HM17CM256 HYNIX [Hynix Semiconductor], HM17CM256 Datasheet - Page 62

• Manufacturer Part Number: HM17CM256
• Description: 128XRGBX82 OUTPUT LCD DRIVER IC with built-in RAM
• Manufacturer: HYNIX [Hynix Semiconductor]

HM17CM256
- 62 -
(34-12) Boosting coefficient setting
(34-13) Bias setting register
(34-14) RE flag state register setting.
( reset :{B
CS
CS
CS
( reset :{VU
( reset :{TST
0
0
0
and B
register, the extension register corresponding flag should be set first, and then access it. The TST
register is that for test, and so please set to “0”.
coefficient setting of boosting circuit
The bias ratio is selected by this register.
Setting the register of command extension register(RE
RS
RS
RS
1
1
0
1
2
register.
~B
2
~VU
0
}=0
0
RD
RD
RD
, RE
1
1
1
H
0
}=0
2
, RE
WR
H
WR
read address : E
WR
0
0
0
VU
1
, RE
B
read address :D
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
2
2
RE
RE
RE
0/1
0
0
0
}=0
2
2
2
VU
B
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
H
1
RE
1
RE
RE
0/1
0
0
H
read address :F
1
1
) * : ”Don’t care”
1
VU
B
0
1
0
1
0
1
0
1
*V
0
1
0
1
0
1
0
1
H
0
RE
) * : ”Don’t care”
RE
RE
0
0/1
REG
0
0
0
0
0
amplifier gain is 1.
1/10, 1/9, 1/8, 1/7, 1/6, 1/5 biases can be selected by B
2 times boosting operation
3 times boosting operation
4 times boosting operation
5 times boosting operation
6 times boosting operation
7 times boosting operation
Operating under 1/10 bias
Operating under 1/9 bias
Operating under 1/8 bias
Operating under 1/7 bias
Operating under 1/6 bias
Operating under 1/5 bias
H
D
D
D
)
1
1
1
7
Boosting multiple
7
7
No boosting *
forbidden
forbidden
forbidden
D
D
D
1
1
1
bias
6
6
6
2
, RE
D
D
D
0
1
1
5
5
5
1
, RE
D
D
D
1
0
1
0
).
4
4
4
TST
When accessing command
D
D
D
*
*
3
3
3
0
VU
RE
D
D
B
D
2
2
2
2
2
2
VU
RE
D
D
B
D
1
1
1
1
1
1
VU
RE
D
D
B
D
0
0
0
0
0
0
2
, B
1
0