UPD17073 NEC, UPD17073 Datasheet - Page 13

• Manufacturer Part Number: UPD17073
• Description: 4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM
• Manufacturer: NEC

QFP
23
24
25
26
27
28
29
30
Pin No.
TQFP
26
27
28
29
30
31
32
33
34
V
X
X
REG1
REG
CAP
CAP
REG
DD
OUT
IN
Symbol
LCD
LCD
LCD
LCD
0
1
0
1
Positive power supply.
Supply 1.8 to 3.6 V (T
all functions.
Do not apply voltage higher than that of V
any pin other than V
Pins for connecting crystal resonator for system
clock oscillation.
Output of voltage regulator for oscillation circuit.
Connect this pin to GND via 0.1- F capacitor.
•
•
Caution The value of the LCD drive voltage differs
REG
LCD drive power pins.
CAP
Connect capacitors for doubler circuit to generate
LCD drive voltage, across these pins.
To configure doubler circuit, connect capacitors
as shown below.
LCD
LCD
1, CAP
if the values of C1, C2, and C3 are changed
because of the configuration of the doubler
circuit.
1, REG
REG
REG
CAP
CAP
LCD
LCD
LCD
LCD
LCD
LCD
1
1
0
0
0
0
DD
REG1
Function
A
.
= –20 to +70 C) to operate
C1
C2
C3
C1 = C2 = 0.1 F
C3 = 0.01 F
DD
0.1 F
pin to
CMOS push-pull
Output format
—
—
—
—
PD17072,17073
At power-ON
reset
—
—
—
—
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