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HT48R063B Fiches technique(PDF) 26 Page - Holtek Semiconductor Inc

No de pièce HT48R063B
Description  Enhanced I/O Type 8-Bit OTP MCU
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Fabricant  HOLTEK [Holtek Semiconductor Inc]
Site Internet  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT48R063B Fiches technique(HTML) 26 Page - Holtek Semiconductor Inc

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HT48R063B/064B/065B/066B
Rev. 1.20
26
June 3, 2013
¨ HT48R066B
Bit
76543210
Name
¾
PFDCS
¾¾
PFDEN1
PFDEN0
LXTLP
CLKMOD
R/W
¾
R/W
¾¾
R/W
R/W
R/W
R/W
POR
¾
0
¾¾
0000
Bit 7, 5, 4
Unimplemented, read as
²0²
Bit 6
PFDCS: PFD clock source
0: timer0
1: timer1
Bit 3,2
PFDEN1, PFDEN0: PFD/PFD enable/disable
00: both disables
01: Reserved
10: PFD enable
11: PFD and PFD both enabled
when PFD or PFD is disabled, the related pin will have a normal I/O function.
Bit 1
LXTLP: LXT oscillator low power control function
0: LXT Oscillator quick start-up mode
1: LXT Oscillator Low Power Mode
Bit 0
CLKMOD: system clock mode selection.
0: High speed - HIRC used as system clock
1: Low speed - LXT used as system clock, HIRC oscillator stopped.
For HT48R063B/064B/065B/066B, these selections are only valid if the oscillator configuration
options have selected the HIRC+LXT.
· CTRL1 Register
Bit
76543210
Name
INTEG1
INTEG0
TBSEL1
TBSEL0
WDTEN3
WDTEN2
WDTEN1
WDTEN0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
10001010
Bit 7, 6
INTEG1, INTEG0: External interrupt edge type
00: disable
01: rising edge trigger
10: falling edge trigger
11: dual edge trigger
Bit 5, 4
TBSEL1, TBSEL0: Time base period selection
00: 2
10 ´ (1/fTP)
01: 2
11 ´ (1/fTP)
10: 2
12 ´ (1/fTP)
11: 2
13 ´ (1/fTP)
Bit 3~0
WDTEN3, WDTEN2, WDTEN1, WDTEN0: WDT function enable
1010: WDT disabled
Other values: WDT enabled - Recommended value is 0101
If the
²watchdog timer enable² is configuration option is selected, then the watchdog timer will
always be enabled and the WDTEN3~WDTEN0 control bits will have no effect.
Note:
The WDT is only disabled when both the WDT configuration option is disabled and when bits
WDTEN3~WDTEN0=1010.
The WDT is enabled when either the WDT configuration option is enabled or when bits
WDTEN3~WDTEN0
¹1010.


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