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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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M41ST87Y bảng dữ liệu(PDF) 25 Page - STMicroelectronics |
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M41ST87Y bảng dữ liệu(HTML) 25 Page - STMicroelectronics |
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25 / 42 page  25/42 M41ST87Y, M41ST87W Table 7. TIMEKEEPER® Register Map Keys: 0 = Must be set to zero 32kE = 32kHz Output Enable Bit ABE = Alarm in Battery Back-Up Mode Enable Bit AF = Alarm flag (Read only) AFE = Alarm Flag Enable Bit BL = Battery Low Flag (Read only) BMB0-BMB4 = Watchdog Multiplier Bits CB0-CB1 = Century Bits CLR (1 and 2) = RAM Clear Bits CLR (1 and 2)EXT = RAM Clear External Bits CLRPW0 = RAM Clear Pulse Width 0 Bit CLRPW1 = RAM Clear Pulse Width 1 Bit FT = Frequency Test Bit HT = Halt Update Bit OF = Oscillator Fail Bit OFIE = Oscillator Fail Interrupt Enable Bit OUT = Output level PFOD = Power-fail Output Open Drain Bit RB0-RB1 = Watchdog Resolution Bits RPT1-RPT5 = Alarm Repeat Mode Bits RS0-RS3 = SQW Frequency S = Sign Bit SQWE = Square Wave Enable SQWOD = Square Wave Open Drain Bit ST = Stop Bit TB (1 and 2) = Tamper Bits (Read only) TCHI/TCLO (1 and 2) = Tamper Current Hi/Tamper Current Low Bits TCM (1 and 2) = Tamper Connect Mode Bits TDS (1 and 2) = Tamper Detect Sampling Bits TEB (1 and 2) = Tamper Enable Bits THS = Threshold Bit TIE (1 and 2) = Tamper Interrupt Enable Bits TPM (1 and 2) = Tamper Polarity Mode Bits TR = trec Bit WDS = Watchdog Steering Bit WDF = Watchdog flag (Read only) Addr Data Function/Range BCD Format D7 D6 D5 D4 D3 D2 D1 D0 00h 0.1 Seconds 0.01 Seconds 10s/100s Seconds 00-99 01h ST 10 Seconds Seconds Seconds 00-59 02h OFIE 10 Minutes Minutes Minutes 00-59 03h CB1 CB0 10 Hours Hours (24 Hour Format) Century/ Hours 0-1/ 00-23 04h TR THS CLRPW1 CLRPW0 32kE Day of Week Day 01-7 05h PFOD 0 10 Date Date: Day of Month Date 01-31 06h 0 0 0 10M Month Month 01-12 07h 10 Years Year Year 00-99 08h OUT FT S Calibration Control 09h WDS BMB4 BMB3 BMB2 BMB1 BMB0 RB1 RB0 Watchdog 0Ah AFE SQWE ABE Al 10M Alarm Month Al Month 01-12 0Bh RPT4 RPT5 AI 10 Date Alarm Date Al Date 01-31 0Ch RPT3 HT AI 10 Hour Alarm Hour Al Hour 00-23 0Dh RPT2 Alarm 10 Minutes Alarm Minutes Al Min 00-59 0Eh RPT1 Alarm 10 Seconds Alarm Seconds Al Sec 00-59 0Fh WDF AF 0 BL 0 OF TB1 TB2 Flags 10h 0 0 0 0 0 0 0 0 Reserved 11h 0 0 0 0 0 0 0 0 Reserved 12h 0 0 0 0 0 0 0 0 Reserved 13hRS3 RS2RS1 RS0 SQWOD 0 0 0 SQW 14h TEB1 TIE1 TCM1 TPM1 TDS1 TCHI/ TCLO1 CLR1EXT CLR1 Tamper1 15h TEB2 TIE2 TCM2 TPM2 TDS2 TCHI/ TCLO2 CLR2EXT CLR2 Tamper2 16h-1Dh ROM Serial Number 8-Byte 1Eh-1Fh Reserved 2-Byte 20h-9Fh 128 User Bytes |
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