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AT89C51ED2-SLSUM 其他数据使用手册 - ATMEL（爱特美尔）
制造商:
ATMEL（爱特美尔）
分类:
微控制器
封装:
PLCC-44
描述:
ATMEL AT89C51ED2-SLSUM 微控制器, 8位, CAN 控制器, AT89C51, 60 MHz, 64 KB, 2 KB, 44 引脚, LCC
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AT89C51ED2-SLSUM数据手册
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AT89C51RD2/ED2
4235G–8051–08/05
The AT89C51RD2/ED2 retains all of the features of the Atmel 80C52 with 256 bytes of
internal RAM, a 9-source 4-level interrupt controller and three timer/counters. The
AT89C51ED2 provides 2048 bytes of EEPROM for nonvolatile data storage.
In addition, the AT89C51RD2/ED2 has a Programmable Counter Array, an XRAM of
1792 bytes, a Hardware Watchdog Timer, SPI interface, Keyboard, a more versatile
serial channel that facilitates multiprocessor communication (EUART) and a speed
improvement mechanism (X2 Mode).
The fully static design of the AT89C51RD2/ED2 allows to reduce system power con-
sumption by bringing the clock frequency down to any value, including DC, without loss
of data.
The AT89C51RD2/ED2 has 2 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 AT89C51RD2/ED2 make it more powerful for applications
that need pulse width modulation, high speed I/O and counting capabilities such as
alarms, motor control, corded phones, and smart card readers.
Table 1. Memory Size and I/O Pins
Package Flash (Bytes) XRAM (Bytes) Total RAM (Bytes) I/O
PLCC44/VQFP44/DIL40 64K 1792 2048 34
PLCC68/VQFP64 64K 1792 2048 50
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