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HT56R22 Datasheet(PDF) 92 Page - Holtek Semiconductor Inc

Part # HT56R22
Description  TinyPowerTM A/D Type 8-Bit OTP MCU with DAC
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT56R22 Datasheet(HTML) 92 Page - Holtek Semiconductor Inc

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HT56R22/HT56R23/HT56R24/HT56R25/HT56R26
Rev. 1.30
92
December 26, 2014
LCD Bias Control
The LCD COM driver enables a range of selections to be provided to suit the requirement of the LCD panel which is be-
ing used. The bias resistor choice is implemented using the ISEL1 and ISEL0 bits in the SCOMC register.
· SCOMC Register
Bit
76543210
Name
¾¾
ISEL
SCOMEN
COM3EN
COM2EN
COM1EN
COM0EN
R/W
¾¾
R/W
R/W
R/W
R/W
R/W
R/W
POR
¾¾
000000
Bit 7, 6
unimplemented, read as
²0²
Bit 5
ISEL: SCOM operating current selection (VDD=5V)
0: 25
mA
1: 50
mA
Bit 4
SCOMEN: SCOM module on/off control
0: disable
1: enable
SCOMn can be enable by COMnEN if SCOMEN=1
Bit 3
COM3EN: PB3 or SCOM3 selection
0: GPIO
1: SCOM3
Bit 2
COM2EN: PB2 or SCOM2 selection
0: GPIO
1: SCOM2
Bit 1
COM1EN: PB1 or SCOM1 selection
0: GPIO
1: SCOM1
Bit 0
COM0EN: PB0 or SCOM0 selection
0: GPIO
1: SCOM0


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