AT89C51RB2-3CSIM【PDF 13/127 页】IC 8051 MCU FLASH 16K 40DIP

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Sheet目录3850

9页 10页 11页 12页 [13页]14页 15页 16页 17页

AT89C51RB2/RC2

4180E–8051–10/06

I/O

CEX4: Capture/Compare External I/O for PCA Module 4

P1.0 - P1.7

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.

XTAL1

Crystal 1: Input to the inverting oscillator amplifier and input to the internal clock

generator circuits.

XTAL2

Crystal 2: Output from the inverting oscillator amplifier

P2.0 - P2.7

21 - 28

24 - 31

18 - 25

I/O

Port 2: Port 2 is an 8-bit bi-directional 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. Some

Port 2 pins receive the high order address bits during EPROM programming and

verification:

P2.0 to P2.5 for 16 KB devices

P2.0 to P2.6 for 32KB devices

P3.0 - P3.7

10 - 17

11,

13 - 19

7 - 13

I/O

Port 3: Port 3 is an 8-bit bi-directional 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.

RXD (P3.0): Serial input port

TXD (P3.1): Serial output port

INT0 (P3.2): External interrupt 0

INT1 (P3.3): External interrupt 1

T0 (P3.4): Timer 0 external input

T1 (P3.5): Timer 1 external input

WR (P3.6): External data memory write strobe

RD (P3.7): External data memory read strobe

RST

I/O

Reset: A high on this pin for two machine cycles while the oscillator is running,

resets the device. An internal diffused resistor to VSS permits a power-on reset using

only an external capacitor to V

CC. This pin is an output when the hardware

watchdog forces a system reset.

ALE/PROG

O (I)

Address Latch Enable/Program Pulse: Output pulse for latching the low Byte of

the address during an access to external memory. In normal operation, ALE is

emitted at a constant rate of 1/6 (1/3 in X2 mode) the oscillator frequency, and can

be used for external timing or clocking. Note that one ALE pulse is skipped during

each access to external data memory. This pin is also the program pulse input

(PROG) during Flash programming. ALE can be disabled by setting SFR’s AUXR. 0

bit. With this bit set, ALE will be inactive during internal fetches.

Table 12. Pin Description for 40 - 44 Pin Packages (Continued)

Mnemonic

Pin Number

Type

Name and Function

DIL

LCC

VQFP44 1.4

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AT89C51RB2-3CSUL 功能描述:8位微控制器 -MCU 8-bit 16K Flash C51RB2 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

AT89C51RB2-3CSUM 功能描述:8位微控制器 -MCU C51RB2 FLASH 5V 16k 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

AT89C51RB2L1-RLTUL 功能描述:8位微控制器 -MCU Microcontroller 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

AT89C51RB2-RLRIL 功能描述:IC MCU FLASH 8051 16K 3V 44-VQFP 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)

AT89C51RB2-RLRIM 功能描述:IC MCU FLASH 8051 16K 5V 44-VQFP RoHS:否类别:集成电路 (IC) >> 嵌入式 - 微控制器，系列:89C 产品培训模块:MCU Product Line Introduction AVR® UC3 Introduction 标准包装:2,500 系列:AVR®32 UC3 B 核心处理器:AVR 芯体尺寸:32-位速度:60MHz 连通性:I²C，IrDA，SPI，SSC，UART/USART，USB 外围设备:欠压检测/复位，DMA，POR，PWM，WDT 输入/输出数:28 程序存储器容量:128KB（128K x 8）程序存储器类型:闪存 EEPROM 大小:- RAM 容量:32K x 8 电压 - 电源 (Vcc/Vdd):1.65 V ~ 1.95 V 数据转换器:A/D 6x10b 振荡器型:内部工作温度:-40°C ~ 85°C 封装/外壳:48-TQFP 包装:带卷 (TR) 配用:ATSTK600-TQFP48-ND - STK600 SOCKET/ADAPTER 48-TQFPATAVRONEKIT-ND - KIT AVR/AVR32 DEBUGGER/PROGRMMRATEVK1101-ND - KIT DEV/EVAL FOR AVR32 AT32UC3B 其它名称:AT32UC3B1128-AUR-NDAT32UC3B1128-AURTR

AT89C51RB2-RLRUL 功能描述:8位微控制器 -MCU C51RB2 FLASH 3V 16k 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

AT89C51RB2-RLRUM 功能描述:8位微控制器 -MCU C51RB2 FLASH 5V 16k 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

AT89C51RB2-RLTCM 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit Microcontroller with 16K/ 32K Bytes Flash

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