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HT98R068-1 Folha de dados(PDF) 72 Page - Holtek Semiconductor Inc

Nome de Peças HT98R068-1
Descrição Electrónicos  Two Way Radio 8-Bit MCU
Download  116 Pages
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Fabricante Electrônico  HOLTEK [Holtek Semiconductor Inc]
Página de início  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT98R068-1 Folha de dados(HTML) 72 Page - Holtek Semiconductor Inc

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HT98R068-1
Two Way Radio 8-Bit MCU
HT98R068-1
Two Way Radio 8-Bit MCU
DA1R Register
Bit
7
6
5
4
3
2
1
0
Name
DA17
DA16
DA15
DA14
DA1�
DA1�
DA11
DA10
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
x
x
x
x
x
x
x
x
“x” �nknown
Bits 7~0
DA17~ DA10: DAC1 output data
DA0R Register
Bit
7
6
5
4
3
2
1
0
Name
DA07
DA06
DA05
DA04
DA0�
DA0�
DA01
DA00
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
x
x
x
x
x
x
x
x
“x” �nknown
Bits 7~0
DA07~ DA00: DAC0 output data
Low Voltage Detector – LVD
The device has a Low Voltage Detector function, known as LVD. This enables the device to
monitor the power supply voltage, VDD, and provide a warning signal should it fall below a certain
level. This function may be especially useful in battery applications where the supply voltage will
gradually reduce as the battery ages, as it allows an early warning battery low signal to be generated.
LVD Register
The Low Voltage Detector is controlled using a single register, LVDC, and configuration options.
The voltage threshold level to be detected is determined using a configuration option, therefore
cannot be modified by the application program.
LVDC Register
Bit
7
6
5
4
3
2
1
0
Name
LVDO
LVDEN
R/W
R/W
R/W
POR
Bit 7~6
unimplemented, read as "0"
Bit 5
LVDO: LVD Output Flag
0: No Low Voltage Detect
1: Low Voltage Detect
Bit 4
LVDEN: Low Voltage Detector Control
0: Disable
1: Enable
Bit 3~0
unimplemented, read as "0"
LVD Operation
The Low Voltage Detector function operates by comparing the power supply voltage, VDD, with a
pre-specified voltage level voltage level setup using a configuration option. When the power supply
voltage, VDD, falls below this pre-determined value, the LVDO bit will be set high indicating a
low power supply voltage condition. The Low Voltage Detector function is supplied by a reference
voltage which will be automatically enabled. When the device is powered down the low voltage


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