1 OVERVIEW
1.3.2 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
Assigned
I/O
name
signal
V
V
P
DD
DD
V
V
P
SS
SS
V
V
P
PP
PP
V
V
A
D1
D1
V
V
P
DDQSPI
DDQSPI
OSC1
OSC1
A
OSC2
OSC2
A
TEST
TEST
I
#RESET #RESET
I
P00
P00
I/O
UPMUX
I/O
P01
P01
I/O
UPMUX
I/O
P02
P02
I/O
UPMUX
I/O
P03
P03
I/O
UPMUX
I/O
P04
P04
I/O
UPMUX
I/O
P05
P05
I/O
UPMUX
I/O
P06
P06
I/O
UPMUX
I/O
P07
P07
I/O
UPMUX
I/O
P10
P10
I/O
UPMUX
I/O
ADIN07
A
P11
P11
I/O
UPMUX
I/O
ADIN06
A
P12
P12
I/O
UPMUX
I/O
ADIN05
A
P13
P13
I/O
UPMUX
I/O
ADIN04
A
P14
P14
I/O
UPMUX
I/O
ADIN03
A
1-8
= 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 1.3.2.1 Pin Description
Tolerant
Initial state
fail-safe
structure
–
–
Power supply (+)
–
–
GND
–
–
Power supply for Flash programming
–
–
V
D1
–
–
QSPI interface/P9 port group power supply
–
–
OSC1 oscillator circuit input
–
–
OSC1 oscillator circuit output
I (Pull-down)
–
Test mode enable input
I (Pull-up)
–
Reset input
Hi-Z
I/O port
✓
User-selected I/O (universal port multiplexer)
Hi-Z
I/O port
✓
User-selected I/O (universal port multiplexer)
Hi-Z
I/O port
✓
User-selected I/O (universal port multiplexer)
Hi-Z
I/O port
✓
User-selected I/O (universal port multiplexer)
Hi-Z
I/O port
✓
User-selected I/O (universal port multiplexer)
Hi-Z
I/O port
✓
User-selected I/O (universal port multiplexer)
Hi-Z
I/O port
✓
User-selected I/O (universal port multiplexer)
Hi-Z
I/O port
✓
User-selected I/O (universal port multiplexer)
Hi-Z
–
I/O port
User-selected I/O (universal port multiplexer)
12-bit A/D converter Ch.0 analog signal input 7
Hi-Z
–
I/O port
User-selected I/O (universal port multiplexer)
12-bit A/D converter Ch.0 analog signal input 6
Hi-Z
–
I/O port
User-selected I/O (universal port multiplexer)
12-bit A/D converter Ch.0 analog signal input 5
Hi-Z
–
I/O port
User-selected I/O (universal port multiplexer)
12-bit A/D converter Ch.0 analog signal input 4
Hi-Z
–
I/O port
User-selected I/O (universal port multiplexer)
12-bit A/D converter Ch.0 analog signal input 3
Seiko Epson Corporation
Function
regulator output
Package
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
– – – ✓
– – – ✓
– – – ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
– – ✓ ✓
– – ✓ ✓
– ✓ ✓ ✓
– ✓ ✓ ✓
✓ ✓ ✓ ✓
✓ ✓ ✓ ✓
S1C31D50/D51 TECHNICAL MANUAL
(Rev. 2.00)