ATtiny25 Automotive Atmel Corporation, ATtiny25 Automotive Datasheet - Page 145

• Manufacturer Part Number: ATtiny25 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATtiny25 Automotive

• Flash (kbytes): 2 Kbytes
• Pin Count: 8
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 4
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 6
• Ext Interrupts: 6
• 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): 0.12
• Eeprom (bytes): 128
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 125
• 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: 5
• Pwm Channels: 6
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

21.8.4
Figure 21-6. High-voltage Serial Programming Waveforms
7598H–AVR–07/09
SDO
PB0
PB1
PB2
PB3
SDI
SCI
SII
Programming the Flash
0
MSB
MSB
MSB
1
The Flash is organized in pages, see
the program data is latched into a page buffer. This allows one page of program data to be pro-
grammed simultaneously. The following procedure describes how to program the entire Flash
memory:
When writing or reading serial data to the ATtiny25/45/85, data is clocked on the rising edge of
the serial clock, see
Figure 21-5. Addressing the Flash which is Organized in Pages
1. Load Command “Write Flash” (see
2. Load Flash Page Buffer.
3. Load Flash High Address and Program Page. Wait after Instr. 3 until SDO goes high for
4. Repeat 2 through 3 until the entire Flash is programmed or until all data has been
5. End Page Programming by Loading Command “No Operation”.
the “Page Programming” cycle to finish.
programmed.
2
PROGRAM MEMORY
PROGRAM
COUNTER
3
PAGE
Figure
PAGE ADDRESS
WITHIN THE FLASH
PCMSB
4
21-6,
PCPAGE
5
Figure 21-7
Table 21-10 on page
Table
6
PAGEMSB
PCWORD
and
21-16).
WORD ADDRESS
WITHIN A PAGE
7
Table 21-17
LSB
INSTRUCTION WORD
LSB
LSB
8
140. When programming the Flash,
PAGE
for details.
9
ATtiny25/45/85
10
PCWORD[PAGEMSB:0]:
00
01
02
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