ATtiny26 Atmel Corporation, ATtiny26 Datasheet - Page 118

• Manufacturer Part Number: ATtiny26
• Manufacturer: Atmel Corporation

Specifications of ATtiny26

• Flash (kbytes): 2 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 16
• Ext Interrupts: 11
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 0.12
• Eeprom (bytes): 128
• Self Program Memory: NO
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 3
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

Reading the Signature
Bytes
Reading the
Calibration Byte
Parallel Programming
Characteristics
118
ATtiny26(L)
Figure 63. Mapping Between BS1, BS2 and the Fuse- and Lock-bits During Read
The algorithm for reading the Signature bytes is as follows (refer to Programming the Flash for
details on Command and Address loading):
1. A: Load Command “0000 1000”.
2. B: Load Address Low Byte ($00 - $02).
3. Set OE to “0” and BS1 to “0”. The selected Signature byte can now be read at DATA.
4. Set OE to “1”.
The algorithm for reading the Calibration byte is as follows (refer to Programming the Flash for
details on Command and Address loading):
1. A: Load Command “0000 1000”.
2. B: Load Address Low Byte.
3. Set OE to “0” and BS1 to “1”. The Calibration byte can now be read at DATA.
4. Set OE to “1”.
Figure 64. Parallel Programming Timing, Including some General Timing Requirements
(DATA, XA0, XA1/BS2
Fuse Low Byte
Fuse High Byte
Data & Contol
PAGEL/BS1)
Lock Bits
RDY/BSY
XTAL1
WR
BS2
t
DVXH
t
XHXL
0
1
t
t
XLDX
XLWL
t
BVWL
t
WLWH
WLRL
BS1
0
1
t
WLBX
DATA
1477K–AVR–08/10
t
WLRH