參數(shù)資料
型號: MC68HC705L16
廠商: 飛思卡爾半導(dǎo)體(中國)有限公司
英文描述: Microcontrollers
中文描述: 微控制器
文件頁數(shù): 52/146頁
文件大小: 772K
代理商: MC68HC705L16
Parallel Input/Output (I/O)
MC68HC05L16 MC68HC705L16 Data Sheet, Rev. 4.1
52
Freescale Semiconductor
6.2 Port A
Port A is an 8-bit, bidirectional, general-purpose port. The data direction of a port A pin is determined by
its corresponding DDRA bit.
When a port A pin is programmed as an output by the corresponding DDRA bit, data in the PORTA data
register becomes output data to the pin. This data is returned when the PORTA register is read.
Open drain or CMOS outputs are selected by AWOMH and AWOML bits in the WOM1 register. If the
AWOMH bit is set, the P-channel drivers of bits 7–4 output buffers are disabled (open drain). If the
AWOML bit is set, the P-channel drivers of bits 3–0 output buffers are disabled (open drain).
When a bit is programmed as input by the corresponding DDRA bit, the pin level is read by the CPU.
Port A has optional pullup resistors. When the RAH bit or RAL bit in the RCR1 is set, pullup resistors are
attached to the upper four bits or lower four bits of port A pins, respectively. When a pin outputs a low
level, the pullup resistor is disconnected regardless of the RAH or RAL bit state.
6.2.1 Port A Data Register
Read
Anytime; returns pin level if DDR set to input; returns output data latch if DDR set to output
Write
Anytime; data stored in an internal latch; drives pin only if DDR set for output
Reset
Becomes high-impedance input
6.2.2 Port A Data Direction Register
Read
Anytime when OPTM = 1
Write
Anytime when OPTM = 1
Reset
Cleared to $00; all general-purpose I/O configured for input
Address:
$0000
Bit 7
6
5
4
3
2
1
Bit 0
Read:
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
Write:
Reset:
Unaffected by reset
Figure 6-2. Port A Data Register (PORTA)
Address:
Option Map — $0000
Bit 7
6
5
4
3
2
1
Bit 0
Read:
DDRA7
DDRA6
DDRA5
DDRA4
DDRA3
DDRA2
DDRA1
DDRA0
Write:
Reset:
0
0
0
0
0
0
0
0
Figure 6-3. Port A Data Direction Register (DDRA)
相關(guān)PDF資料
PDF描述
MC68HC705X4 HCMOS Microcontroller Unit
MC68HC711A0FB ROM-based high-performance microcontrollers
MC68HC711Ex APPENDIX A ELECTRICAL CHARACTERISTICS
MC68HC711K4VFN2 8-BIT MICROCONTROLLER
MC68HC711K4VFN3 8-BIT MICROCONTROLLER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC705L32FU 制造商:Rochester Electronics LLC 功能描述: 制造商:Freescale Semiconductor 功能描述:
MC68HC705L5FUE 功能描述:8位微控制器 -MCU 705L5-EPP-80QFP-6019 RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MC68HC705MC4CDW 制造商:Motorola 功能描述:MOTOROLA S7D9B
MC68HC705P6ACDW 功能描述:8位微控制器 -MCU 8 Bit 2.1MHz RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
MC68HC705P6ACP 功能描述:IC MCU 2.1MHZ 4.5K OTP 28-DIP 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 程序存儲器容量:64KB(64K x 8) 程序存儲器類型: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