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ATMEGA16 Datasheet(PDF) 271 Page - ATMEL Corporation |
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ATMEGA16 Datasheet(HTML) 271 Page - ATMEL Corporation |
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271 / 315 page  271 ATmega16(L) 2466E–AVR–10/02 Note: a = address high bits b = address low bits H = 0 – Low byte, 1 – High Byte o = data out i = data in x = don’t care Table 115. SPI 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 SPI 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 H000 000a aaaa bbbb bbbb oooo oooo Read H (high or low) data o from Program memory at word address a:b. Load Program Memory Page 0100 H000 00xx xxxx xxbb 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 000a aaaa bb xx xxxx xxxx xxxx Write Program Memory Page at address a:b. Read EEPROM Memory 1010 0000 00xx xxxa bbbb bbbb oooo oooo Read data o from EEPROM memory at address a:b. Write EEPROM Memory 1100 0000 00xx xxxa bbbb bbbb iiii iiii Write data i to EEPROM memory at address a:b. Read Lock Bits 0101 1000 0000 0000 xxxx xxxx xxoo oooo Read Lock bits. “0” = programmed, “1” = unprogrammed. See Table 102 on page 254 for details. Write Lock Bits 1010 1100 111x xxxx xxxx xxxx 11ii iiii Write Lock bits. Set bits = “0” to program Lock bits. See Table 102 on page 254 for details. Read Signature Byte 0011 0000 00xx xxxx xxxx xxbb oooo oooo Read Signature Byte o at address b. Write Fuse Bits 1010 1100 1010 0000 xxxx xxxx iiii iiii Set bits = “0” to program, “1” to unprogram. See Table 105 on page 256 for details. Write Fuse High Bits 1010 1100 1010 1000 xxxx xxxx iiii iiii Set bits = “0” to program, “1” to unprogram. See Table 104 on page 255 for details. Read Fuse Bits 0101 0000 0000 0000 xxxx xxxx oooo oooo Read Fuse bits. “0” = programmed, “1” = unprogrammed. See Table 105 on page 256 for details. Read Fuse High Bits 0101 1000 0000 1000 xxxx xxxx oooo oooo Read Fuse high bits. “0” = pro- grammed, “1” = unprogrammed. See Table 104 on page 255 for details. Read Calibration Byte 0011 1000 00xx xxxx 0000 0000 oooo oooo Read Calibration Byte |
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