参数资料
型号: AT80C51RD2-SLSUM
厂商: Atmel
文件页数: 12/81页
文件大小: 0K
描述: IC 8051 MCU 5V SPI 20MHZ 44-PLCC
标准包装: 972
系列: 80C
核心处理器: 8051
芯体尺寸: 8-位
速度: 40MHz
连通性: UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 32
程序存储器类型: ROMless
RAM 容量: 1K x 8
电压 - 电源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-PLCC
包装: 管件
2
4113D–8051–01/09
AT80C51RD2
1.
Description
AT80C51RD2 microcontrollers are high performance versions of the 80C51 8-bit
microcontrollers.
The microcontrollers retain all features of the Atmel 80C52 with 256 bytes of internal RAM, a 7-
source 4-level interrupt controller and three timer/counters.
In addition, the microcontrollers have a Programmable Counter Array, an XRAM of 1024 byte, a
Hardware Watchdog Timer, a Keyboard Interface, a more versatile serial channel that facilitates
multiprocessor communication (EUART) and a speed improvement mechanism (X2 mode).
The microcontrollers have 2 software-selectable modes of reduced activity and 8 bit clock pres-
caler for further reduction in power consumption. In 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.
Table 1. Memory Size
2.
Block Diagram
Notes:
1. Alternate function of Port 1
2. Alternate function of Port 3
ROM (Bytes)
XRAM (Bytes)
TOTAL RAM (Bytes)
I/O
AT80C51RD2
ROMless
1024
1280
32
Timer 0
INT
RAM
256x8
T0
T1
RxD
TxD
WR
RD
EA
PSEN
ALE/
XTAL2
XTAL1
EUART
CPU
Timer 1
INT1
Ctrl
INT0
(2)
C51
CORE
(2) (2)
Port 0
P0
Port 1 Port 2 Port 3
Parallel I/O Ports & Ext. Bus
P1
P2
P3
XRAM
1Kx8
IB-bus
PCA
RESE
T
PROG
Watch
Dog
PCA
ECI
Vs
s
VC
C
(2)
(1)
Timer2
T2EX
T2
(1)
Key
Board
+
BRG
相关PDF资料
PDF描述
AT89LP51-20MU MCU 8051 4K FLASH 20MHZ 7X7MLF
AT80C51RD2-RLTUM IC 8051 MCU 5V SPI 20MHZ 44-VQFP
AT89S52-24JU IC MCU 8K FLASH 24MHZ 44-PLCC
AT89S52-24PU IC MCU 8K FLASH 24MHZ 40-DIP
200875-1 CONN FIXED JACKSCREW FMLE W/HDWR
相关代理商/技术参数
参数描述
AT80C51SND1C 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Single-Chip Flash Microcontroller with MP3 Decoder and Human Interface
AT80C51SND1C-7HTIL 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Single-Chip Flash Microcontroller with MP3 Decoder and Guman Interface
AT80C51SND1C-7HTJL 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Single-Chip Flash Microcontroller with MP3 Decoder and Human Interface
AT80C51SND1C-DDV 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:Single-Chip Flash Microcontroller with MP3 Decoder and Guman Interface
AT80C51SND1C-ROTIL 功能描述:IC MCU FLASH MP3 DECODER 80-TQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:80C 标准包装:1,500 系列:AVR® ATtiny 核心处理器:AVR 芯体尺寸:8-位 速度:16MHz 连通性:I²C,LIN,SPI,UART/USART,USI 外围设备:欠压检测/复位,POR,PWM,温度传感器,WDT 输入/输出数:16 程序存储器容量:8KB(4K x 16) 程序存储器类型:闪存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 11x10b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:20-SOIC(0.295",7.50mm 宽) 包装:带卷 (TR)