參數(shù)資料
型號: ATTINY43U-MUR
廠商: Atmel
文件頁數(shù): 102/158頁
文件大小: 0K
描述: MCU AVR 4KB FLASH 8MHZ 20QFN
產(chǎn)品培訓(xùn)模塊: tinyAVR Introduction
標(biāo)準(zhǔn)包裝: 6,000
系列: AVR® ATtiny
核心處理器: AVR
芯體尺寸: 8-位
速度: 8MHz
連通性: USI
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,溫度傳感器,WDT
輸入/輸出數(shù): 16
程序存儲器容量: 4KB(2K x 16)
程序存儲器類型: 閃存
EEPROM 大小: 64 x 8
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 1.8 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 4x10b
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 20-WFQFN 裸露焊盤
包裝: 帶卷 (TR)
48
8048C–AVR–02/12
ATtiny43U
<continued>
Stop_boost:
ldi
r16,
0x00
; Disable all outputs
out
DDRA,
r16
out
DDRB,
r16
ldi
r16,
0b01000000
; 1.1Vref and ADC0
out
ADMUX,
r16
ldi
r16,
0b00000011
; Disable ADC and prescaler mclk/8 1MHz
out
ADCSRA,
r16
ldi
r16,
0b11000000
out
PRR,
r16
ldi
r16,
0b10000000
out
PRR,
r16
ldi
r16,
0b01000000
out
PRR,
r16
rjmp
Read_Boost_Status
Read_Boost_Status:
; Poll boost status bit
sbis
ADCSRB,
7
; Jump back to reset if boost is restarted
rjmp
Read_Boost_Status
; before mcu core POR or BOD reset
rjmp
Reset
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
BS
ACME
ADLAR
ADTS2
ADTS1
ADTS0
ADCSRB
Read/Write
R
R/W
R
R/W
R
R/W
Initial Value
0
0000000
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