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ATtiny25 датащи(PDF) 140 Page - ATMEL Corporation |
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ATtiny25 датащи(HTML) 140 Page - ATMEL Corporation |
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140 / 196 page ![]() 140 7598H–AVR–07/09 ATtiny25/45/85 Figure 21-2. Serial Programming Waveforms Table 21-9. Minimum Wait Delay Before Writing the Next Flash or EEPROM Location Symbol Minimum Wait Delay tWD_FLASH 4.5 ms t WD_EEPROM 4.0 ms tWD_ERASE 4.0 ms t WD_FUSE 4.5 ms Table 21-10. Serial Programming Instruction Set Instruction Instruction Format Operation Byte 1 Byte 2 Byte 3 Byte4 Programming Enable 1010 1100 0101 0011 xxxx xxxx xxxx xxxx Enable Serial Programming after RESET goes low. Chip Erase 1010 1100 100x xxxx xxxx xxxx xxxx xxxx Chip Erase EEPROM and Flash. Read Program Memory 0010 H 000 0000 000a bbbb bbbb oooo oooo Read H (high or low) data o from Program memory at word address a:b. Load Program Memory Page 0100 H 000 000x xxxx xxxb bbbb iiii iiii Write H (high or low) data i to Program memory page at word address b. Data low byte must be loaded before Data high byte is applied within the same address. Write Program Memory Page 0100 1100 0000 000a bb xx xxxx xxxx xxxx Write Program memory Page at address a:b. Read EEPROM Memory 1010 0000 000x xxxx xxbb bbbb oooo oooo Read data o from EEPROM memory at address b. Write EEPROM Memory 1100 0000 000x xxxx xxbb bbbb iiii iiii Write data i to EEPROM memory at address b. MSB MSB LSB LSB SERIAL CLOCK INPUT (SCK) SERIAL DATA INPUT (MOSI) (MISO) SAMPLE SERIAL DATA OUTPUT |
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