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| 型號(hào)： | MC68HC705J5ACDW |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO20 |
| 封裝： | SOIC-20 |
| 文件頁數(shù)： | 55/113頁 |
| 文件大小： | 1212K |
| 代理商： | MC68HC705J5ACDW |
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GENERAL RELEASE SPECIFICATION
July 16, 1999
MOTOROLA
INPUT/OUTPUT PORTS
MC68HC05J5A
7-2
REV 2.1
Each Port A pin is controlled by the corresponding bits in a data direction register,
a data register and a pulldown/up register. The Port A Data Register is located at
address $0000. The Port A Data Direction Register (DDRA) is located at address
$0004. The Port A Pulldown/up Register (PDURA) is located at address $0010.
Reset operation will clear the DDRA and the PDURA. The Port A Data Register is
unaffected by reset.
Figure 7-2. Port A I/O Circuitry
7.2.1 Port A Data Register
Each Port A I/O pin has a corresponding bit in the Port A Data Register. When a
Port A pin is programmed as output, the corresponding data register bit deter-
mines the logic state of that pin. When a Port A pin is programmed as input, any
read from the Port A Data Register will return the logic state of the corresponding
I/O pin. The Port A data register is unaffected by reset.
7.2.2 Port A Data Direction Register
Each Port A I/O pin may be programmed as input by clearing the corresponding
bit in the DDRA, or programmed as output by setting the corresponding bit in the
DDRA. The DDRA can be accessed at address $0004. The DDRA is cleared by
reset.
If congured as output pins, PA6 and PA7 have slow output falling-edge transition
feature. The slow transition feature is controlled by the SLOWE bit of DDRB.
SLOWE bit, if set and if the pin is congured as an output pin, enables the slow
falling-edge output transition feature of all four I/O lines, PA6, PA7, PB1, and PB2.
Write $0010
100
A
Pulldown
Read $0000
Write $0000
Read $0004
Data
Register Bit
PA0-PA3 and PA7 only:
to IRQ
interrupt system
8 mA Sink
Capability
(Bits 4-7 Only)
I/O
Pin
Output
Mask Option
(Software Pulldown/up Inhibit)
Internal HC05
Data Bus
Reset
(RST)
Write $0004
Data Direction
Register Bit
Pulldown/up
Register Bit
VDD
5K
Pullup
Note1: All the I/O port pins may have either pullup or pulldown device.
Note2: PA6 and PA7 output drivers are the open-drained type
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| MC68HC705J5ACP | 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述: |
| MC68HC705JB4DW | 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述: |
| MC68HC705JJ7CDW | 功能描述:IC MCU 8BIT 20-SOIC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 其它有關(guān)文件:STM32F101T8 View All Specifications 特色產(chǎn)品:STM32 32-bit Cortex MCUs 標(biāo)準(zhǔn)包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C，IrDA，LIN，SPI，UART/USART 外圍設(shè)備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲(chǔ)器容量:64KB（64K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 10x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN，36-VFQFPN 包裝:托盤 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... 其它名稱:497-9032STM32F101T8U6-ND |
| MC68HC705JP7CDW | 功能描述:IC MCU 8BIT 28-SOIC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 其它有關(guān)文件:STM32F101T8 View All Specifications 特色產(chǎn)品:STM32 32-bit Cortex MCUs 標(biāo)準(zhǔn)包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C，IrDA，LIN，SPI，UART/USART 外圍設(shè)備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲(chǔ)器容量:64KB（64K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 10x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN，36-VFQFPN 包裝:托盤 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... 其它名稱:497-9032STM32F101T8U6-ND |
| MC68HC705JP7CP | 制造商:Rochester Electronics LLC 功能描述: 制造商:Freescale Semiconductor 功能描述: |
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