参数资料
型号: AT89C51ID2-RLRUM
厂商: Atmel
文件页数: 11/157页
文件大小: 0K
描述: IC 8051 MCU 64K FLASH 44-VQFP
产品培训模块: MCU Product Line Introduction
标准包装: 1,500
系列: 89C
核心处理器: 8051
芯体尺寸: 8-位
速度: 60MHz
连通性: I²C,SPI,UART/USART
外围设备: POR,PWM,WDT
输入/输出数: 34
程序存储器容量: 64KB(64K x 8)
程序存储器类型: 闪存
EEPROM 大小: 2K x 8
RAM 容量: 2K x 8
电压 - 电源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 44-LQFP
包装: 标准包装
配用: AT89OCD-01-ND - USB EMULATOR FOR AT8XC51 MCU
其它名称: AT89C51ID2-RLRUMDKR
108
AT89C51ID2
4289C–8051–11/05
Table 83. WDTPRG Register
WDTPRG - Watchdog Timer Out Register (0A7h)
Reset value = XXXX X000
WDT During Power Down
and Idle
In Power Down mode the oscillator stops, which means the WDT also stops. While in
Power Down mode the user does not need to service the WDT. There are 2 methods of
exiting Power Down mode: by a hardware reset or via a level activated external inter-
rupt which is enabled prior to entering Power Down mode. When Power Down is exited
with hardware reset, servicing the WDT should occur as it normally should whenever the
AT89C51ID2 is reset. Exiting Power Down with an interrupt is significantly different. The
interrupt is held low long enough for the oscillator to stabilize. When the interrupt is
brought high, the interrupt is serviced. To prevent the WDT from resetting the device
while the interrupt pin is held low, the WDT is not started until the interrupt is pulled high.
It is suggested that the WDT be reset during the interrupt service routine.
To ensure that the WDT does not overflow within a few states of exiting of powerdown, it
is better to reset the WDT just before entering powerdown.
In the Idle mode, the oscillator continues to run. To prevent the WDT from resetting the
AT89C51ID2 while in Idle mode, the user should always set up a timer that will periodi-
cally exit Idle, service the WDT, and re-enter Idle mode.
76
543
210
-
S2
S1
S0
Bit
Number
Bit
Mnemonic Description
7-
Reserved
The value read from this bit is undetermined. Do not try to set this bit.
6-
5-
4-
3-
2S2
WDT Time-out select bit 2
1S1
WDT Time-out select bit 1
0S0
WDT Time-out select bit 0
S2S1 S0
Selected Time-out
00
0 (214 - 1) machine cycles, 16. 3 ms @ F
OSCA =12 MHz
00
1 (215 - 1) machine cycles, 32.7 ms @ F
OSCA=12 MHz
01
0 (2
16 - 1) machine cycles, 65. 5 ms @ F
OSCA=12 MHz
01
1 (217 - 1) machine cycles, 131 ms @ F
OSCA=12 MHz
10
0 (218 - 1) machine cycles, 262 ms @ F
OSCA=12 MHz
10
1 (2
19 - 1) machine cycles, 542 ms @ F
OSCA=12 MHz
11
0 (220 - 1) machine cycles, 1.05 s @ F
OSCA=12 MHz
11
1 (221 - 1) machine cycles, 2.09 s @ F
OSCA=12 MHz
相关PDF资料
PDF描述
AT32UC3A364-ALUR IC MCU 64KB FLASH 144LQFP
DS80C310+FCG IC MCU HI SPEED 25MHZ 44-MQFP
D38999/20WD5SN CONN RCPT 5POS WALL MNT W/SCKT
ATMEGA6490-16AUR MCU AVR 64KB FLASH 16MHZ 64TQFP
D38999/20FD5SN CONN RCPT 5POS WALL MNT W/SCKT
相关代理商/技术参数
参数描述
AT89C51ID2-RLTIM 功能描述:IC 8051 MCU FLASH 64K 44VQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:89C 标准包装:9 系列:87C 核心处理器:8051 芯体尺寸:8-位 速度:40/20MHz 连通性:UART/USART 外围设备:POR,WDT 输入/输出数:32 程序存储器容量:32KB(32K x 8) 程序存储器类型:OTP EEPROM 大小:- RAM 容量:256 x 8 电压 - 电源 (Vcc/Vdd):4.5 V ~ 5.5 V 数据转换器:- 振荡器型:内部 工作温度:0°C ~ 70°C 封装/外壳:40-DIP(0.600",15.24mm) 包装:管件
AT89C51ID2-RLTUM 功能描述:8位微控制器 -MCU C51ID2 64K FLASH 32KHz 3-5.5V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT89C51ID2-SLRIM 功能描述:IC MCU FLASH 8051 64K 5V 44-PLCC RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器, 系列:89C 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)
AT89C51ID2-SLRUM 功能描述:8位微控制器 -MCU C51ID2 64K FLASH TWI 32KHz 5V RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
AT89C51ID2-SLSIM 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Flash Microcontroller