APPENDIX A LIST OF I/O REGISTERS
S1C33L26 TECHNICAL MANUAL
Seiko Epson Corporation
AP-A-15
Register name Address
Bit
Name
Function
Setting
Init. R/W
Remarks
PB Port Pull-up
Control Register
(GPIO_PB_
PUP)
0x30032c
(8 bits)
D7–0 PUPB[7:0] PB[7:0] port pull-up enable
1 Enable
0 Disable
0x0
*
R/W
*
PB[7:0]: not pulled
up
Write-protected
FPT0–3
Interrupt Port
Select Register
(GPIO_FPT03_
SEL)
0x300330
(8 bits)
D7–6 SPT3[1:0]
FPT3 interrupt input port select
SPT3[1:0]
Port
0x0 R/W
0x3
0x2
0x1
0x0
P33
P13
P53
P03
D5–4 SPT2[1:0]
FPT2 interrupt input port select
SPT2[1:0]
Port
0x0 R/W
0x3
0x2
0x1
0x0
P32
P12
P52
P02
D3–2 SPT1[1:0]
FPT1 interrupt input port select
SPT1[1:0]
Port
0x0 R/W
0x3
0x2
0x1
0x0
P31
P11
P51
P01
D1–0 SPT0[1:0]
FPT0 interrupt input port select
SPT0[1:0]
Port
0x0 R/W
0x3
0x2
0x1
0x0
P30
P10
P50
P00
FPT4–7
Interrupt Port
Select Register
(GPIO_FPT47_
SEL)
0x300331
(8 bits)
D7–6 SPT7[1:0]
FPT7 interrupt input port select
SPT7[1:0]
Port
0x0 R/W
0x3
0x2
0x1
0x0
PA3
P17
PC7
P07
D5–4 SPT6[1:0]
FPT6 interrupt input port select
SPT6[1:0]
Port
0x0 R/W
0x3
0x2
0x1
0x0
PA2
P16
PC6
P06
D3–2 SPT5[1:0]
FPT5 interrupt input port select
SPT5[1:0]
Port
0x0 R/W
0x3
0x2
0x1
0x0
PA1
P15
PC5
P05
D1–0 SPT4[1:0]
FPT4 interrupt input port select
SPT4[1:0]
Port
0x0 R/W
0x3
0x2
0x1
0x0
PA0
P14
PC4
P04
FPT8–B
Interrupt Port
Select Register
(GPIO_FPT8B_
SEL)
0x300332
(8 bits)
D7–6 SPTB[1:0]
FPTB interrupt input port select
SPTB[1:0]
Port
0x0 R/W
0x3
0x2
0x1
0x0
P93
P83
PB3
P71
D5–4 SPTA[1:0]
FPTA interrupt input port select
SPTA[1:0]
Port
0x0 R/W
0x3
0x2
0x1
0x0
P92
P82
PB2
P42
D3–2 SPT9[1:0]
FPT9 interrupt input port select
SPT9[1:0]
Port
0x0 R/W
0x3
0x2
0x1
0x0
P91
P81
PB1
P41
D1–0 SPT8[1:0]
FPT8 interrupt input port select
SPT8[1:0]
Port
0x0 R/W
0x3
0x2
0x1
0x0
P90
P80
PB0
P40