1 OVERVIEW
S1C31D50/D51 TECHNICAL MANUAL
Seiko Epson Corporation
1-9
(Rev. 2.00)
Pin
name
Assigned
signal
I/O Initial state
Tolerant
fail-safe
structure
Function
Package
48-pin 64-pin 80-pin 100-pin
P15
P15
I/O
Hi-Z
–
I/O port
✓ ✓ ✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
ADIN02
A
12-bit A/D converter Ch.0 analog signal input 2
P16
P16
I/O
Hi-Z
–
I/O port
✓ ✓ ✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
ADIN01
A
12-bit A/D converter Ch.0 analog signal input 1
P17
P17
I/O
Hi-Z
–
I/O port
✓ ✓ ✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
ADIN00
A
12-bit A/D converter Ch.0 analog signal input 0
P20
P20
I/O
Hi-Z
✓
I/O port
✓ ✓ ✓ ✓
SENB0
A
R/F converter Ch.0 sensor B oscillator pin
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P21
P21
I/O
Hi-Z
✓
I/O port
✓ ✓ ✓ ✓
SENA0
A
R/F converter Ch.0 sensor A oscillator pin
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P22
P22
I/O
Hi-Z
✓
I/O port
✓ ✓ ✓ ✓
REF0
A
R/F converter Ch.0 reference oscillator pin
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P23
P23
I/O
Hi-Z
✓
I/O port
✓ ✓ ✓ ✓
RFIN0
A
R/F converter Ch.0 oscillation input
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P24
P24
I/O
Hi-Z
✓
I/O port
–
✓ ✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P25
P25
I/O
Hi-Z
✓
I/O port
–
✓ ✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P26
P26
I/O
Hi-Z
✓
I/O port
–
✓ ✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P27
P27
I/O
Hi-Z
✓
I/O port
–
✓ ✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P30
P30
I/O
Hi-Z
✓
I/O port
✓ ✓ ✓ ✓
RFCLKO0
O
R/F converter Ch.0 clock monitor output
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P31
P31
I/O
Hi-Z
✓
I/O port
✓ ✓ ✓ ✓
REMO
O
IR remote controller transmit data output
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P32
P32
I/O
Hi-Z
✓
I/O port
✓ ✓ ✓ ✓
CLPLS
O
IR remote controller clear pulse output
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P33
P33
I/O
Hi-Z
✓
I/O port
–
✓ ✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P34
P34
I/O
Hi-Z
✓
I/O port
–
✓ ✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P35
P35
I/O
Hi-Z
✓
I/O port
– –
✓ ✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P36
P36
I/O
Hi-Z
✓
I/O port
– – –
✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P37
P37
I/O
Hi-Z
✓
I/O port
– – –
✓
UPMUX
I/O
User-selected I/O (universal port multiplexer)
P40
P40
I/O
Hi-Z
–
I/O port
✓ ✓ ✓ ✓
VREFA0
A
12-bit A/D converter Ch.0 reference voltage input
P41
P41
I/O
Hi-Z
✓
I/O port
– –
✓ ✓
P42
P42
I/O
Hi-Z
✓
I/O port
– –
✓ ✓
P43
P43
I/O
Hi-Z
✓
I/O port
–
✓ ✓ ✓
P44
P44
I/O
Hi-Z
✓
I/O port
–
✓ ✓ ✓
P45
P45
I/O
Hi-Z
✓
I/O port
✓ ✓ ✓ ✓
#ADTRG0
I
12-bit A/D converter Ch.0 trigger input
P46
P46
I/O
Hi-Z
✓
I/O port
✓ ✓ ✓ ✓
RTC1S
O
Real-time clock 1-second cycle pulse output
P47
P47
I/O
Hi-Z
✓
I/O port
– – –
✓
P50
SDACOUT_P O
O (L)
✓
Sound DAC positive output
✓ ✓ ✓ ✓
P50
I/O
I/O port