STTS424E02BDA6E STMICROELECTRONICS [STMicroelectronics], STTS424E02BDA6E Datasheet

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STTS424E02BDA6E

Manufacturer Part Number
STTS424E02BDA6E
Description
Memory module temperature sensor with a 2Kb SPD EEPROM
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
Features
Temperature sensor
2Kb SPD EEPROM
August 2007
For further information contact your local STMicroelectronics sales office.
Temperature sensor compliant with JEDEC
JC42.4, integrated with 2Kbit Serial Presence
Detect (SPD) EEPROM.
Temperature sensor resolution:
0.25°C (typ)/LSB
Temperature sensor accuracy:
– ± 1°C from +75°C to +95°C
– ± 2°C from +40°C to +125°C
– ± 3°C from –40°C to +125°C
ADC conversion time: 125ms (max)
Supply voltage: 2.7V to 3.6 V
Maximum operating supply current: 200µA
Hysteresis selectable set points from: 0, 1.5, 3,
6.0°C
Ambient temperature sensing range: -40°C to
+125°C
Functionality identical to ST’s M34E02 SPD
EEPROM
Permanent and reversible software data
protection for the lower 128 bytes
Single supply voltage: 2.7V to 3.6V
Byte and page write (up to 16 bytes)
Self-time WRITE cycle (5ms, max)
Automatic address incrementing
More than 1 million erase/WRITE cycles
Operating temperature range: -40°C to +85°C
Memory module temperature sensor
Rev 1
Two-wire bus
Packages
a. Contact local ST sales office for availability.
2-Wire SMBus/I
Supports up to 100kHz transfer rate
2mm x 3mm DFN8, height: 0.85mm (typ)
4.4mm x 3mm TSSOP8
Halogen-free, lead-free
with a 2Kb SPD EEPROM
TSSOP8 (DW)
4.4mm x 3mm
2
2mm x 3mm
DFN8 (DA)
C -compatible serial interface
STTS424E02
(a)
Data Brief
www.st.com
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STTS424E02BDA6E Summary of contents

Page 1

Features ■ Temperature sensor compliant with JEDEC JC42.4, integrated with 2Kbit Serial Presence Detect (SPD) EEPROM. Temperature sensor ■ Temperature sensor resolution: 0.25°C (typ)/LSB ■ Temperature sensor accuracy: – ± 1°C from +75°C to +95°C – ± 2°C from +40°C ...

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Description The STTS424E02 is targeted for DIMM Modules in Mobile Personal Computing Platforms (Laptops), Server Memory Modules and other industrial applications. The Thermal Sensor (TS) in the STTS424E02 is fully compliant with the JEDEC 42.4 specification, which defines Memory Module ...

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Figure 1. Logic diagram (1) SDA SCL SDA and EVENT are open drain. Table 1. Signal names Pin Symbol 1 A0 Serial Bus Address selection pin. Can be tied ...

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Figure 3. Block diagram 2Kb SPD EEPROM Software Write Protect 4/7 Temperature Sensor ADC Capability Register Configuration Register Temperature Register Address Pointer Register SMBus ...

Page 5

Part numbering Table 2. Ordering information scheme Example: Device type STTS424E02 Grade C: Maximum accuracy 75°C to 95°C = ± 2°C B: Maximum accuracy 75°C to 95°C = ± 1°C Package DA = DFN8 DW = TSSOP8 (4.4mm x 3 ...

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Revision history Table 3. Revision history Date Revision 03-Aug-2007 6/7 1 Initial release. Changes ...

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Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any ...

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