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ATtiny43U bảng dữ liệu(PDF) 47 Page - ATMEL Corporation

tên linh kiện ATtiny43U
Giải thích chi tiết về linh kiện  8-bit Microcontroller with 4K Bytes In-System Programmable Flash and Boost Converter
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ATtiny43U bảng dữ liệu(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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