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S1C17624/604/622/602/621 TeChniCal Manual
Seiko epson Corporation
1-19
name
i/O
Default
status
Function
available ( )/unavailable (–)
17624 17604 17622 17602 17621
P51
I/O I (Pull-up) I/O port pin
–
–
–
SOUT1 O
UART Ch.1 data output pin
TOUTA5 O
T16A2 Ch.0 TOUT A signal output pin
–
CAPA5 I
T16A2 Ch.0 capture A trigger signal input pin
P52
I/O I (Pull-up) I/O port pin
–
–
–
SIN1 I
UART Ch.1 data input pin
TOUTB5 O
T16A2 Ch.0 TOUT B signal output pin
–
CAPB5 I
T16A2 Ch.0 capture B trigger signal input pin
P53
I/O I (Pull-up) I/O port pin
–
–
–
#BFR I
I
2
C slave bus free request input pin
P54
I/O I (Pull-up) I/O port pin
–
–
–
LFRO O
LCD frame signal output pin
P55
I/O I (Pull-up) I/O port pin
–
–
–
TOUTA6 O
T16A2 Ch.1 TOUT A signal output pin
–
CAPA6 I
T16A2 Ch.1 capture A trigger signal input pin
P56
I/O I (Pull-up) I/O port pin
–
–
–
TOUTB6 O
T16A2 Ch.1 TOUT B signal output pin
–
CAPB6 I
T16A2 Ch.1 capture B trigger signal input pin
SeG0–35
O
O (L)
LCD segment output pins
SeG36–39
O
O (L)
LCD segment output pins
COM7–4 O
LCD common output pins
–
–
SeG40–51
O
O (L)
LCD segment output pins
–
–
–
SeG52–55
O
O (L)
LCD segment output pins
–
–
–
COM7–4 O
LCD common output pins
COM0–3
O
O (L)
LCD common output pins
#ReSeT
I
I (Pull-up) Initial reset input pin
TeST
I
I
Test input pin (Connect to V
SS
for normal operation.)
–
–
–
#TeST
I
I
Test input pin (Connect to V
DD
for normal operation.)
–
–
note: DCLK pin initial status
The DCLK pin of the S1C17624/604/622 goes high after the #RESET pin is set to 1 (after reset
status is canceled). The DCLK pin must be set to low with the pull-down resistor in the IC while
the #RESET pin is set to 0 (reset status), therefore do not connect any circuit such as a pull-up
resistor that may set the pin to high.
The S1C17602/621 DCLK pin goes high while the #RESET pin is set to 0 (reset status).