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DS17885 数据表(PDF) 20 Page - Dallas Semiconductor |
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DS17885 数据表(HTML) 20 Page - Dallas Semiconductor |
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20 / 38 page  DS17885/DS17887 20 of 38 Figure 4. DS17885/DS17887 EXTENDED REGISTER BANK DEFINITION BANK 0 BANK 1 MSB DV0 = 0 LSB MSB DV0 = 1 LSB 00 00 0D 0D 0E 0E 3F 3F 40 40 MODEL NUMBER BYTE 41 1ST BYTE SERIAL NUMBER 42 2ND BYTE SERIAL NUMBER 43 3RD BYTE SERIAL NUMBER 44 4TH BYTE SERIAL NUMBER 45 5TH BYTE SERIAL NUMBER 46 6TH BYTE SERIAL NUMBER 47 CRC BYTE 48 CENTURY BYTE 49 DATE ALARM 4A EXTENDED CONTROL REG 4A 4B EXTENDED CONTROL REG 4B 4C RESERVED 4D RESERVED 4E RTC ADDRESS - 2 4F RTC ADDRESS - 3 50 EXTENDED RAM ADDR - LSB EXTENDED 64 BYTES - USER RAM 51 EXTENDED RAM ADDR - MSB RAM 52 RESERVED 8k X 8 53 EXTENDED RAM DATA PORT 54 RESERVED 55 RESERVED 56 RESERVED 57 RESERVED 58 RESERVED 59 RESERVED 5A RESERVED 5B RESERVED 5C RESERVED 5D RESERVED 5E RTC WRITE COUNTER 5F RESERVED 7F 7F TIMEKEEPING AND CONTROL 50 BYTES - USER RAM TIMEKEEPING AND CONTROL 50 BYTES - USER RAM |
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