UPD16488AP NEC [NEC], UPD16488AP Datasheet - Page 35

• Manufacturer Part Number: UPD16488AP
• Description: 1/92 DUTY LCD CONTROLLER/DRIVER WITH FOUR-LEVEL GRAY SCALE, ON-CHIP RAM
• Manufacturer: NEC [NEC]

5.6.3 Use of op amp for level power supply control
problems may occur when a large-load LCD panel is used. In such cases, the display quality and power consumption
level can be improved by setting. The HPM1 and HPM0 flags in the power system control register 1 (R32) to "0, 1" to
"1, 1" to switch to the op amp driver capacity for mode settings shown in Table 5-14. Check the actual display quality before
deciding which mode to set.
from an external power source.
Although the PD16488A includes a circuit designed for low power consumption (HPM1, HPM0 = 0, 0), display quality
If setting high power mode still does not sufficiently improve the display quality, the LCD drive voltage must be provided
HPM1
0
0
1
1
Table 5-14. Op Amp Mode Setting
HPM0
Data Sheet S15745EJ2V0DS
0
1
0
1
Normal mode
Low power mode
High power mode
For power ON mode
Mode Setting
PD16488A
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