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When the piezoelectric buzzer is driven directl and LCD panel is used by 1/4 bias
N.C.
∗2
C
G1
X'tal1
∗4
C
G2
X'tal2 or
Ceramic
C
D2
C
C
C
C
C
C
C
C
Cres
-
3 V
+
Recommended values for external parts
Symbol
Name
X'tal1
Crystal oscillator
C
Trimmer capacitor
G1
R
Resistor for CR oscillation
CR1
X'tal2
Crystal oscillator
Ceramic
Ceramic oscillator
Rf
Feedback resistor
C
Gate capacitor
G2
C
Drain capacitor
D2
R
Resistor for CR oscillation
CR3
∗
The connection diagram shown above is an example of when mask option settings are as follows:
LCD power source: Internal power supply (1/4 bias), RESET terminal: With pull-up resistor,
R51 specification: BZ output port
∗1 OSC1 = Crystal oscillation, ∗2 OSC1 = CR oscillation, ∗3 OSC3 = Crystal/Ceramic oscillation, ∗4 OSC3 = CR oscillation
Note: The above table is simply an example. Refer to Chapter 7, "ELECTRICAL CHARACTERISTICS", for
detailed characteristics.
E0C88832/88862 TECHNICAL MANUAL
V
SS
V
OSC
∗1
OSC1
OSC2
∗3
OSC3
Rf
OSC4
1
V
D1
2
V
C1
3
V
C2
V
C3
5
V
C4
6
V
C5
CA
7
CB
8
CC
CD
CE
CF
10
CG
RESET
C
P
V
DD
TEST
Recommended value
32.768 kHz, CI(Max.)=35 kΩ
5–25 pF
800 kΩ
4.9152 MHz
4 MHz
1 MΩ
15 pF (Crystal oscillator)
30 pF (Ceramic oscillator)
15 pF (Crystal oscillator)
30 pF (Ceramic oscillator)
20 kΩ
6 BASIC EXTERNAL WIRING DIAGRAM
LCD panel 51(41) x 32
E0C88832/88862
[The potential of the substrate
(back of the chip) is V
R
R
A1
A2
Piezo
Symbol
C
Capacitor between V
1
C
Capacitor between V
2
C
Capacitor between V
3
C
Capacitor between V
5
C
Capacitor between V
6
C
Booster/reducer capacitors
7
C
Booster/reducer capacitors
8
C
Booster/reducer capacitors
10
C
Capacitor for power supply
P
Cres
Capacitor for RESET terminal
R
, R
Protection resistance
A1
A2
EPSON
R26 (TOUT)
R27 (TOUT)
.]
SS
∗R34 (FOUT)
R51 (BZ)
P10 (SIN)
P11 (SOUT)
P12 (SCLK)
P13 (SRDY)
∗: R34 (FOUT) and SEG41–SEG50
are unavailable in the E0C88862.
Name
Recommended value
0.1 µF
and V
SS
D1
0.1 µF
and V
SS
C1
0.1 µF
and V
SS
C2
0.1 µF
and V
SS
C4
0.1 µF
and V
SS
C5
0.1 µF
0.1 µF
0.1 µF
3.3 µF
0.47 µF
100 Ω
K00
K01
K02
K03
K04
K05
K06
K07
K10
P14
P15
P16
P17
121
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