
APPENDIX A LIST OF I/O REGISTERS
S1C17705 TECHNICAL MANUAL
Seiko Epson Corporation
AP-A-3
Peripheral
Address
Register name
Function
Power
generator
(8-bit device)
0x5120
VD1_CTL
VD1 Control Register
Controls the VD1 voltage and heavy load
protection mode.
0x5122
VD1_SEL
VD1 Select Register
Selects the VD1 regulator output level.
P port &
port MUX
(8-bit device)
0x5200
P0_IN
P0 Port Input Data Register
P0 port input data
0x5201
P0_OUT
P0 Port Output Data Register
P0 port output data
0x5202
P0_OEN
P0 Port Output Enable Register
Enables P0 port outputs.
0x5203
P0_PU
P0 Port Pull-up Control Register
Controls the P0 port pull-up resistor.
0x5204
P0_SM
P0 Port Schmitt Trigger Control Register
Controls the P0 port Schmitt trigger input.
0x5205
P0_IMSK
P0 Port Interrupt Mask Register
Enables P0 port interrupts.
0x5206
P0_EDGE
P0 Port Interrupt Edge Select Register
Selects the signal edge for generating P0
port interrupts.
0x5207
P0_IFLG
P0 Port Interrupt Flag Register
Indicates/resets the P0 port interrupt occur-
rence status.
0x5208
P0_CHAT
P0 Port Chattering Filter Control Register
Controls the P0 port chattering filter.
0x5209
P0_KRST
P0 Port Key-Entry Reset Configuration Register Configures the P0 port key-entry reset function.
0x520a
P0_IEN
P0 Port Input Enable Register
Enables P0 port inputs.
0x5210
P1_IN
P1 Port Input Data Register
P1 port input data
0x5211
P1_OUT
P1 Port Output Data Register
P1 port output data
0x5212
P1_OEN
P1 Port Output Enable Register
Enables P1 port outputs.
0x5213
P1_PU
P1 Port Pull-up Control Register
Controls the P1 port pull-up resistor.
0x5214
P1_SM
P1 Port Schmitt Trigger Control Register
Controls the P1 port Schmitt trigger input.
0x5215
P1_IMSK
P1 Port Interrupt Mask Register
Enables P1 port interrupts.
0x5216
P1_EDGE
P1 Port Interrupt Edge Select Register
Selects the signal edge for generating P1
port interrupts.
0x5217
P1_IFLG
P1 Port Interrupt Flag Register
Indicates/resets the P1 port interrupt occur-
rence status.
0x5218
P1_CHAT
P1 Port Chattering Filter Control Register
Controls the P1 port chattering filter.
0x521a
P1_IEN
P1 Port Input Enable Register
Enables P1 port inputs.
0x5220
P2_IN
P2 Port Input Data Register
P2 port input data
0x5221
P2_OUT
P2 Port Output Data Register
P2 port output data
0x5222
P2_OEN
P2 Output Enable Register
Enables P2 port outputs.
0x5223
P2_PU
P2 Port Pull-up Control Register
Controls the P2 port pull-up resistor.
0x5224
P2_SM
P2 Port Schmitt Trigger Control Register
Controls the P2 port Schmitt trigger input.
0x5225
P2_IMSK
P2 Port Interrupt Mask Register
Enables P2 port interrupts.
0x5226
P2_EDGE
P2 Port Interrupt Edge Select Register
Selects the signal edge for generating P2
port interrupts.
0x5227
P2_IFLG
P2 Port Interrupt Flag Register
Indicates/resets the P2 port interrupt occur-
rence status.
0x5228
P2_CHAT
P2 Port Chattering Filter Control Register
Controls the P2 port chattering filter.
0x522a
P2_IEN
P2 Port Input Enable Register
Enables P2 port inputs.
0x5230
P3_IN
P3 Port Input Data Register
P3 port input data
0x5231
P3_OUT
P3 Port Output Data Register
P3 port output data
0x5232
P3_OEN
P3 Port Output Enable Register
Enables P3 port outputs.
0x5233
P3_PU
P3 Port Pull-up Control Register
Controls the P3 port pull-up resistor.
0x5234
P3_SM
P3 Port Schmitt Trigger Control Register
Controls the P3 port Schmitt trigger input.
0x5235
P3_IMSK
P3 Port Interrupt Mask Register
Enables P3 port interrupts.
0x5236
P3_EDGE
P3 Port Interrupt Edge Select Register
Selects the signal edge for generating P3
port interrupts.
0x5237
P3_IFLG
P3 Port Interrupt Flag Register
Indicates/resets the P3 port interrupt occur-
rence status.
0x5238
P3_CHAT
P3 Port Chattering Filter Control Register
Controls the P3 port chattering filter.
0x523a
P3_IEN
P3 Port Input Enable Register
Enables P3 port inputs.
0x5240
P4_IN
P4 Port Input Data Register
P4 port input data
0x5241
P4_OUT
P4 Port Output Data Register
P4 port output data
0x5242
P4_OEN
P4 Port Output Enable Register
Enables P4 port outputs.
0x5243
P4_PU
P4 Port Pull-up Control Register
Controls the P4 port pull-up resistor.
0x5244
P4_SM
P4 Port Schmitt Trigger Control Register
Controls the P4 port Schmitt trigger input.
0x524a
P4_IEN
P4 Port Input Enable Register
Enables P4 port inputs.
0x52a0
P00_03PMUX P0[3:0] Port Function Select Register
Selects the P0[3:0] port functions.
0x52a1
P04_07PMUX P0[7:4] Port Function Select Register
Selects the P0[7:4] port functions.
0x52a2
P10_13PMUX P1[3:0] Port Function Select Register
Selects the P1[3:0] port functions.
0x52a3
P14_17PMUX P1[7:4] Port Function Select Register
Selects the P1[7:4] port functions.
0x52a4
P20_23PMUX P2[3:0] Port Function Select Register
Selects the P2[3:0] port functions.
0x52a5
P24_27PMUX P2[7:4] Port Function Select Register
Selects the P2[7:4] port functions.
0x52a6
P30_33PMUX P3[3:0] Port Function Select Register
Selects the P3[3:0] port functions.
0x52a7
P34_37PMUX P3[7:4] Port Function Select Register
Selects the P3[7:4] port functions.
0x52a8
P40_42PMUX P4[2:0] Port Function Select Register
Selects the P4[2:0] port functions.