Pin Descriptions - Epson S1C31W74 Technical Manual

1.3.3 Pin Descriptions

Symbol meanings
Assigned signal: The signal listed at the top of each pin is assigned in the initial state. The pin function must be
switched via software to assign another signal (see the "I/O Ports" chapter).
I/O: I
O
I/O
P
A
Hi-Z
Initial state: I (Pull-up)
I (Pull-down) = Input with pulled down
Hi-Z
O (H)
O (L)
Tolerant fail-safe structure:
✓
Pin name Assigned signal I/O
V V
DD DD
V V
SS SS
V V
PP PP
V V
D1 D1
V V
C1–5 C1–5
C C
P1–5 P1–5
OSC1 OSC1
OSC2 OSC2
TEST TEST
#RESET #RESET
P00 P00
SDI0
UPMUX
P01 P01
SDO0
UPMUX
P02 P02
SPICLK0
UPMUX
P03 P03
#SPISS0
UPMUX
P04 P04
SENB0
UPMUX
P05 P05
SENA0
UPMUX
P06 P06
REF0
UPMUX
P07 P07
RFIN0
UPMUX
P10 P10
BZOUT
UPMUX
P11 P11
#BZOUT
UPMUX
S1C31W74 TECHNICAL MANUAL
(Rev. 1.1)
= Input
= Output
= Input/output
= Power supply
= Analog signal
= High impedance state
= Input with pulled up
= High impedance state
= High level output
= Low level output
= Over voltage tolerant fail-safe type I/O cell included (see the "I/O Ports" chapter)
Table 1.3.3.1 Pin description
Tolerant
Initial state fail-safe
structure
–
P –
P – –
P – –
A – –
P – –
A – –
A - –
A - –
I I (Pull-down) –
I I (Pull-up) –
I/O Hi-Z –
I
I/O
I/O Hi-Z –
O
I/O
I/O Hi-Z –
I/O
I/O
I/O Hi-Z –
I
I/O
I/O Hi-Z –
A
I/O
I/O Hi-Z –
A
I/O
I/O Hi-Z –
A
I/O
I/O Hi-Z –
A
I/O
I/O Hi-Z –
O
I/O
I/O Hi-Z –
O
I/O
Seiko Epson Corporation
Function
Power supply (+)
GND
Power supply for Flash programming
V regulator output
D1
LCD panel driver power supply
LCD power supply booster capacitor connect pins
OSC1 oscillator circuit input
OSC1 oscillator circuit output
Test mode enable input
Reset input
I/O port
Synchronous serial interface Ch.0 data input
User-selected I/O (universal port multiplexer)
I/O port
Synchronous serial interface Ch.0 data output
User-selected I/O (universal port multiplexer)
I/O port
Synchronous serial interface Ch.0 clock input/output
User-selected I/O (universal port multiplexer)
I/O port
Synchronous serial interface Ch.0 slave-select input
User-selected I/O (universal port multiplexer)
I/O port
R/F converter Ch.0 sensor B oscillator pin
User-selected I/O (universal port multiplexer)
I/O port
R/F converter Ch.0 sensor A oscillator pin
User-selected I/O (universal port multiplexer)
I/O port
R/F converter Ch.0 reference oscillator pin
User-selected I/O (universal port multiplexer)
I/O port
R/F converter Ch.0 oscillation input
User-selected I/O (universal port multiplexer)
I/O port
Sound generator output
User-selected I/O (universal port multiplexer)
I/O port
Sound generator inverted output
User-selected I/O (universal port multiplexer)
1 OVERVIEW
1-7