
PLCC 44
Pb-Free Packages   LQFP 44
PLCC 44
AT89C51AC2 概述

8-bit microcontroller with 32Kbyte Flash, 2KByte EEPROM and 10-bit A/D converter
We recommend to implement an external brown out to prevent any Flash/EEPROM corruption during power-on or power-off. Please refer to related application note: External Brown-out Protection for C51 Microcontrollers with Active High Reset Input.

The A/T89C51AC2 is a high performance Flash version of the 80C51 single chip 8-bit microcontrollers. It contains a 32 KB Flash memory block for program and data.
The 32 KB Flash memory can be programmed either in parallel mode or in serial mode with the ISP capability or with software. The programming voltage is internally generated from the standard VCC pin.
The A/T89C51AC2 retains all features of the 80C51 with 256 bytes of internal RAM, a 7-source 4-level interrupt controller and three timer/counters. In addition, th A/T89C51AC2 has a 10-bit A/D converter, a 2 KB Boot Flash memory, 2 KB EEPROM for data, a Programmable Counter Array, an XRAM of 1024 bytes, a Hardware Watch- Dog Timer, and a more versatile serial channel that facilitates multiprocessor communication (EUART). The fully static design of the A/T89C51AC2 reduces system power consumption by bringing the clock frequency down to any value, even DC,without loss of data.

The A/T89C51AC2 has two software-selectable modes of reduced activity and an 8-bit clock prescaler for further reduction in power consumption. In the idle mode the CPU is frozen while the peripherals and the interrupt system are still operating. In the Power-down mode the RAM is saved and all other functions are inoperative.
The added features of the A/T89C51AC2 make it more powerful for applications that need A/D conversion, pulse width modulation, high speed I/O and counting capabilities such as industrial control, consumer goods, alarms, motor control, among others.
While remaining fully compatible with the 80C52, the T8C51AC2 offers a superset of this standard microcontroller. In X2 mode, a maximum external clock rate of 20 MHz reaches a 300 ns cycle time.

AT89C51AC2 特性
AT89C51AC2 订购型号
Part-Number Supply
Voltage
Temperature
Range
Max
Frequency
Package Packing
AT89C51AC2-RLTUM 3V to 5.5V + 10% Industrial Green 40 MHz VQFP44 Tray
AT89C51AC2-SLSUM PLCC44 Stick
AT89C51AC2 应用技术支持与电子电路设计开发资源下载
  1. AT89C51AC2 数据手册DataSheet 下载. PDF
  2. 80C51微控制器的复位输入. PDF (编号: Tech 8051 00049)
  3. 80C51在系统Flash编程. PDF (编号:8051 00050)