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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
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AT90SCR100 bảng dữ liệu(PDF) 381 Page - ATMEL Corporation |
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AT90SCR100 bảng dữ liệu(HTML) 381 Page - ATMEL Corporation |
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381 / 433 page  381 TPR0327AY–SMS–30Jan09 AT90SCR100 • SN2: Production year • SN3: Fab & Quarter • SN4: Lot number high order byte • SN5: Lot number low order byte • SN6: Wafer number within the lot • SN7: Chip number (on the Wafer) low order byte (row number) • SN8: Chip number (on the Wafer) high order byte (column number) 29.4 Calibration Byte The AT90SCR100 has a byte calibration value for the internal RC Oscillator. This byte resides in the high byte of address 0x000 in the signature address space. During reset, this byte is auto- matically written into the internal calibration register to ensure correct frequency of the calibrated RC Oscillator. 29.5 Page Size 29.6 Serial Downloading Both the Flash and EEPROM memory arrays can be programmed using a serial programming bus while RESET is pulled to GND. The serial programming interface consists of pins SCK, MOSI (input) and MISO (output). After RESET is set low, the Programming Enable instruction needs to be executed first before program/erase operations can be executed. 29.6.1 Serial Programming Pin Mapping Table 29-7. No. of Words in a Page and No. of Pages in the Flash Device Flash Size Page Size PCWORD No. of Pages PCPAGE PCMSB AT90SCR100 32K words (64 Kbytes) 128 words PC[6:0] 256 PC[14:7] 14 Table 29-8. No. of Words in a Page and No. of Pages in the EEPROM Device EEPROM Size Page Size PCWORD No. of Pages PCPAGE EEAMSB AT90SCR100 4 Kbytes 32 bytes EEA[2:0] 128 EEA[10:3] 10 Table 29-9. Pin Mapping Serial Programming Symbol Pins I/O Description MOSI PB5 I Serial Data in MISO PB6 O Serial Data out SCK PB7 I Serial Clock |
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