参数资料
型号: MC68HRC705JP7CP
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP28
封装: PLASTIC, DIP-28
文件页数: 128/164页
文件大小: 1165K
代理商: MC68HRC705JP7CP
Parallel Input/Output
MC68HC705JJ7 MC68HC705JP7 Advance Information Data Sheet, Rev. 4.1
66
Freescale Semiconductor
5.
If the PB7/SCK pin is to be a digital output, then the SPE bit in the SCR must be cleared and the
DDRB7 bit must be set. The pulldown device will be disabled when the pin is set as an output.
Table 7-3. Port B Pin Functions — PB5–PB7
Port B
Pin
Control Bits
PORTB Access
(Pin or Data
Register)
Result on
Port B Pins
SIOP
SWPDI
in MOR
Port B
SPE
MSTR
PDIBx
DDRBx(1)
1. DDRB can always be read or written.
Read
Write
Pulldown
Pin
PB5
0
X(2)
2. Don’t care
0
Pin
Data
On
PB5 in
0
1
0
Pin
Data
Off
PB5 in
1
X
0
Pin
Data
Off
PB5 in
X(2)
1
Data
Off
PB5 out
1
X(2)
0
SDO
Data
Off
SDO out
1
Data
Off
SDO out
PB6
0
X(2)
0
Pin
Data
On
PB6 in
0
1
0
Pin
Data
Off
PB6 in
1
X(2)
0
Pin
Data
Off
PB6 in
X(2)
1
Data
Off
PB6 out
1
X(2)
X(2))
X(2)
0
SDI
Data
Off
SDI in
1
Data
Off
SDI in
PB7
0
X(2)
0
Pin
Data
On
PB7 in
0
1
0
Pin
Data
Off
PB7 in
1
X(2)
0
Pin
Data
Off
PB7 in
X(2)
1
Data
Off
PB7 out
1
0
X(2)
0
SCK
Data
Off
SCK in
1
Data
Off
SCK in
1
X(2)
0
SCK
Data
Off
SCK out
1
Data
Off
SCK out
相关PDF资料
PDF描述
MC68HC705SP7CP 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC705JP7CDW 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC705JJ7CDW 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO20
MC68HC705JJ7CP 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP20
MC68HC705JJ7S 8-BIT, UVPROM, 2.1 MHz, MICROCONTROLLER, CDIP20
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