MC4002D7-SBLW EVERBOUQUET, MC4002D7-SBLW Datasheet - Page 22

• Manufacturer Part Number: MC4002D7-SBLW
• Description: LCD MODULE, ALPHANUMERIC, 40X2
• Manufacturer: EVERBOUQUET

Specifications of MC4002D7-SBLW

• No. Of Digits / Alpha: 80
• Character Count X Line: 40 X 2
• Character Size: 5.55mm
• Supply Voltage: 5V
• Display Area Width: 154mm
• Display Area Height: 15.3mm
• Operating: RoHS Compliant
• Display Mode: Transflective
• Backlighting Colour: White
• Rohs Compliant: Yes

SPLC780A1 has two 8-bit registers - IR (instruction register) and DR (data register).
In the followings, we can use the combinations of the RS pin and the R/W pin to select the IR and DR.
The IR can be written from the MPU but cannot read by the MPU.
When RS = 0 and R/W = 1, the busy flag is output to DB7.
As the busy flag =1, SPLC780A1 is in busy state and does not accept any instructions until the busy flag = 0.
The address counter assigns addresses to display data RAM and character generator RAM.
instruction for address is written in IR, the address information is sent from IR to AC.
reading from) display data RAM or character generator RAM, AC is automatically incremented by+1 (or
decremented by -1). AC contents are output to DB6 - DB0 when RS = 0 and R/W = 1.
REGISTER --- IR (Instruction Register) and DR (Data Register)
BUSY FLAG (BF)
ADDRESS COUNTER (AC)
Sunplus Technology Co., Ltd.
RS
0
0
1
1
R/W
0
1
0
1
IR write(Display clear, etc.)
Read busy flag (DB7) and address counter (DB6 - 0)
DR write (DR to Display data RAM or Character generator RAM)
DR read (Display data RAM or Character generator RAM to DR)
20
Operation
Rev.: 1.2
After writing into (or
SPLC780A1
2000.05.05
When an