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ATtiny43U 데이터시트(PDF) 47 Page - ATMEL Corporation

부품명 ATtiny43U
상세설명  8-bit Microcontroller with 4K Bytes In-System Programmable Flash and Boost Converter
PDF  182 Pages
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제조업체  ATMEL [ATMEL Corporation]
홈페이지  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATtiny43U 데이터시트(HTML) 47 Page - ATMEL Corporation

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47
8048B–AVR–03/09
boost converter, connect pins V
BAT and LSW to ground and provide the device with supply
directly to the V
CC pin.
8.11
Register Description
8.11.1
ADCSRB – ADC Control and Status Register B
• Bit 7 – BS: Boost Status
The BS bit can be used to identify silent periods of the boost converter. When this bit is one the
boost converter is active and switching, i.e. it is either in Active Regulated Mode, or in the switch-
ing period of Active Low Current Mode. When this bit is zero the boost converter is not switching,
i.e. it is either in Stop Mode or in the non-switching period of Active Low Current Mode.
Alternatively, the BS bit can be programmed to return the state of the duty cycle controller, as
follows:
1.
Write 11xx xxxx to register PRR
2.
Within 3 clock cycles of the above, write 10xx xxxx to register PRR
3.
Wait (issue a single-cycle no operation)
4.
Within 5 clock cycles of first write, read the BS bit
If the BS bit now is zero the converter is operating in normal duty cycle control mode. If the bit is
one the converter is working in full duty cycle mode.
Bit
7
6543210
0x03 (0x23)
BS
ACME
–
ADLAR
–
ADTS2
ADTS1
ADTS0
ADCSRB
Read/Write
R
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
0
0000000



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