參數(shù)資料
型號(hào)： R5F6418JADFE
元件分類： 微控制器/微處理器
英文描述： MICROCONTROLLER, PQFP176
封裝： 24 X 24 MM, 0.50 MM PITCH, PLASTIC, LQFP-176
文件頁數(shù)： 95/128頁
文件大?。?/td> 922K
代理商： R5F6418JADFE
69
ATmega48PA/88PA/168PA [DATASHEET]
9223F–AVR–04/14
14.3
Alternate Port Functions
Most port pins have alternate functions in addition to being general digital I/Os. Figure 14-5 shows how the port pin control
signals from the simplified Figure 14-2 on page 65 can be overridden by alternate functions. The overriding signals may not
be present in all port pins, but the figure serves as a generic description applicable to all port pins in the AVR
microcontroller family.
Figure 14-5. Alternate Port Functions(1)
Note:
1.
WRx, WPx, WDx, RRx, RPx, and RDx are common to all pins within the same port. clkI/O, SLEEP, and PUD
are common to all ports. All other signals are unique for each pin.
D
0
1
Q
WRx
RRx
WPx
PTOExn
Pxn
CLR
RESET
Synchronizer
DA
T
A
BUS
PORTxn
Q
0
1
Q
L
D SET
CLR
Q
D
Q
PINxn
0
1
RESET
RPx
Pxn PULL-UP OVERRIDE ENABLE
Pxn PULL-UP OVERRIDE VALUE
PUD:
PULL-UP DISABLE
PUOExn:
Pxn PORT VALUE OVERRIDE VALUE
PVOVxn:
Pxn PORT VALUE OVERRIDE ENABLE
PVOExn:
Pxn DATA DIRECTION OVERRIDE ENABLE
Pxn DATA DIRECTION OVERRIDE VALUE
DDOExn:
DDOVxn:
SLEEP CONTROL
SLEEP:
Pxn, PORT TOGGLE OVERRIDE ENABLE
PTOExn:
Pxn DIGITAL INPUT ENABLE OVERRIDE VALUE
DIEOVxn:
Pxn DIGITAL INPUT ENABLE OVERRIDE ENABLE
DIEOExn:
I/O CLOCK
RDx:
RPx:
WRITE PINx
WRx:
ANALOG INPUT/OUTPUT PIN n ON PORTx
DIGITAL INPUT PIN n ON PORTx
RRx:
READ PORTx REGISTER
WPx:
WRITE PORTx
AIOxn:
DIxn:
READ PORTx PIN
WDx:
READ DDRx
WRITE DDRx
PUOVxn:
RDx
CLK
I/O
DIxn
AIOxn
CLK:
I/O
DIEOVxn
DIEOExn
PVOExn
DDOVxn
PVOVxn
0
1
PUOExn
PUOVxn
0
1
DDOExn
SLEEP
PUD
WDx
D
Q
CLR
DDxn
Q
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