HM17CM256 HYNIX [Hynix Semiconductor], HM17CM256 Datasheet - Page 37

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

ACCESS WITH 8 BIT BUS EXAMPLE : GRAY MODE , ACCESS UNDER (REF, SWAP)=(0, 0)
(21) OSCILLATOR CIRCUIT
(22) POWER SUPPLY CIRCUIT
display and boosting clock to the booster. This is valid only in the master operation mode.
connect resistor between OSC
resistance length set value. To get optimum frame frequency, please check LCD and then set the
frequency of oscillator.
GLSB circuit
GLSB circuit
HM17CM256 has the CR oscillator. The output of oscillator is used as the timing signal source of
When in the master operation mode and if external clock is used, feed the clock to OSC
And feedback resistance with command can set the inner oscillator circuit of HM17CM256.
The frame frequency can be altered by changed oscillator frequency according to feedback
0
0
Palette Aj
Palette Aj
D
D
SEGSA
SEGSA
0
0
0
0
0
0
MSB
MSB
D
D
0
0
0
0
0
3
1
1
LSB
LSB
D
D
1
1
1
1
2
2
1
Palette Bj
Palette Bj
SEGSB
SEGSB
and OSC
X address :00
X address :03
D
D
0
0
0
0
3
3
0
3
MSB
MSB
D
D
2
0
0
0
0
.
4
4
H
H
LSB
LSB
D
D
1
1
1
1
5
5
Palette Cj
Palette Cj
SEGSC
SEGSC
D
D
1
1
1
1
6
6
0
3
MSB
MSB
D
D
1
1
1
1
7
7
Gradation
palette
j=0~7
Gradation control circuit
Latched data
CPU access data
Gradation palette
j=0~7
Gradation control circuit
Latched data
CPU access data
HM17CM256
1
pin or
- 37 -