ATtiny43U Atmel Corporation, ATtiny43U Datasheet - Page 158

• 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

20.5
Table 20-4.
Note:
Table 20-5.
Note:
20.6
Table 20-6.
158
Symbol
Symbol
V
V
V
V
t
t
V
t
I
t
RST
HYST
BOD
POT
RST
PSR
BG
BG
INT
BG
System and Reset Characteristics
1. The Power-on Reset will not work unless the supply voltage has been below V
1. V
External Interrupt Characteristics
ATtiny43U
tested down to V
a voltage where correct operation of the microcontroller is no longer guaranteed.
BODLEVEL [2..0] Fuses
Parameter
Power-on Reset Threshold Voltage (rising)
Power-on Reset Threshold Voltage (falling)
Power-On Slope Rate
RESET Pin Threshold
Minimum pulse width on RESET Pin
Brown-out Detector Hysteresis
Min Pulse Width on Brown-out Reset
Internal bandgap reference voltage
Internal bandgap reference start-up time
Internal bandgap reference current consumption
Parameter
Minimum pulse width for asynchronous external interrupt
BOT
Reset, Brown-Out and Internal Voltage Characteristics
BODLEVEL Fuse Coding
Characteristics of Asynchronous External Interrupt
may be below nominal minimum operating voltage for some devices. For devices where this is the case, the device is
111
110
101
100
011
010
001
000
CC
= V
BOT
during the production test. This guarantees that a Brown-out Reset will occur before V
(1)
(1)
Min V
1.7
2.5
4.1
BOT
T
T
T
V
V
V
V
T
V
T
V
T
Condition
A
A
A
A
A
A
CC
CC
CC
CC
CC
CC
= 25°C
= 25°C
= 25°C
= -40 - 85°C
= -40 - 85°C
= -40 - 85°C
= 1.8V
= 3V
= 5V
= 2.7V
= 2.7V
= 2.7V,
Condition
Typ V
Reserved
1.8
2.7
4.3
BOD Disabled
BOT
0.2 V
POT
0.01
Min
Min
1.1
0.6
1.0
CC
(falling)
2000
Max V
Typ
Typ
700
400
1.4
1.3
1.1
50
40
15
50
2
2.0
2.9
4.5
BOT
0.9 V
Max
Max
1.6
1.6
1.2
70
CC
8048B–AVR–03/09
CC
Units
Units
V/ms
V
drops to
Unit
mV
µA
ns
µs
µs
ns
V
V
V
V