UPD16488AP NEC [NEC], UPD16488AP Datasheet - Page 53

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

5.9
is reset to its default settings. These default settings are listed in the table below.
In the PD16488A, a reset is executed when the /RES input is at low level or when a reset command is entered. The IC
Enabled: Default value is input, Disabled: Default value is not input
Notes 1. When using the /RES pin to reset, the contents of memory are not retained. Use the reset command to reset
Cautions 1. Using the /RES pin to reset initializes the shift clock counter.
Control register 1
Control register 2
X address register
Y address register
Duty setting register
AC driver inversion cycle register
AC driver inversion position shift register
Partial AC driver inversion cycle register
Partial AC driver inversion position shift register
Partial display mode setting register
Display memory access register
Display start line setting register
Blink X address register
Blink start line address register
Blink end line address register
Blink data memory access register
Inverted X address register
Inversion start line address register
Inversion end line address register
Inverted data memory access register
Partial start line address register
Gray scale data register 1 (0, 0)
Gray scale data register 2 (0, 1)
Gray scale data register 3 (1, 0)
Gray scale data register 4 (1, 1)
Partial gray scale data register 1 (0, 0)
Partial gray scale data register 2 (0, 1)
Partial gray scale data register 3 (1, 0)
Partial gray scale data register 4 (1, 1)
Power system control register 1
Power system control register 2
Power system control register 3
Electronic volume register
Partial electronic volume register
Boost adjustment register
RAM test mode setting register
Signature read register
Reset
2. Be sure to set this register again after input the reset command.
if the memory contents need to be retained.
2. Always input the reset command as the first command after power ON.
Register
Note1
Note1
Note1
Data Sheet S15745EJ2V0DS
R0
R1
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
R16
R17
R18
R19
R20
R21
R23
R24
R25
R26
R27
R28
R29
R30
R32
R33
R34
R35
R36
R37
R44
R45
Number
Enabled (DISP flag only)
Enabled (IDIS flag only)
Disabled
/RES
Reset Command
Enabled
Disabled
Disabled
Disabled
Disabled
Enabled
Enabled
Enabled
Enabled
Enabled
Note2
PD16488A
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