HD66108T00 HITACHI [Hitachi Semiconductor], HD66108T00 Datasheet - Page 51

• Manufacturer Part Number: HD66108T00
• Description: (RAM-Provided 165-Channel LCD Driver for Liquid Crystal Dot Matrix Graphics)
• Manufacturer: HITACHI [Hitachi Semiconductor]

HD66108
Precautionary Notes When Using the HD66108T
(1) Install a 0.1-µF bypass capacitor as close to the LSI as possible to reduce power supply impedance
(2) Do not leave input pins open since the HD66108T is a CMOS LSI; refer to “Pin Functions” on how to
(3) When using the internal oscillation clock, attach an oscillation resistor as close to the LSI as possible
(4) Make sure to input the reset signal at power-on so that internal units operate as specified.
(5) Maintain the LCD driving power at V
Programming Restrictions
(1) After busy time is terminated, an X or Y address is not incremented until 0.5-clock time has passed. If
(2) Although the maximum output rows is 33 when 33-row-output mode from the right side is specified,
(3) Do not set the C select register’s CLN bits to 0 for the M signal of C-type waveform.
1004
which Xn pins are fixed at V4 or V5 level.
an X or Y address is read during this time period, non-updated data will be read. (The addresses are
incremented even in this case.) In addition, the address increment direction should not be changed
during this time since it will cause malfunctions.
any multiplexing duty ratio can be specified. Therefore, row output data sufficient to fill the specified
duty must be input in the Y direction. Figure 35 shows how to set row data in the case of 1/34
multiplexing duty ratio. In this case, 0s must be set in Y33 since data for the 34th row (Y33) are not
output.
(V
deal with each pin.
to reduce coupling capacitance.
CC
–GND and V
Figure 35 How to Set Row Data for 33-Row Output from the Right Side
CC
–V
EE
).
Display data area
Y0
Y1
Y2
Y3
Y30
Y31
Y32
Y33
X131
CC
X132
during standby state so that DC is not applied to an LCD, in
0
0
0
0
0
0
1
0
X133
0
0
0
0
0
1
0
0
Row data area
X163
0
1
0
0
0
0
0
0
X164
1
0
0
0
0
0
0
0
All 0’s