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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ATmega328P датащи(PDF) 299 Page - ATMEL Corporation |
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ATmega328P датащи(HTML) 299 Page - ATMEL Corporation |
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299 / 448 page  299 8161D–AVR–10/09 ATmega48PA/88PA/168PA/328P this byte is automatically written into the OSCCAL Register to ensure correct frequency of the calibrated RC Oscillator. 27.5 Page Size 27.6 Parallel Programming Parameters, Pin Mapping, and Commands This section describes how to parallel program and verify Flash Program memory, EEPROM Data memory, Memory Lock bits, and Fuse bits in the ATmega48PA/88PA/168PA/328P. Pulses are assumed to be at least 250 ns unless otherwise noted. 27.6.1 Signal Names In this section, some pins of the ATmega48PA/88PA/168PA/328P are referenced by signal names describing their functionality during parallel programming, see Figure 27-1 and Table 27- 13. Pins not described in the following table are referenced by pin names. The XA1/XA0 pins determine the action executed when the XTAL1 pin is given a positive pulse. The bit coding is shown in Table 27-15. When pulsing WR or OE, the command loaded determines the action executed. The different Commands are shown in Table 27-16. Table 27-11. No. of Words in a Page and No. of Pages in the Flash Device Flash Size Page Size PCWORD No. of Pages PCPAGE PCMSB ATmega48PA 2K words (4K bytes) 32 words PC[4:0] 64 PC[10:5] 10 ATmega88PA 4K words (8K bytes) 32 words PC[4:0] 128 PC[11:5] 11 ATmega168PA 8K words (16K bytes) 64 words PC[5:0] 128 PC[12:6] 12 ATmega328P 16K words (32K bytes) 64 words PC[5:0] 256 PC[13:6] 13 Table 27-12. No. of Words in a Page and No. of Pages in the EEPROM Device EEPROM Size Page Size PCWORD No. of Pages PCPAGE EEAMSB ATmega48PA 256 bytes 4 bytes EEA[1:0] 64 EEA[7:2] 7 ATmega88PA 512 bytes 4 bytes EEA[1:0] 128 EEA[8:2] 8 ATmega168PA 512 bytes 4 bytes EEA[1:0] 128 EEA[8:2] 8 ATmega328P 1K bytes 4 bytes EEA[1:0] 256 EEA[9:2] 9 |
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