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參數(shù)資料
| 型號： | MC68HC11FC0CFU5 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Technical Summary 8-Bit Microcontroller |
| 中文描述： | 8-BIT, 6 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | QFP-64 |
| 文件頁數(shù)： | 28/74頁 |
| 文件大?。?/td> | 513K |
| 代理商： | MC68HC11FC0CFU5 |
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MOTOROLA
MC68HC11F1/FC0
34
MC68HC11FTS/D
7.7 Port G
Port G is an eight-bit general-purpose I/O port with a data register (PORTG) and a data direction register
(DDRG). When enabled, the upper four lines (PG[7:4] can be used as chip-select outputs in expanded
modes. When any of these pins are not being used for chip selects, they can be used for general-pur-
pose I/O. Port G can be configured for wired-OR operation by setting the GWOM bit in the OPT2 reg-
ister.
NOTE
PG[1:0] are not available on the 64-pin MC68HC11FC0.
7.8 Parallel I/O Registers
Port pin function is mode dependent. Do not confuse pin function with the electrical state of the pin at
reset. Port pins are either driven to a specified logic level or are configured as high impedance inputs.
I/O pins configured as high-impedance inputs have port data that is indeterminate. The contents of the
corresponding latches are dependent upon the electrical state of the pins during reset. In port descrip-
tions, an “I” indicates this condition. Port pins that are driven to a known logic level during reset are
shown with a value of either one or zero. Some control bits are unaffected by reset. Reset states for
these bits are indicated with a “U”.
I = Indeterminate value
For DDRx bits, 0 = input and 1 = output.
*These bits are not present on the 64-pin QFP version of the MC68HC11FC0.
I = Indeterminate value
PORTA — Port A Data Register
$x000
Bit 7
6
5
4
3
2
1
Bit 0
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
RESET:
I
Alternate
Function:
PAI
OC2
OC3
OC4
OC5/IC4
IC1
IC2
IC3
And/or:
OC1
—
DDRA — Port A Data Direction Register
$x001
Bit 7
654321
Bit 0
DDA7
DDA6
DDA5
DDA4
DDA3
DDA2
DDA1
DDA0
RESET:
00000000
PORTG — Port G Data Register
$x002
Bit 7
6
5
4
3
2
1
Bit 0
PG7
PG6
PG5
PG4
PG3
PG2
PG1*
PG0*
RESET:
I
Alternate
Function:
CSPROG
CSGEN
CSIO1
CSIO2
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