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DS1642-100 +BOM

Real Time Clock NV Timekeeping RAM

email Email: [email protected]
skype Skype: live:.cid.ab6b29428937b76
tel Tel: +852 95804164

DS1642-100 General Description

Real Time Clock (RTC) IC Clock/Calendar 2KB Parallel 24-DIP Module (0.600", 15.24mm)

Key Features

  • Integrated NV SRAM, real time clock, crystal, power fail control circuit and lithium energy source
  • Standard JEDEC bytewide 2K x 8 static RAM pinout
  • Clock registers are accessed identically to the static RAM. These registers are resident in the eight top RAM locations
  • Totally nonvolatile with over 10 years of operation in the absence of power
  • Access times of 70 ns and 100 ns
  • Quartz accuracy ±1 minute a month @ 25°C, factory calibrated
  • BCD coded year, month, date, day, hours, minutes, and seconds with leap year compensation valid up to 2100
  • Power-fail write protection allows for ±10% VCC power supply tolerance
  • Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time

Specifications

Pbfree Code No Part Life Cycle Code Obsolete
Reach Compliance Code not_compliant ECCN Code EAR99
HTS Code 8473.30.11.80 Clock Frequency-Max 0.032 MHz
External Data Bus Width 8 Information Access Method PARALLEL, DIRECT ADDRESS
Interrupt Capability N JESD-30 Code R-PDMA-P24
JESD-609 Code e0 Length 33.02 mm
Moisture Sensitivity Level 1 Number of Terminals 24
Operating Temperature-Max 70 °C Operating Temperature-Min
Power Supplies 5 V Qualification Status Not Qualified
Seated Height-Max 10.668 mm Supply Voltage-Max 5.5 V
Supply Voltage-Min 4.5 V Supply Voltage-Nom 5 V
Surface Mount NO Technology CMOS
Temperature Grade COMMERCIAL Terminal Finish TIN LEAD
Terminal Form PIN/PEG Terminal Pitch 2.54 mm
Terminal Position DUAL Time-Min SECONDS
Volatile NO Width 15.24 mm
uPs/uCs/Peripheral ICs Type TIMER, REAL TIME CLOCK

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