ATTINY43U-MUR Atmel, ATTINY43U-MUR Datasheet - Page 47
ATTINY43U-MUR
Manufacturer Part Number
ATTINY43U-MUR
Description
MCU AVR 4KB FLASH 8MHZ 20QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY43U-MUR
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
16
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
64 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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8.11
8.11.1
8048B–AVR–03/09
Register Description
ADCSRB – ADC Control and Status Register B
boost converter, connect pins V
directly to the V
• 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:
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
0x03 (0x23)
Read/Write
Initial Value
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
CC
BS
R
7
0
pin.
ACME
R/W
6
0
BAT
R/W
5
–
0
and LSW to ground and provide the device with supply
ADLAR
R/W
4
0
R/W
3
–
0
ADTS2
R/W
2
0
ADTS1
R/W
1
0
ADTS0
R/W
0
0
ADCSRB
47
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