ATtiny43U Atmel Corporation, ATtiny43U Datasheet - Page 159

• Manufacturer Part Number: ATtiny43U
• Manufacturer: Atmel Corporation

Specifications of ATtiny43U

• Flash (kbytes): 4 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 8 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 16
• Ext Interrupts: 16
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.25
• Eeprom (bytes): 64
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 0.7 to 5.5
• Operating Voltage (vcc): 0.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

20.7
Table 20-7.
8048B–AVR–03/09
Symbol
V
V
V
V
V
I
V
t
I
f
T
D
V
LOAD
START
IN
S
START
BAT
STOP
BOOST
CC
RPP
S
BATOL
SW
Boost Converter Characteristics
Parameter
Start Voltage
Input Voltage
Shutdown Voltage
Output Voltage
Load Current
Output Voltage Ripple
Start-up Time
Current consumption of entire
device
Switching frequency
Switching period
Duty Cycle
Lowest V
device recovers from overload
Load Regulation:
Line Regulation:
Temperature Regulation:
Characteristics of Boost Converter. T = -20°C ... +85°C, unless otherwise noted
V
-----------------------------------------------------------------------------
V
-----------------------------------------------------------------------------
V
---------------------------------------------------------------------------
CC
CC
CC
LOADMIN
TEMPMAX
VBATMAX
BAT
V
V
V
CC
CC
CC
voltage where
LOADMAX
TEMPNOM
VBATNOM
–
–
–
V
V
V
CC
CC
CC
LOADMAX
VBATMIN
TEMPMIN
V
Condition
Active Mode, I
Low Current Mode
V
V
V
V
MCU not powered
V
MCU not powered
V
MCU in Power Down, WD disabled
V
MCU active, 4MHz
T
Output overload or short circuit removed
T = 25°C, V
Boost converter in Active Mode
T = 25°C, I
Boost converter in Active Mode
V
Boost converter in Active Mode
S
BAT
BAT
BAT
BAT
BAT
BAT
BAT
BAT
BAT
= 1 / f
= 0.7V
= 1.0V
= 1.0V, I
= Step Change from 0V to 1.2V
= 0.45V, Converter in Stop Mode
= 1.05V, Converter in Stop Mode
= 1.2V, Active Low Current Mode
= 1.2V, Active Regulated Mode
= 1.2V, I
S
LOAD
BAT
LOAD
LOAD
LOAD
= 1.2V
= 1mA
= 30mA, C
= 1mA
> 1mA
LOAD
= 22µF
1.05
0.45
TBD
Min
0.7
2.7
1.8
75
0
0
8
3
1.05
Typ
100
100
1.2
1.0
3.0
2.7
1.0
2.3
10
2
1
2
5
5
TBD
Max
1.35
13.3
125
1.8
0.7
3.3
3.6
10
30
72
Unit
kHz
mA
mA
mV
mA
ms
µA
µA
µA
µs
%
%
%
%
V
V
V
V
V
V
V
159