UPD16488AP NEC [NEC], UPD16488AP Datasheet - Page 55

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

6.1 Control Register 1 (R0)
Note The reset command must be executed before changing this flag's setting.
Default settings (initial values set by reset command)
This command specifies the µ PD16488A's general operation modes.
RMW
DISP
STBY
BLD
IVD
HALT
ADC
COMR
RS
D
1
0
7
Note
Flag
Note
/RD
D
E
1
0
6
Table 6-1. Relationship between Display RAM Column Address and SEG Outputs
0: Address is incremented after both write access and read access.
1: Read/modify/write mode
0: Display OFF (All LCD output pins output the V
1: Display ON
0: Normal operation
1: Internal operation and oscillation are stopped. Display is OFF.
The blinking dots are specified via the blink start/end line address registers and data is set to blink data RAM.
0: Stop blinking
1: Start blinking
The number of inverted dots is specified via the inversion start/end line address registers and data is set to
inverted data RAM.
0: Stop inversion
1: Start inversion
0: Start internal operation
1: Stop internal operation (since different display modes are used, when switching between partial and normal
The column address corresponding to the SEG outputs (see Table 6-1) for displaying the contents of the display
data RAM.
This inverts (reverses) the scan direction for common outputs. (See Table 6-2)
R,/W
Table 6-2. Relationship between Common Scan Circuit and Scan Direction
(Address is incremented only after write access)
/WR
D
display modes, the LCD output pins all output the V
converter is stopped)
0
0
ADC
(D
5
SEG Output
1
)
COMR
(D
RMW
D
D
COM Output
0
0
)
7
4
0
1
DISP
D
D
0
SEG
6
7FH
3
00H
0
1
1
STBY
COM
COM
D
D
Data Sheet S15745EJ2V0DS
0
5
2
→
←
92
1
BLD
D
D
0
4
1
Column addresses
Column addresses
SS
Scan Direction
level and oscillator and DC/DC converter are operating)
Function
IVD
D
D
0
3
0
→
→
SS
level and the oscillator is operating, but the DC/DC
HALT
D
2
ADC
→
←
COM
D
COM
1
92
1
SEG
COMR
7FH
00H
D
0
128
µ µ µ µ PD16488A
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