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ICM7170 Datasheet(PDF) 7 Page - Rochester Electronics |
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ICM7170 Datasheet(HTML) 7 Page - Rochester Electronics |
7 / 14 page ICM7170 Specification Number ICM7170_IM (IL) REV - Page 7 of 14 6 Pin Descriptions SIGNAL PIN NUMBER SOIC PIN NUMBER DESCRIPTION WR 1 19 Write Input ALE 2 20 Address Latch Enable Input CS 3 21 Chip Select Input A4-A0 4 - 8 22 - 2 Address Inputs OSC OUT 9 3 Oscillator Output OSC IN 10 4 Oscillator Input INT SOURCE 11 5 Interrupt Source INTERRUPT 12 6 Interrupt Output VSS (GND) 13 7 Digital Common VBACKUP 14 8 Battery Negative Side D0 - D7 15 - 22 9 - 16 Data I/O VDD 23 17 Positive Digital Supply RD 24 18 Read Input TABLE 1. COMMAND REGISTER FORMAT COMMAND REGISTER ADDRESS (10001b, 11h) WRITE-ONLY D7 D6 D5 D4 D3 D2 D1 D0 n/a n/a Normal/Test Mode Interrupt Enable Run/Stop 12/24 Hour Format Crystal Frequency Crystal Frequency TABLE 2. COMMAND REGISTER BIT ASSIGNMENTS D5 TEST BIT D4 INTERRUPT ENABLE D3 RUN/STOP D2 24/12 HOUR FORMAT D1 D0 CRYSTAL FREQUENCY 0 Normal Mode 0 Interrupt disabled 0 Stop 0 12-Hour Mode 0 0 32.768kHz 1 Test Mode 1 Interrupt enable 1 Run 1 24-Hour Mode 0 1 1.048576MHZ 1 0 2.097152MHz 1 1 4.194304MHz TABLE 3. ADDRESS CODES AND FUNCTIONS ADDRESS FUNCTION DATA VALUE A4 A3 A2 A1 A0 HEX D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 0 00 Counter-1/100 seconds - 0 - 99 0 0 0 0 1 01 Counter-hours - - - 0 - 23 12 Hour Mode † - - - 1 - 12 0 0 0 1 0 02 Counter-minutes - - 0 - 59 0 0 0 1 1 03 Counter-seconds - - 0 - 59 0 0 1 0 0 04 Counter-month - - - - 1 - 12 0 0 1 0 1 05 Counter-date - - - 1 - 31 0 0 1 1 0 06 Counter-year - 0 - 99 0 0 1 1 1 07 Counter-day of week - - - - - 0 - 6 0 1 0 0 0 08 RAM-1/100 seconds M 0 - 99 0 1 0 0 1 09 RAM-hours - M - 0 - 23 12 Hour Mode † M - - 1 - 12 0 1 0 1 0 0A RAM-minutes M - . . 0 - 59 0 1 0 1 1 0B RAM-seconds M - . . 0 - 59 0 1 1 0 0 0C RAM-month M - - - 1 - 12 0 1 1 0 1 0D RAM-date M - - 1 - 31 0 1 1 1 0 0E RAM-year M 0 - 99 ICM7170 |
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