21 BaSiC eXTeRnal COnneCTiOn DiaGRaM
S1C17153 TeChniCal Manual
Seiko epson Corporation
21-1
(Rev. 1.0)
Basic External Connection Diagram
21
P00/SIN0
P01/SOUT0
P02/SCLK0/FOUTA/REGMON
P03/EXCL0/REGMON/LFRO
P04/TOUTA0/CAPA0
P05/TOUTB0/CAPB0/#SPISS0
P07/#BZ/SDO0
P10/FOUTB/SPICLK0
P06/BZ/SDI0
S1C17153
2.0–3.6 V
SEG0
SEG31
COM0
COM3
I/O
LCD panel
[The potential of the substrate
(back of the chip) is V
SS
.]
Buzzer
V
DD
V
DD
OSC1
OSC2
V
D1
V
C1
V
C2
V
C3
CA
CB
#RESET
TEST
V
SS
C
1
C
2
C
3
C
4
C
5
X'tal1
C
P
+
Cres
C
G1
C
D1
Recommended values for external parts
External parts for the OSC1A oscillator circuit
Symbol
name
Recommended part
X'tal1
32 kHz crystal resonator
C-002RX (R
1
= 50 k
W
(Max.), C
L
= 7 pF) manufactured by SEIKO EPSON
Other
Symbol
name
Recommended value
CP
Capacitor for power supply
3.3 µF
C
G1
Gate capacitor
–
C
D1
Drain capacitor
–
Cres
Capacitor for #RESET pin
0.47 µF
C
1
Capacitor between V
D1
and V
SS
0.1 µF
C
2
Capacitor between V
C1
and V
SS
0.1 µF
C
3
Capacitor between V
C2
and V
SS
0.1 µF
C
4
Capacitor between V
C3
and V
SS
0.1 µF
C
5
Capacitor between CA and CB
0.1 µF
notes
: • The values in the above table are shown only for reference and not guaranteed.
• Crystal resonator is extremely sensitive to influence of external components and printed-circuit
boards. Before using a resonator, please contact the manufacturer for further information on
conditions of use.