Epson Arm S1C31 Series Technical Manual page 25

1 OVERVIEW
Pin Assigned
I/O Initial state
name signal
P45 P45 I/O
EXSVD1 A
P50 SDACOUT_P O
P50 I/O
P51 SDACOUT_N O
P51 I/O
P52 P52 I/O
P53 P53 I/O
P54 P54 I/O
EXOSC I
P55 P55 I/O
EXCL00 I
P56 P56 I/O
EXCL01 I
P60 P60 I/O
QSPICLK0 I/O
P61 P61 I/O
QSDIO00 I/O
P62 P62 I/O
QSDIO01 I/O
P63 P63 I/O
QSDIO02 I/O
P64 P64 I/O
QSDIO03 I/O
P65 P65 I/O
#QSPISS0 I/O
PD0 SWCLK I
PD0 I/O
PD1 SWD I/O
PD1 I/O
PD2 PD2 I/O
OSC4 A
PD3 PD3 I/O
OSC3 A
Note: In the peripheral circuit descriptions, the assigned signal name is used as the pin name.
Universal port multiplexer (UPMUX)
The universal port multiplexer (UPMUX) allows software to select the peripheral circuit input/output function
to be assigned to each pin from those listed below.
Table 1.3.2.2 Peripheral Circuit Input/output Function Selectable by UPMUX
Peripheral circuit
I C
2
(I2C)
UART
(UART3)
Synchronous serial
interface
(SPIA)
16-bit PWM timer
(T16B)
Note: Do not assign a function to two or more pins simultaneously.
1-10
Tolerant
fail-safe
structure
Hi-Z I/O port
✓
Supply voltage detector external voltage detection input 1
O (L) Sound DAC positive output
✓
I/O port
O (L) Sound DAC nagetive output
✓
I/O port
Hi-Z I/O port
✓
Hi-Z I/O port
✓
Hi-Z I/O port
✓
Clock generator external clock input
Hi-Z I/O port
✓
16-bit PWM timer Ch.0 event counter input 0
Hi-Z I/O port
✓
16-bit PWM timer Ch.0 event counter input 1
Hi-Z I/O port
✓
Quad synchronous serial interface Ch.0 clock input/output
Hi-Z I/O port
✓
Quad synchronous serial interface Ch.0 data input/output
Hi-Z I/O port
✓
Quad synchronous serial interface Ch.0 data input/output
Hi-Z I/O port
✓
Quad synchronous serial interface Ch.0 data input/output
Hi-Z I/O port
✓
Quad synchronous serial interface Ch.0 data input/output
Hi-Z I/O port
✓
Quad synchronous serial interface Ch.0 slave-select input/output
I (Pull-up) Serial-wire debugger clock input
✓
I/O port
I (Pull-up) Serial-wire debugger data input/output
✓
I/O port
Hi-Z – I/O port
OSC3 oscillator circuit output
Hi-Z – I/O port
OSC3 oscillator circuit input
Signal to be assigned I/O
SCLn I/O
SDAn I/O
USINn I
USOUTn O
SDIn I
SDOn O
SPICLKn I/O
#SPISSn I
TOUTn0/CAPn0 I/O
TOUTn1/CAPn1 I/O
TOUTn2/CAPn2 I/O
TOUTn3/CAPn3 I/O
Seiko Epson Corporation
Function
Channel number n
n = 0–2 I2C Ch.n clock input/output
I2C Ch.n data input/output
n = 0–2 UART3 Ch.n data input
UART3 Ch.n data output
n = 0–2
SPIA Ch.n data input
SPIA Ch.n data output
SPIA Ch.n clock input/output
SPIA Ch.n slave-select input
n = 0, 1
T16B Ch.n PWM output/capture input 0
T16B Ch.n PWM output/capture input 1
T16B Ch.n PWM output/capture input 2
T16B Ch.n PWM output/capture input 3
Package
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Function
S1C31D41 TECHNICAL MANUAL
(Rev. 1.1)