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参数资料
| 型号： | S80C31BH |
| 厂商： | INTEL CORP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, 12 MHz, MICROCONTROLLER, PQFP44 |
| 封装： | QFP-44 |
| 文件页数： | 16/21页 |
| 文件大小： | 2233K |
| 代理商： | S80C31BH |
87C51/80C51BH/80C31BH
PIN DESCRIPTION
VCC: Supply voltage during normal, Idle and Power
Down operations.
VSS: Circuit ground.
Port 0
: Port 0 is an 8-bit open drain bidirectional I/O
port. As an output port each pin can sink several LS
TTL inputs. Port 0 pins that have 1's written to them
float, and in that state can be used as high-imped-
ance inputs.
Port 0 is also the multiplexed low-order address and
data bus during accesses to external memory. In this
application it uses strong internal pullups when emit-
ting 1's.
Port 0 also receives the code bytes during EPROM
programming, and outputs the code bytes during
program verification. External pullups are required
during program verification.
Port 1
: Port 1 is an 8-bit bidirectional I/O port with
internal pullups. The Port 1 output buffers can drive
LS TTL inputs. Port 1 pins that have 1's written to
them are pulled high by the internal pullups, and in
that state can be used as inputs. As inputs, Port 1
pins that are externally pulled low will source current
(IIL, on the data sheet) because of the internal pull-
ups.
Port 1 also receives the low-order address bytes
during EPROM programming and program verifica-
tion.
Port 2
: Port 2 is an 8-bit bidirectional I/O port with
internal pullups. Port 2 pins that have 1's written to
them are pulled high by the internal pullups, and in
that state can be used as inputs. As inputs, Port 2
pins that are externally pulled low will source current
(IIL, on the data sheet) 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
address (MOVX DPTR). In this application it uses
strong internal pullups when emitting 1's.
During accesses to external Data Memory that use
8-bit addresses (MOVX Ri), Port 2 emits the con-
tents of the P2 Special Function Register.
Port 2 also receives some control signals and the
high-order address bits during EPROM programming
and program verification.
Port 3:
Port 3 is an 8-bit bidirectional I/O port with
internal pullups. The Port 3 output buffers can drive
LS TTL inputs. Port 3 pins that have 1's written to
them are pulled high by the internal pullups, and in
that state can be used as inputs. As inputs, Port 3
pins that are externally pulled low will source current
(IIL, on the data sheet) because of the pullups.
Port 3 also serves the functions of various special
features of the MCS-51 Family, as listed below:
Pin
Name
Alternate Function
P3.0 RXD Serial input line
P3.1
TXD
Serial output line
P3.2 INT0 External Interrupt 0
P3.3 INT1 External Interrupt 1
P3.4
T0
Timer 0 external input
P3.5
T1
Timer 1 external input
P3.6
WR
External Data Memory Write strobe
P3.7
RD
External Data Memory Read strobe
Port 3 also receives some control signals for
EPROM programming and program verification.
RST
: Reset input. A high on this pin for two machine
cycles while the oscillator is running resets the de-
vice. The port pins will be driven to their reset condi-
tion when a minimum VIH1 voltage is applied wheth-
er the oscillator is running or not. An internal pull-
down resistor permits a power-on reset with only a
capacitor connected to VCC.
ALE/PROG
: Address Latch Enable output signal for
latching the low byte of the address during accesses
to external memory. This pin is also the program
pulse input (PROG) during EPROM programming for
the 87C51.
If desired, ALE operation can be disabled by setting
bit 0 of SFR location 8EH. With this bit set, the pin is
weakly pulled high. However, the ALE disable fea-
ture will be suspended during a MOVX or MOVC in-
struction, idle mode, power down mode and ICE
mode. The ALE disable feature will be terminated by
reset. When the ALE disable feature is suspended or
terminated, the ALE pin will no longer be pulled up
weakly. Setting the ALE-disable bit has no effect if
the microcontroller is in external execution mode.
4
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| S80C51BHP-1 | 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQFP44 |
| S80C51BH | 8-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP44 |
| S87C51BH-2 | 8-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PQFP44 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| S80C31BH-1 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| S80C31BH1SF88 | 功能描述:IC MPU 8-BIT 5V 16MHZ 44-MQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:80C 其它有关文件:STM32F101T8 View All Specifications 特色产品:STM32 32-bit Cortex MCUs 标准包装:490 系列:STM32 F1 核心处理器:ARM? Cortex?-M3 芯体尺寸:32-位 速度:36MHz 连通性:I²C，IrDA，LIN，SPI，UART/USART 外围设备:DMA，PDR，POR，PVD，PWM，温度传感器，WDT 输入/输出数:26 程序存储器容量:64KB（64K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:10K x 8 电压 - 电源 (Vcc/Vdd):2 V ~ 3.6 V 数据转换器:A/D 10x12b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:36-VFQFN，36-VFQFPN 包装:托盘 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名称:497-9032STM32F101T8U6-ND |
| S80C31BH-24 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
| S80C31BH24SF88 | 功能描述:IC MPU 8-BIT 5V 24MHZ 44-QFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:80C 其它有关文件:STM32F101T8 View All Specifications 特色产品:STM32 32-bit Cortex MCUs 标准包装:490 系列:STM32 F1 核心处理器:ARM? Cortex?-M3 芯体尺寸:32-位 速度:36MHz 连通性:I²C，IrDA，LIN，SPI，UART/USART 外围设备:DMA，PDR，POR，PVD，PWM，温度传感器，WDT 输入/输出数:26 程序存储器容量:64KB（64K x 8） 程序存储器类型:闪存 EEPROM 大小:- RAM 容量:10K x 8 电压 - 电源 (Vcc/Vdd):2 V ~ 3.6 V 数据转换器:A/D 10x12b 振荡器型:内部 工作温度:-40°C ~ 85°C 封装/外壳:36-VFQFN，36-VFQFPN 包装:托盘 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名称:497-9032STM32F101T8U6-ND |
| S80C31-L16 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:8-Bit Microcontroller |
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