1 OVERVIEW
1-12
Seiko Epson Corporation
S1C17554/564 TECHNICAL MANUAL
Pin Descriptions
1.3.3
Note: The pin names described in boldface type are default settings.
3.3.1 Pin Descriptions
Table 1.
Name
I/O
Default
status
Function
Available ( )/unavailable (–)
S1C17554
S1C17564
WCSP
TQFP/
Chip
TQFP/
Chip
HVDD
–
I/O power supply pins (1.65 to 5.5 V)
LVDD
–
Core power supply pins (1.65 to 1.95 V)
VSS
–
GND pins
VPP
–
Flash programming power supply pin (7 V)
(Leave the pin open during normal operation.)
AVDD
–
Analog power supply pin (2.7 to 5.5 V)
VIN
–
Regulator input pin (2.0 to 5.5 V)
–
VOUT
–
Regulator output pin (1.8 V)
–
REGEN
I
Regulator enable input pin
–
OSC3
I
OSC3 oscillator input or external clock (LVDD level) input pin
OSC4
O
OSC3 oscillator output pin
OSC1
I
OSC1 oscillator input or external clock (LVDD level) input pin
OSC2
O
OSC1 oscillator output pin
#RESET
I
I(Pull-up) Initial reset input pin
TEST
I I(Pull-down) Test input pin (Connect to VSS for normal operation.)
P00
I/O I(Pull-up) I/O port pin
AIN0 I
A/D converter Ch.0 analog signal input pin
P01
I/O I(Pull-up) I/O port pin
AIN1 I
A/D converter Ch.1 analog signal input pin
P02
I/O I(Pull-up) I/O port pin
AIN2 I
A/D converter Ch.2 analog signal input pin
US_SSI0 I/O
USI Ch.0 slave select signal input or data input/output pin (S1C17564)
–
P03
I/O I(Pull-up) I/O port pin
AIN3 I
A/D converter Ch.3 analog signal input pin
US_SSI1 I/O
USI Ch.1 slave select signal input or data input/output pin (S1C17564)
–
P10
I/O I(Pull-up) I/O port pin
SDI0 I
SPI Ch.0 data input pin
P11
I/O I(Pull-up) I/O port pin
SDO0 O
SPI Ch.0 data output pin
P12
I/O I(Pull-up) I/O port pin
SPICLK0 I/O
SPI Ch.0 clock input/output pin
P13
I/O I(Pull-up) I/O port pin
#SPISS0 I
SPI Ch.0 slave select signal input pin
TOUT5 O
T16A Ch.2 TOUT B signal output pin
CAP5 I
T16A Ch.2 capture B trigger signal input pin
P14
I/O I(Pull-up) I/O port pin
SIN1 I
UART Ch.1 data input pin
SDI1 I
SPI Ch.1 data input pin
P15
I/O I(Pull-up) I/O port pin
SOUT1 O
UART Ch.1 data output pin
SDO1 O
SPI Ch.1 data output pin
P16
I/O I(Pull-up) I/O port pin
SCLK1 I
UART Ch.1 external clock input pin
SPICLK1 I/O
SPI Ch.1 clock input/output pin
P17
I/O I(Pull-up) I/O port pin
SCL0 I/O
I2C master SCL input/output pin
P20
I/O I(Pull-up) I/O port pin
TOUT2 O
T16A Ch.1 TOUT A signal output pin
CAP2 I
T16A Ch.1 capture A trigger signal input pin
P21
I/O I(Pull-up) I/O port pin
TOUT3 O
T16A Ch.1 TOUT B signal output pin
CAP3 I
T16A Ch.1 capture B trigger signal input pin
P22 (EXCL1) I/O I(Pull-up) I/O port pin (T16A Ch.1 external clock input pin)
FOUTB O
Clock output pin
P23 (EXCL2) I/O I(Pull-up) I/O port pin (T16A Ch.2 external clock input pin)
SDI2 I
SPI Ch.2 data input pin
P24 (EXCL3) I/O I(Pull-up) I/O port pin (T16A Ch.3 external clock input pin)
SDO2 O
SPI Ch.2 data output pin