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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:
Initial state:
Tolerant fail-safe structure:
Pin name
Pin function
VDD
VDD
VSS
VSS
VPP
VPP
VD1
VD1
VDDQSPI
VDDQSPI
OSC1
OSC1
OSC2
OSC2
TEST
TEST
#RESET
#RESET
P00
P00
UPMUX
P01
P01
UPMUX
P02
P02
UPMUX
P03
P03
UPMUX
P04
P04
UPMUX
P05
P05
UPMUX
P06
P06
UPMUX
P07
P07
UPMUX
P10
P10
UPMUX
ADIN7
P11
P11
UPMUX
ADIN6
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
I
= Input
O
= Output
I/O
= Input/output
P
= Power supply
A
= Analog signal
Hi-Z
= High impedance state
I (Pull-up)
= Input with pulled up
I (Pull-down)
= Input with pulled down
Hi-Z
= High impedance state
O (H)
= High level output
O (L)
= 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
I/O
Initial
P
-
P
-
P
-
A
-
P
-
A
-
A
-
I
I(Pull-down)
I
I(Pull-up)
I/O
Hi-Z
I/O
Hi-Z
I/O
Hi-Z
I/O
Hi-Z
I/O
Hi-Z
I/O
Hi-Z
I/O
Hi-Z
I/O
Hi-Z
I/O
Hi-Z
I/O
Hi-Z
Seiko Epson Corporation
Tolerant
fail-safe
structure
-
Power(+)
-
GND
-
Flash Programing Power
-
VD1 Regulator Output
-
SPI interface voltage supply.
-
OSC1 oscillator input
-
OSC1 oscillator output
-
Test mode enable
-
Reset input
I/O port
✓
User-selected I/O (universal port multiplexer)
I/O port
✓
User-selected I/O (universal port multiplexer)
I/O port
✓
User-selected I/O (universal port multiplexer)
I/O port
✓
User-selected I/O (universal port multiplexer)
I/O port
✓
User-selected I/O (universal port multiplexer)
I/O port
✓
User-selected I/O (universal port multiplexer)
I/O port
✓
User-selected I/O (universal port multiplexer)
I/O port
✓
User-selected I/O (universal port multiplexer)
-
I/O port
User-selected I/O (universal port multiplexer)
ADC ch.7
-
I/O port
User-selected I/O (universal port multiplexer)
ADC ch.6
Description
1-9
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