ATtiny13 Atmel Corporation, ATtiny13 Datasheet - Page 104

• Manufacturer Part Number: ATtiny13
• Manufacturer: Atmel Corporation

Specifications of ATtiny13

• Flash (kbytes): 1 Kbytes
• Pin Count: 8
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 6
• Ext Interrupts: 6
• Usb Speed: No
• Usb Interface: No
• 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: No
• Crypto Engine: No
• Sram (kbytes): 0.06
• Eeprom (bytes): 64
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 1
• Output Compare Channels: 2
• Pwm Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

17.2.1
17.3
17.4
17.5
104
Calibration Bytes
Signature Bytes
Page Size
ATtiny13
Latching of Fuses
Note that fuse bits are locked if Lock Bit 1 (LB1) is programmed. Program the fuse bits before
programming the lock bits. The status of the fuse bits is not affected by Chip Erase.
Fuse bits can also be read by the device firmware. See section
from Firmware” on page
The fuse values are latched when the device enters programming mode and changes of the
fuse values will have no effect until the part leaves Programming mode. This does not apply to
the EESAVE fuse which will take effect once it is programmed. The fuses are also latched on
Power-up in Normal mode.
The signature area of the ATtiny13 contains two bytes of calibration data for the internal oscilla-
tor. The calibration data in the high byte of address 0x00 is for use with the oscillator set to 9.6
MHz operation. During reset, this byte is automatically written into the OSCCAL register to
ensure correct frequency of the oscillator.
There is a separate calibration byte for the internal oscillator in 4.8 MHz mode of operation but
this data is not loaded automatically. The hardware always loads the 9.6 MHz calibraiton data
during reset. To use separate calibration data for the oscillator in 4.8 MHz mode the OSCCAL
register must be updated by firmware. The calibration data for 4.8 MHz operation is located in
the high byte at address 0x01 of the signature area.
All Atmel microcontrollers have a three-byte signature code which identifies the device. This
code can be read in both serial and high-voltage programming mode, even when the device is
locked. The three bytes reside in a separate address space.
For the ATtiny13 the signature bytes are:
Table 17-5.
Table 17-6.
512 words (1K byte)
• 0x000: 0x1E (indicates manufactured by Atmel).
• 0x001: 0x90 (indicates 1 KB Flash memory).
• 0x002: 0x07 (indicates ATtiny13 device when 0x001 is 0x90).
EEPROM Size
Flash Size
64 bytes
No. of Words in a Page and No. of Pages in the Flash
No. of Words in a Page and No. of Pages in the EEPROM
99.
Page Size
Page Size
16 words
4 bytes
PCWORD
PCWORD
EEA[1:0]
PC[3:0]
No. of Pages
No. of Pages
16
32
“Reading Fuse and Lock Bits
PCPAGE
EEA[5:2]
PCPAGE
PC[8:4]
2535J–AVR–08/10
EEAMSB
PCMSB
5
8