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ISL12022MR5421 Folha de dados(PDF) 4 Page - Intersil Corporation |
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ISL12022MR5421 Folha de dados(HTML) 4 Page - Intersil Corporation |
4 / 29 page ISL12022MR5421 4 FN7576.1 June 4, 2010 Table of Contents Related Literature ............................................. 1 Typical Application Circuit ................................. 1 Performance Curve ............................................ 1 Block Diagram ................................................... 2 Pin Descriptions ................................................ 2 Absolute Maximum Ratings .............................. 5 Thermal Information ........................................ 5 Electrical Specifications.................................... 5 I2C Interface Specifications .............................. 6 SDA vs SCL Timing............................................. 8 Symbol Table..................................................... 8 Typical Performance Curves ............................. 9 General Description ......................................... 10 Functional Description..................................... 11 Power Control Operation ..................................11 Normal Mode (VDD) to Battery Backup Mode (VBAT)....11 Battery Backup Mode (VBAT) to Normal Mode (VDD)....11 Power Failure Detection .................................. 11 Brownout Detection ........................................ 11 Battery Level Monitor...................................... 11 Real Time Clock Operation............................... 12 Single Event and Interrupt .............................. 12 Frequency Output Mode .................................. 12 General Purpose User SRAM ............................ 12 I2C Serial Interface ........................................ 12 Oscillator Compensation.................................. 12 Register Descriptions ...................................... 12 Real Time Clock Registers ............................... 14 Addresses [00h to 06h]................................... 14 Control and Status Registers (CSR)................. 15 Addresses [07h to 0Fh] .................................. 15 Interrupt Control Register (INT) ...................... 16 Power Supply Control Register (PWR_VDD) ....... 17 Battery Voltage Trip Voltage Register (PWR_VBAT)......17 Initial AT and DT Setting Register (ITRO).......... 17 ALPHA Register (ALPHA)................................. 19 BETA Register (BETA) ................................... 19 Final Analog Trimming Register (FATR)............. 20 Final Digital Trimming Register (FDTR) ............. 20 ALARM Registers (10h to 15h)......................... 20 Time Stamp VDD to Battery Registers (TSV2B).. 21 Time Stamp Battery to VDD Registers (TSB2V).. 21 DST Control Registers (DSTCR) ....................... 22 TEMP Registers (TEMP)................................... 23 NPPM Registers (NPPM) .................................. 23 XT0 Registers (XT0)....................................... 23 ALPHA Hot Register (ALPHAH) ......................... 24 User Registers (Accessed by Using Slave Address 1010111x) ................................................... 24 Addresses [00h to 7Fh] .................................. 24 I2C Serial Interface ......................................... 24 Protocol Conventions ..................................... 24 Device Addressing........................................... 25 Write Operation .............................................. 26 Read Operation ............................................... 26 Application Section ......................................... 26 Battery Backup Details ................................... 26 Layout Considerations .................................... 26 Measuring Oscillator Accuracy ......................... 27 Temperature Compensation Operation.............. 27 Daylight Savings Time (DST) Example.............. 28 Revision History .............................................. 28 Products.......................................................... 28 M20.3 ............................................................. 29 ISL12022MR5421 |
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Descrição semelhante - ISL12022MR5421 |
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