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ISL1208IU8 bảng dữ liệu(PDF) 11 Page - Intersil Corporation |
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ISL1208IU8 bảng dữ liệu(HTML) 11 Page - Intersil Corporation |
11 / 24 page 11 FN8085.8 September 12, 2008 Write capability is allowable into the RTC registers (00h to 06h) only when the WRTC bit (bit 4 of address 07h) is set to “1”. A multi-byte read or write operation is limited to one section per operation. Access to another section requires a new operation. A read or write can begin at any address within the section. A register can be read by performing a random read at any address at any time. This returns the contents of that register location. Additional registers are read by performing a sequential read. For the RTC and Alarm registers, the read instruction latches all clock registers into a buffer, so an update of the clock does not change the time being read. A sequential read will not result in the output of data from the memory array. At the end of a read, the master supplies a stop condition to end the operation and free the bus. After a read, the address remains at the previous address +1 so the user can execute a current address read and continue reading the next register. It is not necessary to set the WRTC bit prior to writing into the control and status, alarm, and user SRAM registers. TABLE 1. REGISTER MEMORY MAP ADDR. SECTION REG NAME BIT RANGE DEFAULT 7 654321 0 00h RTC SC 0 SC22 SC21 SC20 SC13 SC12 SC11 SC10 0 to 59 00h 01h MN 0 MN22 MN21 MN20 MN13 MN12 MN11 MN10 0 to 59 00h 02h HR MIL 0 HR21 HR20 HR13 HR12 HR11 HR10 0 to 23 00h 03h DT 0 0 DT21 DT20 DT13 DT12 DT11 DT10 1 to 31 00h 04h MO 0 0 0 MO20 MO13 MO12 MO11 MO10 1 to 12 00h 05h YR YR23 YR22 YR21 YR20 YR13 YR12 YR11 YR10 0 to 99 00h 06h DW 00000 DW2 DW1 DW0 0 to 6 00h 07h Control and Status SR ARST XTOSCB Reserved WRTC Reserved ALM BAT RTCF N/A 01h 08h INT IM ALME LPMODE FOBATB FO3 FO2 FO1 FO0 N/A 00h 09h Reserved N/A 00h 0Ah ATR BMATR1 BMATR0 ATR5 ATR4 ATR3 ATR2 ATR1 ATR0 N/A 00h 0Bh DTR Reserved DTR2 DTR1 DTR0 N/A 00h 0Ch Alarm SCA ESCA ASC22 ASC21 ASC20 ASC13 ASC12 ASC11 ASC10 00 to 59 00h 0Dh MNA EMNA AMN22 AMN21 AMN20 AMN13 AMN12 AMN11 AMN10 00 to 59 00h 0Eh HRA EHRA 0 AHR21 AHR20 AHR13 AHR12 AHR11 AHR10 0 to 23 00h 0Fh DTA EDTA 0 ADT21 ADT20 ADT13 ADT12 ADT11 ADT10 1 to 31 00h 10h MOA EMOA 0 0 AMO20 AMO13 AMO12 AMO11 AMO10 1 to 12 00h 11h DWA EDWA 0000 ADW12 ADW11 ADW10 0 to 6 00h 12h User USR1 USR17 USR16 USR15 USR14 USR13 USR12 USR11 USR10 N/A 00h 13h USR2 USR27 USR26 USR25 USR24 USR23 USR22 USR21 USR20 N/A 00h ISL1208 |
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