BU9795AFV-LB Datasheet, PDF (10/29 Pages) Rohm – Standard LCD Segment Drivers

BU9795AFV-LB MAX 108 segments (SEG27×COM4)
Datasheet
CSB
COMMAND
Internal Signal
ICSET P2
Internal Signal
Address
ADSET”00010” RAM Write RAM Write RAM Write
・・・・・
RAM Write
DISCTL RAM Write RAM Write ・・・ RAM Write
000010 000011 000100
・・・
100010 000000 000001 000010
000011 000100 000101
Set address by ADSET command.
P2 (ICSET command) is refer to set address.
Address will be set "000010", because P2 (ICSET)="0".
When RAM data is continuously transmitted,
address will be increment automatically.
When write at 22h address, address will be
return to 00h automatically.
Because of no setting ADSET command,
it will be kept the previous address.
It will be start to write RAM data from maintained address.
The following address that write at the end is maintained.
CSB
COMMAND
Internal Signal
ICSET P2
Internal Signal
Address
ADSET ”11111” RAM Write RAM Write RAM Write
・・・・・
RAM Write
ADSET”00000”RAM Write RAM Write ・・・ RAM Write
011111 100000 100001 100010 000000 000001 000010 000011
000000 000001 000010 000011
Set address by ADSET command.
P2(ICSET command) is refer to set address.
Address will be set "011111", because P2(ICSET)="0".
New address will be set by ADSET command.
When RAM data is continuously transmitted,The following address that write at the end is maintained.
address will be increment automatically.
When write at 22h address, address will be
return to 00h automatically.
CSB
COMMAND
Internal Signal
ICSET P2
Internal Signal
Address
ICSET P2=1 ADSET ”00000” RAM Write RAM Write
・・・・・
RAM Write
ADSET”00000” RAM Write RAM Write _{・・・} RAM Write
100000 100001 100010 000000 000001 000010 000011
100000 100001 100010 000000
Set address by ADSET command.
P2(ICSET command) is refer to set address.
New address will be set by ADSET command.
Address will be set "100000", because P2(ICSET)="1".
Address will be set "100000", because P2(ICSET)="1".
(P2(ICSET) will maintain the previous address
until ICSET command input.
It will be set P2="1" by ICSET command.
When RAM data is continuously transmitted,
(ICSET command cannot set address)
address will be increment automatically. The following address that write at the end is maintained.
When write at 22h address, address will be
return to 00h automatically.
CSB
COMMAND
Internal Signal
ICSET P2
Internal Signal
Address
ICSET P2=1 ADSET ”00000” RAM Write RAM Write
・・・・・
RAM Write
ICSET P2=0 RAM Write RAM Write _{・・・} RAM Write
100000 100001 100010 000000
・・・・・
100000 100001
100010 000000 000001
Set address by ADSET command.
P2(ICSET command) is refer to set address.
It is written to RAM continuously
from the previous address.
The address maintain the previous address
When RAM data is continuously transmitted,
because it doesn't input the ADSET command
address will be increment automatically.
though ICSET P2="0" setting.
When write at 22h address, address will be
return to 00h automatically.
The following address that write at the end is maintained.
Figure 12. Address Set sequence
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