upd16670 Renesas Electronics Corporation., upd16670 Datasheet - Page 5

• Manufacturer Part Number: upd16670
• Description: 1/17, 1/25, 1/33 Duty Lcd Controller/driver
• Manufacturer: Renesas Electronics Corporation.

3. PIN FUNCTIONS
SEG
COM
SCK
DATA
STB
/LCDOFF
/RESET
TDATA
TEST
OSC
OSC
C
C
C
V
V
V
V
1
2
3
DD
SS
LCD
LC1
+
+
+
Pin Symbol
, C
, C
, C
1
- V
IN
OUT
1
to SEG
1
2
3
to COM
-
-
-
LC5
60
33
Segment
Common
Shift clock
Data
Strobe
LCD off input
Reset
Test output
Test pin
Oscillator pins
Capacitor connection
pins
Logic power supply pin 7
Logic ground pin
Driver power supply
pins
Reference power
supply pins for driver
Pin Name
17
40 to 99
24 to39
100 to116
22
23
21
20
19
18
15, 16
5, 6
1 to 6
14
8
9 to 13
Pad No.
Data Sheet S10297EJ1V0DS00
I/O
O
O
O
O
I
I
I
I
I
I
I
Segment output pins
Common output pins
COM
Data shift clock
During the read-in operation, data is captured in the shift register
at the signal’s rising edge. During a read-out operation, data is
read from the shift register at the signal’s falling edge.
Performs input of commands and data.
Input is performed from the MSB on the rise of the shift clock.
Communication is enabled when STB is low.
When at low level, a forced LCD off operation is performed
SEGn = COMn = V
This pin is used for internal resets at low level.
This is a test output pin. Leave this pin open when using the
device.
Test mode is set when at high level.
These pins are connected to a 100-k
an external oscillator, input to OSC
These are capacitor connection pins for the boost circuit.
Connect a 1- F capacitor.
Power supply pins for logic
Ground pin for logic
Power supply pin for driver. Output pin for internal boost circuit.
Connect a 1- F capacitor between this pin and the V
boosting.
If not using the internal boost circuit, a direct driver power supply
can be input.
These are reference power supply pins for the LCD driver.
Input divided register by each external power supply pin.
1
is assigned to common for pictograph.
SS
Description
IN
and leave OSC
resistance. When using
OUT
SS
pin for
PD16670
open.
5