ATtiny43U Atmel Corporation, ATtiny43U Datasheet - Page 143

• 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

8048B–AVR–03/09
Figure 19-1. Parallel Programming
Table 19-10. Pin Name Mapping
Table 19-11. Pin Values Used to Enter Programming Mode
Programming Mode
Signal Name in
PAGEL/BS1
RDY/BSY
XA1/BS2
DATA I/O
XA0
WR
OE
PAGEL/BS1
XA1/BS2
XA0
WR
Pin
PB7-PB0
Name
PAGEL/BS1
PA0
PA1
PA2
PA3
PA5
PA6
Pin
RDY/BSY
XA1/BS2
+12 V
XA0
WR
OE
I/O
I/O
O
I
I
I
I
I
PA5
PA0
PA1
PA2
PA3
PA4
CLKI/PA6
RESET/PA7
GND
Prog_enable[3]
Prog_enable[2]
Prog_enable[1]
Prog_enable[0]
Function
Write Pulse (Active low).
CLKI Action Bit 0
CLKI Action Bit 1. Byte Select 2 (“0” selects low byte, “1”
selects 2’nd high byte).
Byte Select 1 (“0” selects low byte, “1” selects high byte).
Program Memory and EEPROM Data Page Load.
Output Enable (Active low).
0: Device is busy programming, 1: Device is ready for new
command.
Bi-directional Data bus (Output when OE is low).
Symbol
PB7 - PB0
VCC
+5V
DATA
Value
0
0
0
0
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