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AT90PWM2 Datasheet(PDF) 284 Page - ATMEL Corporation |
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AT90PWM2 Datasheet(HTML) 284 Page - ATMEL Corporation |
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284 / 361 page  284 4317J–AVR–08/10 AT90PWM2/3/2B/3B 25.7 Serial Programming Pin Mapping Table 25-9. XA1 and XA0 Coding XA1 XA0 Action when XTAL1 is Pulsed 00 Load Flash or EEPROM Address (High or low address byte determined by BS1). 0 1 Load Data (High or Low data byte for Flash determined by BS1). 1 0 Load Command 1 1 No Action, Idle Table 25-10. Command Byte Bit Coding Command Byte Command Executed 1000 0000 Chip Erase 0100 0000 Write Fuse bits 0010 0000 Write Lock bits 0001 0000 Write Flash 0001 0001 Write EEPROM 0000 1000 Read Signature Bytes and Calibration byte 0000 0100 Read Fuse and Lock bits 0000 0010 Read Flash 0000 0011 Read EEPROM Table 25-11. No. of Words in a Page and No. of Pages in the Flash Device Flash Size Page Size PCWORD No. of Pages PCPAGE PCMSB AT90PWM2/2B/3/ 3B 4K words (8K bytes) 32 words PC[4:0] 128 PC[11:5] 11 Table 25-12. No. of Words in a Page and No. of Pages in the EEPROM Device EEPROM Size Page Size PCWORD No. of Pages PCPAGE EEAMSB AT90PWM2/2B/3/ 3B 512 bytes 4 bytes EEA[1:0] 128 EEA[8:2] 8 Table 25-13. Pin Mapping Serial Programming Symbol Pins I/O Description MOSI_A PD3 I Serial Data in MISO_A PD2 O Serial Data out SCK_A PD4 I Serial Clock |
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