參數(shù)資料
型號: MC68HC05C9AFN
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數(shù): 112/160頁
文件大小: 4128K
代理商: MC68HC05C9AFN
Input/Output Ports
Port C
MC68HC05C9A Rev. 4.0
General Release Specification
Input/Output Ports
NON-DISCLOSURE
AGREEMENT
REQUIRED
7.5 Port C
Port C is an 8-bit bidirectional port. The port C data register is at $0002
and the data direction register (DDR) is at $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 data direction registers, thereby returning the ports to inputs.
Writing a one to a DDR bit sets the corresponding port bit to output
mode. PC7 has a high current sink and source capability. Figure 7-1 is
also applicable to port C.
7.6 Port D
Port D is a 7-bit bidirectional port. Four of its pins are shared with the SPI
subsystem and two more are shared with the SCI subsystem. The port
D data register is at $0003 and the data direction register is at $0007.
The contents of the port D data register are indeterminate at initial
powerup and must be initialized by user software. During reset all seven
bits become valid input ports because the DDR bits are cleared and the
special function output drivers associated with the SCI and SPI
subsystems are disabled, thereby returning the ports to inputs. Writing a
one to a DDR bit sets the corresponding port bit to output mode.
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相關(guān)PDF資料
PDF描述
MC9S08GB32CFU 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP64
MC9S12A128BCFU 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP80
MCF5272VF66 32-BIT, 66 MHz, RISC PROCESSOR, PBGA196
MC68HSC05C8AP 8-BIT, MROM, 4.1 MHz, MICROCONTROLLER, PDIP40
MC9S12KG64CPV 16-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP112
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05C9AMB 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05C9AMFB 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05C9AMFN 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05C9AMP 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC05C9AP 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers