參數(shù)資料
型號: MC68HC705P6ACP
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: HCMOS Microcontroller Unit
中文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP28
封裝: PLASTIC, DIP-28
文件頁數(shù): 54/130頁
文件大?。?/td> 1541K
代理商: MC68HC705P6ACP
Input/Output Ports
Advance Information
MC68HC705P6A
Rev. 2.0
54
Input/Output Ports
MOTOROLA
6.5 Port C
Port C is an 8-bit bidirectional port which can share pins PC3
PC7 with
the A/D subsystem. The port C data register is located at address $0002
and its data direction register (DDR) is located at address $0006. The
contents of the port C data register are indeterminate at initial powerup
and must be initialized by user software. Reset does not affect the data
registers, but clears the DDRs, thereby setting all of the port pins to input
mode. Writing a 1 to a DDR bit sets the corresponding port pin to output
mode (see
Figure 6-3
).
Port C may be used for general I/O applications when the A/D
subsystem is disabled. The ADON bit in register ADSC is used to
enable/disable the A/D subsystem. Care must be exercised when using
pins PC0
PC2 while the A/D subsystem is enabled. Accidental changes
to bits that affect pins PC3
PC7 in the data or DDR registers will produce
unpredictable results in the A/D subsystem. See
Section 9. Analog
Subsystem
.
Figure 6-3. Port C I/O Circuitry
READ $0002
WRITE $0002
READ $0006
DATA
REGISTER BIT
I/O
PIN
OUTPUT
INTERNAL HC05
DATA BUS
RESET
(RST)
WRITE $0006
DATA DIRECTION
REGISTER BIT
相關(guān)PDF資料
PDF描述
MC68HC912D60A Microcontrollers
MC68HC912D60C Microcontrollers
MC68HC912D60P Microcontrollers
MC68VZ328P Integrated Portable System Processor Product Brief
MC74AC14DR2 Hex Inverter Schmitt Trigger
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC705P6ADW 制造商:Rochester Electronics LLC 功能描述:MCU, 176 BYTES RAM, A/D - Bulk
MC68HC705P6AMDW 功能描述:IC MCU 4.6K OTP 2.1MHZ 28-SOIC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:HC05 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN,SCI,SPI 外圍設(shè)備:POR,PWM,溫度傳感器,WDT 輸入/輸出數(shù):21 程序存儲器容量:40KB(20K x 16) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
MC68HC705P6AMP 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC68HC705P6CDW 制造商:Motorola Inc 功能描述:
MC68HC705P6CP 制造商:Freescale Semiconductor 功能描述: 制造商:Motorola Inc 功能描述: