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HT66F20 Datasheet(PDF) 181 Page - Holtek Semiconductor Inc

Part # HT66F20
Description  Enhanced A/D Flash Type MCU 8-Bit MCU with EEPROM
PDF  250 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT66F20 Datasheet(HTML) 181 Page - Holtek Semiconductor Inc

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HT66F20/HT66F30/HT66F40/HT66F50/HT66F60
HT66FU30/HT66FU40/HT66FU50/HT66FU60
Rev. 1.20
181
June 4, 2010
· SCOMC Register
¨ HT66F20
Bit
76543210
Name
D7
ISEL1
ISEL0
SCOMEN
COM3EN
COM2EN
COM1EN
COM0EN
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
00000000
Bit 7
Reserved Bit
0: Correct level - bit must be reset to zero for correct operation
1: Unpredictable operation - bit must not be set high
Bit 6~5
ISEL1, ISEL0: ISEL1 ~ ISEL0: Select SCOM typical bias current (VDD=5V)
00: 25
mA
01: 50
mA
10: 100
mA
11: 200
mA
Bit 4
SCOMEN: SCOM module Control
0: Disable
1: Enable
Bit 3
COM3EN: PC3 or SCOM3 selection
0: GPIO
1: SCOM3
Bit 2
COM2EN: PC2 or SCOM2 selection
0: GPIO
1: SCOM2
Bit 1
COM1EN: PC1 or SCOM1 selection
0: GPIO
1: SCOM1
Bit 0
COM0EN: PC0 or SCOM0 selection
0: GPIO
1: SCOM0



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