參數(shù)資料
型號: MC68HSC05P1AP
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDIP28
封裝: PLASTIC, DIP-28
文件頁數(shù): 79/124頁
文件大?。?/td> 623K
代理商: MC68HSC05P1AP
NON-DISCLOSURE
AGREEMENT
REQUIRED
Input/Output Ports
General Release Specification
MC68HC05P1A Rev. 3.0
58
Input/Output Ports
MOTOROLA
7.5 Port C
Port C is an 8-bit bidirectional port that does not share any of its pins with
other subsystems. The port C data register is located at address $0002,
and its data direction register (DDR) is located at address $0006. 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 7-3). Two port C
pins, PC0 and PC1, can source and sink a higher current than a typical
I/O pin. See Section 10. Electrical Specifications regarding current
specifications.
Figure 7-3. 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
HIGH CURRENT
CAPABILITY, PC0
AND PC1 ONLY
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