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I OUTLINE: LIST OF PINS
B-I-3-4 EPSON S1C33210 FUNCTION PART
Pin name I/O Pull-up Function
P16
EXCL5
#DMAEND1
I/O – P16: I/O port when CFP16(D6/0x402D4) = "0" (default)
EXCL5: 16-bit timer 5 event counter input when CFP16(D6/0x402D4) = "1" and IOC16(D6/0x402D6)
= "0"
#DMAEND1: HSDMA Ch. 1 end-of-transfer signal output when CFP16(D6/0x402D4) = "1" and
IOC16(D6/0x402D6) = "1"
P20
#DRD
I/O – P20: I/O port when CFP20(D0/0x402D8) = "0" (default)
#DRD: DRAM read signal output for successive RAS mode when CFP20(D0/0x402D8) = "1"
P21
#DWE
#GAAS
I/O – P21: I/O port when CFP21(D1/0x402D8) = "0" and CFEX2(D2/0x402DF) = "0" (default)
#DWE: DRAM read signal output for successive RAS mode when CFP21(D1/0x402D8) = "1" and
CFEX2(D2/0x402DF) = "0"
#GAAS: Area address strobe for GA when CFEX2(D2/0x402DF) = "1"
P22
TM0
I/O – P22: I/O port when CFP22(D2/0x402D8) = "0" (default)
TM0: 16-bit timer 0 output when CFP22(D2/0x402D8) = "1"
P23
TM1
I/O – P23: I/O port when CFP23(D3/0x402D8) = "0" (default)
TM1: 16-bit timer 1 output when CFP23(D3/0x402D8) = "1"
P24
TM2
#SRDY2
I/O – P24: I/O port when CFP24(D4/0x402D8) = "0" (default)
TM2: 16-bit timer 2 output when CFP24(D4/0x402D8) = "1"
#SRDY2: Serial I/F Ch.2 ready signal input/output when SSRDY2(D3/0x402DB) = "1" and CFP24
(D4/0x402D8) = "0"
P25
TM3
#SCLK2
I/O – P25: I/O port when CFP25(D5/0x402D8) = "0" (default)
TM3: 16-bit timer 3 output when CFP25(D5/0x402D8) = "1"
#SCLK2: Serial I/F Ch.2 clock input/output when SSCLK2(D2/0x402DB) = "1" and
CFP25(D5/0x402D8) = "0"
P26
TM4
SOUT2
I/O – P26: I/O port when CFP26(D6/0x402D8) = "0" (default)
TM4: 16-bit timer 4 output when CFP26(D6/0x402D8) = "1"
SOUT2: Serial I/F Ch.2 data output when SSOUT2(D1/0x402DB) = "1" and CFP26(D6/0x402D8) = "0"
P27
TM5
SIN2
I/O – P27: I/O port when CFP27(D7/0x402D8) = "0" (default)
TM5: 16-bit timer 5 output when CFP27(D7/0x402D8) = "1"
SIN2: Serial I/F Ch.2 data input when SSIN2(D0/0x402DB) = "1" and CFP27(D7/0x402D8) = "0"
DTR O – DTR output *1
RTS O – RTS output*1
TXD
SOUT3
O – TXD: TXD output*1 when MSEL pin input is at High level
SOUT3: SOUT3 output when MSEL pin input is at Low level
RI I – RI input *1
CTS I – CTS input *1
DCD I – DCD input *1
DSR I – DSR input *1
RXD
SIN3
I – RXD: RXD input when MSEL pin input is at High level
SIN3: SIN3 input when MSEL pin input is at Low level
CNT1 O – Mobile access control output #1
CNT2 O – Mobile access control output #2
MSEL I Pull-up Serial I/O interface Ch. 3 configuration input. Normally drive this at High level.
GOUT O – NMI interrupt request output
Note: *1 The communications macro select (MCRS) register (D[1:0]/0x200000) configures the I/O
signals to match the target mobile device.