24 I/O PORTS (GPIO)
S1C33L26 TECHNICAL MANUAL
Seiko Epson Corporation
24-33
D[1:0]
CFP50[1:0]: P50 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): #SDCS (SDRAMC)
0x1 (R/W): P50 (GPIO)
0x0 (R/W): #CE7 (SRAMC) (default)
P5[6:4] Port Function Select Register (PMUX_P5_46)
Register name Address
Bit
Name
Function
Setting
Init. R/W
Remarks
P5[6:4] Port
Function Select
Register
(PMUX_P5_46)
0x30080b
(8 bits)
D7–6 –
reserved
–
–
–
0 when being read.
D5–4 CFP56[1:0] P56 port function select
CFP56[1:0]
Function
0x0 R/W Write-protected
0x3
0x2
0x1
0x0
reserved
reserved
P56
#WRH/#BSH
D3–2 CFP55[1:0] P55 port function select
CFP55[1:0]
Function
0x0 R/W
0x3
0x2
0x1
0x0
reserved
reserved
P55
#WRL
D1–0 CFP54[1:0] P54 port function select
CFP54[1:0]
Function
0x0 R/W
0x3
0x2
0x1
0x0
reserved
reserved
P54
#RD
The GPIO pins are shared with the peripheral module pins. This register is used to select how the pins are used.
D[7:6]
Reserved
D[5:4]
CFP56[1:0]: P56 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): Reserved
0x1 (R/W): P56 (GPIO)
0x0 (R/W): #WRH/#BSH (SRAMC) (default)
D[3:2]
CFP55[1:0]: P55 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): Reserved
0x1 (R/W): P55 (GPIO)
0x0 (R/W): #WRL (SRAMC) (default)
D[1:0]
CFP54[1:0]: P54 Port Function Select Bits
0x3 (R/W): Reserved
0x2 (R/W): Reserved
0x1 (R/W): P54 (GPIO)
0x0 (R/W): #RD (SRAMC) (default)
P60 Port Function Select Register (PMUX_P6_0)
Register name Address
Bit
Name
Function
Setting
Init. R/W
Remarks
P60 Port
Function Select
Register
(PMUX_P6_0)
0x30080c
(8 bits)
D7–2 –
reserved
–
–
–
0 when being read.
D1–0 CFP60[1:0] P60 port function select
CFP60[1:0]
Function
0x0 R/W Write-protected
0x3
0x2
0x1
0x0
#WDT_NMI
WDT_CLK
#WAIT
P60
The GPIO pins are shared with the peripheral module pins. This register is used to select how the pins are used.
D[7:2]
Reserved
D[1:0]
CFP60[1:0]: P60 Port Function Select Bits
0x3 (R/W): #WDT_NMI (WDT)
0x2 (R/W): WDT_CLK (WDT)
0x1 (R/W): #WAIT (SRAMC)
0x0 (R/W): P60 (GPIO) (default)