ATtiny43U Atmel Corporation, ATtiny43U Datasheet - Page 2
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ATtiny43U
Manufacturer Part Number
ATtiny43U
Description
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
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1. Pin Configurations
Figure 1-1.
1.1
1.1.1
1.1.2
1.1.3
2
Pin Descriptions
ATtiny43U
V
GND
Port A (PA7:PA0)
CC
Pinout of ATtiny43U
Supply voltage.
Ground.
Port A is a 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The
Port A output buffers have symmetrical drive characteristics with both high sink and source
(USCK/SCL/PCINT14)
(DO/OC1B/PCINT13)
(T1/CLKO/PCINT11) PB
(DI/OC1A/PCINT12)
(USCK/SCL/PCINT14) PB6
(OC0B/PCINT9) PB2
(DO/OC1B/PCINT13) PB5
NOTE: Bottom pad should
(T1/CLKO/PCINT11) PB3
(DI/OC1A/PCINT12) PB4
be Soldered to ground.
(OC0B/PCINT10) PB2
(OC0A/PCINT9) PB1
(INT0/PCINT15) PB7
(T0/PCINT8) PB0
PB4
PB5
PB6
QFN/MLF Top View
3
GND
VCC
1
2
3
4
5
1
2
3
4
5
6
7
8
9
10
SOIC
20
19
18
17
16
15
14
13
12
11
15
14
13
12
11
PA7 (RESET/dW/PCINT7)
PA6 (CLKI/PCINT6)
PA5 (AIN1/PCINT5)
PA4 (AIN0/PCINT4)
PA3 (ADC3/PCINT3)
PA2 (ADC2/PCINT2)
PA1 (ADC1/PCINT1)
PA0 (ADC0/PCINT0)
VBAT
LSW
PA4 (AIN0/
PA3 (ADC3/
PA2 (ADC2/
PA1 (ADC1/
PA0 (ADC0/
PCINT4
PCINT3
PCINT2
PCINT1
PCINT0
)
)
)
)
)
8048B–AVR–03/09
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