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STMicroelectronics STTS2004 2.2V Memory Module Temperature Sensor

STMicroelectronics STTS2004 2.2V Memory Module Temperature Sensor is targeted for DDR4 DIMM modules in servers, desktops, and mobile personal computing platforms (laptops and other industrial applications). The STTS2004 thermal sensor (TS) is compliant with the JEDEC specification TSE2004a2. This defines memory module thermal sensor requirements for use in DRAM DIMMs (Dual Inline Memory Modules) with Serial Presence Detect (SPD). All the information concerning the DRAM module configuration (like access speed, size, and organization) can be kept write-protected in one or more of the blocks of memory.

Features

  • 2.2V memory module temperature sensor with integrated 4Kb SPD EEPROM
  • Fully compliant with JEDEC TSE2004B2 specifications
  • Operating temperature range: –20°C to +125°C
  • Single supply voltage 2.2V to 3.6V
  • 2x3mm TDFN8, height: 0.80mm (max): JEDEC MO-229, W2030D compliant RoHS compliant, halogen-free

  • Temperature sensor
    • Temperature sensor resolution: programmable (9-12 bits) 0.25°C (typ)/LSB - (10-bit) default
    • Temperature sensor accuracy (max) of: ± 1°C (from +75°C to +95°C); ± 2°C (from +40°C to +125°C); ± 3°C (from –20°C to +125°C)
    • ADC conversion time: 125ms (max) / 70ms (typ) at default resolution (10-bit)
    • Typical operating supply current 160μA (EEPROM standby)
    • Temperature hysteresis selectable set points from 0, 1.5, 3, 6.0°C
  • 4Kb SPD EEPROM
    • Functionality identical to ST's M34E04 SPD EEPROM
    • 4Kbits organized as two pages of 256 bytes each
    • Each page is composed of two 128-byte blocks
    • Software data protection for each 128-byte block
    • Byte Write within 5ms
    • 16 bytes Page Write within 5ms
    • More than 1 million write cycles
    • More than 40-year data retention

  • Two-wire bus
    • Two-wire I2C compatible serial interface
    • Supports up to 1MHz transfer rate (I2C Fast Mode+)
    • Does not initiate clock stretching
    • Supports SMBus timeout 25ms-35ms

Block Diagram

Block Diagram - STMicroelectronics STTS2004 2.2V Memory Module Temperature Sensor

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Publicado: 2017-02-28 | Actualizado: 2022-04-25