Epson S1C17624 Technical Manual page 97

address
0x5222 P2_OEN P2 Output Enable Register
0x5223 P2_PU P2 Port Pull-up Control Register
0x5224 P2_SM P2 Port Schmitt Trigger Control Register
0x522a P2_IEN P2 Port Input Enable Register
0x5230 P3_IN P3 Port Input Data Register
0x5231 P3_OUT P3 Port Output Data Register
0x5232 P3_OEN P3 Port Output Enable Register
0x5233 P3_PU P3 Port Pull-up Control Register
0x5234 P3_SM P3 Port Schmitt Trigger Control Register
0x523a P3_IEN P3 Port Input Enable Register
0x5240 P4_IN P4 Port Input Data Register
0x5241 P4_OUT P4 Port Output Data Register
0x5242 P4_OEN P4 Port Output Enable Register
0x5243 P4_PU P4 Port Pull-up Control Register
0x5244 P4_SM P4 Port Schmitt Trigger Control Register
0x524a P4_IEN P4 Port Input Enable Register
0x5250 P5_IN P5 Port Input Data Register
0x5251 P5_OUT P5 Port Output Data Register
0x5252 P5_OEN P5 Port Output Enable Register
0x5253 P5_PU P5 Port Pull-up Control Register
0x5254 P5_SM P5 Port Schmitt Trigger Control Register
0x525a P5_IEN P5 Port Input Enable Register
0x52a0 P00_03PMUX P0[3:0] Port Function Select Register
0x52a1 P04_07PMUX P0[7:4] Port Function Select Register
0x52a2 P10_13PMUX P1[3:0] Port Function Select Register
0x52a3 P14_17PMUX P1[7:4] Port Function Select Register
0x52a4 P20_23PMUX P2[3:0] Port Function Select Register
0x52a5 P24_27PMUX P2[7:4] Port Function Select Register
0x52a6 P30_33PMUX P3[3:0] Port Function Select Register
0x52a7 P34_37PMUX P3[7:4] Port Function Select Register
0x52a8 P40_43PMUX P4[3:0] Port Function Select Register
0x52a9 P44_47PMUX P4[7:4] Port Function Select Register
0x52aa P50_53PMUX P5[3:0] Port Function Select Register
0x52ab P54_56PMUX P5[6:4] Port Function Select Register
The I/O port registers are described in detail below. These are 8-bit registers.
note: When data is written to the registers, the "Reserved" bits must always be written as 0 and not 1.
Px Port input Data Registers (Px_in)
Register name address Bit
Px Port input 0x5200 D7–0 Pxin[7:0]
Data Register 0x5210
(Px_in) 0x5220
0x5230
0x5240
0x5250
(8 bits)
note: The PxINy bits for unavailable ports are reserved and always read as 0.
D[7:0] Pxin[7:0]: Px[7:0] Port input Data Bits
The port pin status can be read out. (Default: external input status)
1 (R): High level
0 (R): Low level
PxINy corresponds directly to the Pxy pin. The pin voltage level can be read out when input is enabled
(PxIENy = 1) (even if output is also enabled (PxOENy = 1)). The value read out will be 1 when the pin
voltage is High and 0 when Low.
The value read out is 0 when input is disabled (PxIENy = 0).
Writing operations to the read-only PxINy is disabled.
S1C17624/604/622/602/621 TeChniCal Manual
Register name
name Function
Px[7:0] port input data
Seiko epson Corporation
Function
Enables P2 port outputs.
Controls the P2 port pull-up resistor.
Controls the P2 port Schmitt trigger input.
Enables P2 port inputs.
P3 port input data
P3 port output data
Enables P3 port outputs.
Controls the P3 port pull-up resistor.
Controls the P3 port Schmitt trigger input.
Enables P3 port inputs.
P4 port input data
P4 port output data
Enables P4 port outputs.
Controls the P4 port pull-up resistor.
Controls the P4 port Schmitt trigger input.
Enables P4 port inputs.
P5 port input data *
P5 port output data *
Enables P5 port outputs. *
Controls the P5 port pull-up resistor. *
Controls the P5 port Schmitt trigger input. *
Enables P5 port inputs. *
Selects the P0[3:0] port functions.
Selects the P0[7:4] port functions.
Selects the P1[3:0] port functions.
Selects the P1[7:4] port functions.
Selects the P2[3:0] port functions.
Selects the P2[7:4] port functions.
Selects the P3[3:0] port functions.
Selects the P3[7:4] port functions.
Selects the P4[3:0] port functions.
Selects the P4[7:4] port functions. *
Selects the P5[3:0] port functions. *
Selects the P5[6:4] port functions. *
* Available only for S1C17624/622
Setting
1 1 (H) 0 0 (L)
9 i/O PORTS (P)
init. R/W Remarks
×
R
9-7