hd66421 Renesas Electronics Corporation., hd66421 Datasheet - Page 8

• Manufacturer Part Number: hd66421
• Description: Ram-provided 160 Channel 4-level Grey Scale Driver For Dot Matrix Graphics Lcd
• Manufacturer: Renesas Electronics Corporation.

Preliminary
RMW
DISP
STBY
PWR
AMP
REV
HOLT
ADC
BIS1, 0
WLS
GRAY
DTY1, 0
INC
RMW = 1: Read-modify-write mode; Address is incremented only after write access
RMW = 0: Address is incremented after both write and read access
DISP = 1: Display on
DISP = 0: Display off
STBY = 1:Internal operation and power circuit halt; display off
STBY = 0: Normal operation
PWR = 1: Output 'High' from DCON
PWR = 0: Output 'Low' from DCON
AMP = 1: OP amp enable
AMP = 0: OP amp disable
REV = 1: Reverse display
REV = 0: Normal display
HOLT = 1: Internal operation stops, Oscillator works
HOLT = 0: Internal operation starts
ADC = 1: Data in X address H'0 is output from SEG160
ADC = 0: Data in X address H'0 is output from SEG1
BIS1, 0 = (1,1): 1/8 LCD drive levels bias ratio
BIS1, 0 = (1,0): 1/9 LCD drive levels bias ratio
BIS1, 0 = (0,1): 1/10 LCD drive levels bias ratio
BIS1, 0 = (0,0): 1/11 LCD drive levels bias ratio
WLS = 1: 6-bit data is valid
WLS = 0: 8-bit data is valid
GRAY = 1: Grayscale palette is available(gray scales can be selected from 32-levels)
GRAY = 0: Grayscale palette is not available(4-gray scales fixed)
DTY1, 0 = (1,1): 1/8 display duty cycle - Partial display
DTY1, 0 = (1,0): 1/64 display duty cycle
DTY1, 0 = (0,1): 1/80 display duty cycle
DTY1, 0 = (0,0): 1/100 display duty cycle
INC = 1: X address is incremented for each access
INC = 0: Y address is incremented for each access
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Rev. 1.1E '99.02.10
HD66421