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DS1691 Datasheet

Part Number DS1691
Manufacturers Dallas Semiconductor
Logo Dallas Semiconductor
Description (DS1688 / DS1691) 3 Volt/5 Volt Serialized Real Time Clock
Datasheet DS1691 DatasheetDS1691 Datasheet (PDF)

www.DataSheet4U.com DS1688/DS1691 DS1688/DS1691 3 Volt/5 Volt Serialized Real Time Clock with NV RAM Control FEATURES Incorporates industry standard DS1287 PC clock plus enhanced features: PIN ASSIGNMENT VBAUX X1 X2 RCLR AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 PWR GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 CEI CEO VCCI VCCO SQW VBAT IRQ PSEL RD GND WR ALE CS KS VBAUX X1 X2 RCLR AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 PWR GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24.

  DS1691   DS1691






Part Number DS1691
Manufacturers Texas Instruments
Logo Texas Instruments
Description Line Drivers
Datasheet DS1691 DatasheetDS1691 Datasheet (PDF)

DS1691A, DS3691 www.ti.com SNLS357E – JULY 1998 – REVISED APRIL 2013 DS3691 (RS-422/RS-423) Line Drivers with TRI-STATE Outputs Check for Samples: DS1691A, DS3691 FEATURES 1 •2 Dual RS-422 Line Driver with Mode Pin Low, or Quad RS-423 Line Driver with Mode Pin High • TRI-STATE Outputs in RS-422 Mode • Short Circuit Protection for Both Source and Sink Outputs • Outputs Will Not Clamp Line with Power Off or In TRI-STATE • 100Ω Transmission Line Drive Capability • Low ICC and IEE Power Consumpt.

  DS1691   DS1691







(DS1688 / DS1691) 3 Volt/5 Volt Serialized Real Time Clock

www.DataSheet4U.com DS1688/DS1691 DS1688/DS1691 3 Volt/5 Volt Serialized Real Time Clock with NV RAM Control FEATURES Incorporates industry standard DS1287 PC clock plus enhanced features: PIN ASSIGNMENT VBAUX X1 X2 RCLR AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 PWR GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 CEI CEO VCCI VCCO SQW VBAT IRQ PSEL RD GND WR ALE CS KS VBAUX X1 X2 RCLR AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 PWR GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 CEI CEO VCCI VCCO SQW VBAT IRQ PSEL RD GND WR ALE CS KS • +3 or +5 volt operation • 64–bit Silicon serial number • 64–bit customer specific ROM or additional serial number available control circuitry supports system power on from date/time alarm or key closure battery backup and write protection to external SRAM 12.5 pF crystal • Power • Automatic • Crystal select bit allows RTC to operate with 6 pF or • 114 bytes user NVRAM • Auxiliary battery input • RAM clear input • Century register • 32 KHz output for power management • 32–bit VCC powered elapsed time counter • 32–bit VBAT powered elapsed time counter • 16–bit power cycle counter • Compatible with functions existing BIOS for original DS1287 DS1688 28–PIN DIP (600 MIL) VBAUX NC NC RCLR AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 PWR GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 DS1688S 28–PIN SOIC (330 MIL) CEI CEO VCCI VCCO SQW NC IRQ PSEL RD NC WR ALE CS KS DS1691 28–PIN E.


2008-04-03 : SMI7030    N2540-5002RB    N2510-6002RB    N2520-6002RB    N2526-6002RB    N2534-6002RB    N2540-6002RB    N2550-6002RB    N2510-5002RB    N2520-5002RB   


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