Epson S1C31D50, Технические инструкции

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Seiko Epson Corporation S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
P x Port Mode Select Register
Register name Bit Bit name Initial Reset R/W Remarks
PPORTP x MODSEL 15 – 8 – 0x00 – R –
7 – 0 P x SEL[7:0] 0x00 H0 R/W
*1: The bit configuration differs depending on the port group.
*2: The initial value may be changed by the port.
Bits 15 – 8 Reserved
Bits 7 – 0 P x SEL[7:0]
These bits select whether each port is used for the GPIO function or a peripheral I/O
function.
1 (R/W): Use peripheral I/O function
0 (R/W): Use GPIO function
P x Port Function Select Register
Register name Bit Bit name Initial Reset R/W Remarks
PPORTP x FNCSEL 15 – 14 P x 7MUX[1:0] 0x0 H0 R/W –
13 – 12 P x 6MUX[1:0] 0x0 H0 R/W
11 – 10 P x 5MUX[1:0] 0x0 H0 R/W
9 – 8 P x 4MUX[1:0] 0x0 H0 R/W
7 – 6 P x 3MUX[1:0] 0x0 H0 R/W
5 – 4 P x 2MUX[1:0] 0x0 H0 R/W
3 – 2 P x 1MUX[1:0] 0x0 H0 R/W
1 – 0 P x 0MUX[1:0] 0x0 H0 R/W
*1: The bit configuration differs depending on the port group.
*2: The initial value may be changed by the port.
Bits 15 – 14 P x 7MUX[1:0]
: :
Bits 1 – 0 P x 0MUX[1:0]
These bits select the peripheral I/O function to be assigned to each port pin.
Table 7.6.1 Selecting Peripheral I/O Function
PPORTP x FNCSEL.P xy MUX[1:0] bits Peripheral I/O function
0x3 Function 3
0x2 Function 2
0x1 Function 1
0x0 Function 0
This selection takes effect when the PPORTP x MODSEL.P x SEL y bit = 1.