NT3881D ETC-unknow, NT3881D Datasheet - Page 5

• Manufacturer Part Number: NT3881D
• Description: Dot Matrix Lcd Controller And Driver
• Manufacturer: ETC-unknow

Pin and Pad Descriptions
Pin and Pad No.
26 - 30
39 - 42
43 - 46
47 - 62
63 - 80
24, 25
33, 81
1 - 22
31
32
23
34
35
36
37
38
SEG40 - SEG23
COM1 - COM16
SEG22 - SEG1
VDDB, VDDA
OSC1, OSC2
Designation
DB0 - DB3
DB4 - DB7
V
GND
R/W
CL1
CL2
1
RS
M
D
E
- V
5
I/O
I/O
I/O
O
O
O
O
O
O
O
P
P
P
I
I
I
Power supply
Power supply
Power supply
Connection
LCD panel
LCD panel
LCD panel
External
NT3882
NT3882
NT3882
NT3882
MPU
MPU
MPU
MPU
MPU
5
Register select signal
0: Instruction register (write)
1: Data register (write, read)
Segment signal output pins
Pins connected to resistor or ceramic filter for
internal clock oscillation. For external clock
operation, clock inputs to OSC1.
Power supply for LCD driver
Clock to latch serial data D sent to NT3882.
Clock to shift serial data D
V
A-Type waveform: V
B-Type waveform: V
GND: 0V
Switch signal to convert LCD drive waveform to
AC
Character pattern data corresponding to each
common signal is transmitted serially from this
output. 0-Non selection, 1-selection.
Read/Write control signal
0: Write
1: Read
Read/Write start signal
Lower 4 tri-state bi-directional data bus for
transmitting data between MPU and NT3881D.
Not used during 4-bit operation.
Higher 4 tri-state bi-directional data bus for
transmitting data between MPU and NT3881D.
DB7 is also used as busy flag.
Segment signal output pins
Common signal output pins
DD
Busy flag, address counter (read)
: +5V
Description
DD
DD
bond to VDDA
bond to VDDB
NT3881D
V2.4