收藏本站
12
AT89C51ID2
4289C–8051–11/05
I/O
MOSI: SPI Master Output Slave Input line
When SPI is in master mode, MOSI outputs data to the slave peripheral. When SPI is in
slave mode, MOSI receives data from the master controller.
XTALA1
21
15
I
Crystal A 1: Input to the inverting oscillator amplifier and input to the internal clock genera-
tor circuits.
XTALA2
20
14
O
Crystal A 2: Output from the inverting oscillator amplifier
XTALB1
2
40
I
Crystal B 1: (Sub Clock) Input to the inverting oscillator amplifier and input to the internal
clock generator circuits.
XTALB2
1
39
O
Crystal B 2: (Sub Clock) Output from the inverting oscillator amplifier
P2.0 - P2.7
24 - 31
18 - 25
I/O
Port 2: Port 2 is an 8-bit bidirectional I/O port with internal pull-ups. Port 2 pins that have 1s
written to them are pulled high by the internal pull-ups and can be used as inputs. As
inputs, Port 2 pins that are externally pulled low will source current because of the internal
pull-ups. Port 2 emits the high-order address byte during fetches from external program
memory and during accesses to external data memory that use 16-bit addresses (MOVX
@DPTR).In this application, it uses strong internal pull-ups emitting 1s. During accesses to
external data memory that use 8-bit addresses (MOVX @Ri), port 2 emits the contents of
the P2 SFR.
P3.0 - P3.7
11,
13 - 19
5,
7 - 13
I/O
Port 3: Port 3 is an 8-bit bidirectional I/O port with internal pull-ups. Port 3 pins that have 1s
written to them are pulled high by the internal pull-ups and can be used as inputs. As
inputs, Port 3 pins that are externally pulled low will source current because of the internal
pull-ups. Port 3 also serves the special features of the 80C51 family, as listed below.
11
5
I
RXD (P3.0): Serial input port
13
7
O
TXD (P3.1): Serial output port
14
8
I
INT0 (P3.2): External interrupt 0
15
9
I
INT1 (P3.3): External interrupt 1
16
10
I
T0 (P3.4): Timer 0 external input
17
11
I
T1 (P3.5): Timer 1 external input
18
12
O
WR (P3.6): External data memory write strobe
19
13
O
RD (P3.7): External data memory read strobe
P4.0 - P4.7
-
I/O
Port 4: Port 4 is an 8-bit bidirectional I/O port with internal pull-ups. Port 5 pins that have 1s
written to them are pulled high by the internal pull-ups and can be used as inputs. As
inputs, Port 4 pins that are externally pulled low will source current because of the internal
pull-ups.
P5.0 - P5.7
-
I/O
Port 5: Port 5 is an 8-bit bidirectional I/O port with internal pull-ups. Port 3 pins that have 1s
written to them are pulled high by the internal pull-ups and can be used as inputs. As
inputs, Port 5 pins that are externally pulled low will source current because of the internal
pull-ups.
PI2.0 - PI2.1
34, 12
28, 6
Port I2: Port I2 is an open drain. It can be used as inputs (must be polarized to Vcc with
external resistor to prevent any parasitic current consumption).
34
28
I/O
SCL (PI2.0): 2-wire Serial Clock
SCL output the serial clock to slave peripherals
SCL input the serial clock from master
Table 15. Pin Description (Continued)
Mnemonic
Pin Number
Type
Name and Function
PLCC44
VQFP44
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
AT89C51RC-24PU IC MCU 32K FLASH 24MHZ 40-DIP
AT89C51RC2-RLRIL IC MCU FLASH 8051 32K 3V 44-VQFP
AT89C51RE2-SLRUM MCU 8051 128K FLASH 44-PLCC
AT89C51SND1C-7HTUL IC MCU 64KB FLASH MEM 81-CBGA
AT89C51SND2C-7FTUL IC 8051 MCU FLASH 64K MP3 100BGA
AT89C52-24PI IC MICRO CTRL 24MHZ 40DIP
AT89C55WD-24AU IC 8051 MCU FLASH 20K 44TQFP
AT89EB5114-TGSIL IC 8051 MCU FLASH 4K 20SOIC
相关代理商/技术参数
AT89C51ID2-RLRUM 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-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
AT89C51ID2-SLSUM 功能描述:8位微控制器 -MCU 64K FLASH 32KHz 3.5-5V Ind. 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-SMSIM 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Flash Microcontroller