X5200/0X5210/0X5220/0X5230: Px Port Input Data Registers (Px_In) - Epson S1C17001 Technical Manual

0x5200/0x5210/0x5220/0x5230: Px Port Input Data Registers (Px_IN)

Register name Address Bit
P0 Port Input 0x5200 D7–0 P0IN[7:0]
Data Register (8 bits)
(P0_IN)
P1 Port Input 0x5210 D7–0 P1IN[7:0]
Data Register (8 bits)
(P1_IN)
P2 Port Input 0x5220 D7–0 P2IN[7:0]
Data Register (8 bits)
(P2_IN)
P3 Port Input 0x5230 D7–4 –
Data Register (8 bits)
D3–0 P3IN[3:0]
(P3_IN)
Note: The "x" in the bit names indicates the port number (0 to 3).
D[7:0] PxIN[7:0]: Px[7:0] Port Input Data Bits (P3 port is P3IN[3:0])
Read out the P port pin status. (Default: external pin status)
1(R): High level
0(R): Low level
PxIN[7:0] correspond directly to the Px[7:0] pins and read the pin voltage level regardless of input/out-
put mode. 1 is read when the pin voltage is High; 0 is read when the voltage is Low.
Writing operations to the read-only PxIN[7:0] are disabled.
S1C17001 TECHNICAL MANUAL
Name Function
P0[7:0] port input data
P1[7:0] port input data
P2[7:0] port input data
reserved
P3[3:0] port input data
EPSON
10 INPUT/OUTPUT PORT (P)
Setting Init. R/W
1 1 (H) 0 0 (L)
1 1 (H) 0 0 (L)
1 1 (H) 0 0 (L)
–
1 1 (H) 0 0 (L)
Remarks
× R
× R
× R
– – 0 when being read.
× R
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