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HT82K70E-L Datasheet(PDF) 32 Page - Holtek Semiconductor Inc

Part # HT82K70E-L
Description  I/O Type 8-Bit MCU
PDF  59 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT82K70E-L Datasheet(HTML) 32 Page - Holtek Semiconductor Inc

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HT82K70E-L/HT82K70A-L/HT82K76E-L
Rev. 1.20
32
February 1, 2011
Bit
Name
Description
7~5
LVD_sel
To Selected low voltage detector level, Bit7, 6, 5 =
000: 1.0V
001: 1.2V
010: 1.4V
011: 2.0V
100: 2.4V
101: 2.7V
110: 3.0V or 1.8V, control by CTLR register bit 0
111: 3.3V or 2.2V, control by CTLR register bit 0
4
LVD_Rd_ctrl
To control the DC/DC to check the LVD voltage
1: enable LVD
0: disable LVD (default)
3
Low battery
Flag for battery low signal (error 5%)
1: battery voltage
£ according LVD_sel voltage
0: battery voltage > according LVD_sel voltage
The user should wait at least 20
ms after set LVD_rd_ctrl and then read the corresponding
voltage Low battery signal
2
WDTEN
To control the Watchdog timer
1: enable
0: disable
1
TMR1S
To selected Timer 1 source
1: WDT OSC
0: fSYS/4
Where WDTOSC is selected as TMR1 source. WDTOSC is always enabled.
0
LVD_mod
To selected LVD_sel=110 & 111 mode
1: 1.8V/2.2V
0: 3.0V/3.3V (default)
Control Register
- CTLR for HT82K70E-L and HT82K70A-L
Bit
Name
Description
7~5
LVD_sel
To Selected low voltage detector level, Bit7, 6, 5 =
000: 1.0V
001: 1.2V
010: 1.4V
011: 2.0V
100: 2.4V
101: 2.7V
110: 3.0V
111: 3.3V
4
LVD_Rd_ctrl
To control the DC/DC to check the LVD voltage
1: enable LVD
0: disable LVD (default)
3
Low battery
Flag for battery low signal (error 5%)
1: battery voltage
£ according LVD_sel voltage
0: battery voltage > according LVD_sel voltage
The user should wait at least 20
ms after set LVD_rd_ctrl and then read the corresponding
voltage Low battery signal
2
WDTEN
To control the Watchdog timer
1: enable
0: disable
1
TMR1S
To selected Timer 1 source
1: WDT OSC
0: fSYS/4
Where WDTOSC is selected as TMR1 source. WDTOSC is always enabled.
0
¾
Unimplemented, read as
²0²
Control Register
- CTLR for HT82K76E-L



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