参数资料
型号: SPMC16V1CPU20
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 16-BIT, MROM, 20.97 MHz, MICROCONTROLLER, PQFP100
封装: TQFP-100
文件页数: 76/128页
文件大小: 571K
代理商: SPMC16V1CPU20
MC68HC16V1
MOTOROLA
MC68HC16V1TS/D
51
The port C pin assignment register controls the function of all port C pins.
In expanded modes, the pin assignment register resets to the default reset states programmed in the
port/clock configuration shadow register (PCON[13:11]).
PC[1:0] can be configured as address pins (ADDR[17:16]) or digital I/O. Refer to Table 32.
3.8.3 Port D Operations
Port D pins can be individually selected as either digital I/O or external bus control and debug signals,
depending on the mode of the SLIM configured during reset.
The port D output data register latches the data to be driven on the port D output pins. When read,
PORTD always reflects the current state of the data latches. Power-on reset can change the state of
these latches. All other sources of reset have no effect.
When read, the port D pin data register reflects the current state of the port D pins, regardless of wheth-
er the pins are configured as inputs or outputs. Writes have no effect.
PCPAR — Port C Pin Assignment Register
$YFFA1E
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
NOT USED
PCPA[2:0]
PDPAR
RESET (EXPANDED MODE):
0
PCON
13
PCON
12
PCON
11
RESET (SINGLE-CHIP MODE):
0
Table 32 PC[1:0] Pin Assignment Encoding
PCPAR[10:8]
Port C I/O Pins
Address Pins
0 0 0
PC[1:0]
None
0 0 1
PC1
ADDR16
0 1 0
None
ADDR[17:16]
0 1 1
Reserved
1 X X
Reserved
PORTD — Port D Output Data Register
$YFFA19
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
PORTC
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
RESET:
U
PORTDP — Port D Pin Data Register
$YFFA1B
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
PORTC
PDP7
PDP6
PDP5
PDP4
PDP3
PDP2
PDP1
PDP0
RESET:
CURRENT STATE OF CORRESPONDING PINS
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