DDR memory module temp sensor with integrated SPD
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SE97BTP Product Details
Meets JEDEC Specification 42.4 TSE2002B1, 3 Jun 2009. The NXP® Semiconductors SE97B measures temperature from -40 °C to +125 °C with JEDEC Grade B ±1 °C maximum accuracy between +75 °C and +95 °C critical zone and also provide 256 bytes of EEPROM memory communicating via the I2C-bus/SMBus. It is typically mounted on a DDR3 Dual In-Line Memory Module (DIMM) measuring the DRAM temperature in accordance with the new JEDEC (JC-42.4) Mobile Platform Memory Module Temperature Sensor Component specification and also replacing the Serial Presence Detect (SPD) which is used to store memory module and vendor information.
The SE97B thermal sensor and EEPROM operates over the VDD range of 3.0 V to 3.6 V.
The TS consists of a Δ∑ Analog to Digital Converter (ADC) that monitors and updates its own temperature readings 10 times per second, converts the reading to a digital data, and latches them into the data temperature register. User-programmable registers, the specification of upper/lower alarm and critical temperature trip points, EVENT output control, and temperature shutdown, provide flexibility for DIMM temperature-sensing applications.
When the temperature changes beyond the specified boundary limits, the SE97B outputs an EVENT signal using an open-drain output that can be pulled up between 0.9 V and 3.6 V. The user has the option of setting the EVENT output signal polarity as either an active LOW or active HIGH comparator output for thermostat operation, or as a temperature event interrupt output for microprocessor-based systems. The EVENT output can also be configured as only a critical temperature output.
The EEPROM is designed specifically for DRAM DIMMs SPD. The lower 128 bytes (address 00h to 7Fh) can be Permanent Write Protected (PWP) or Reversible Write Protected (RWP) by software. This allows DRAM vendor and product information to be stored and write protected. The upper 128 bytes (address 80h to FFh) are not write protected and can be used for general purpose data storage.
The SE97B has a single die for both the temp sensor and EEPROM for higher reliability and supports the industry-standard 2-wire I2C-bus/SMBus serial interface. The SMBus TIMEOUT function is supported to prevent system lock-ups. Manufacturer and Device ID registers provide the ability to confirm the identity of the device. Three address pins allow up to eight devices to be controlled on a single bus.
The SE98B is available as the SE97B thermal sensor only.
- JEDEC (JC-42.4) DIMM temperature sensor plus 256-byte serial EEPROM for Serial Presence Detect (SPD)
- SDA open-drain output design for operation in distributed multi-point applications
- Shutdown current: 0.1 µA (typ.) and 5.0 µA (max.)
- Power-on reset: 1.8 V (typ.)
- 2-wire interface: I2C-bus/SMBus compatible, 0 Hz to 400 kHz
- SMBus Alert Response Address and TIMEOUT 25 ms to 35 ms (programmable)
- ESD protection exceeds 2500 V HBM per JESD22-A114, 250 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101
- Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
- Available in HWSON8 package
- 11-bit ADC Temperature-to-Digital converter with 0.125 °C resolution
- Voltage range: 3.0 V to 3.6 V
- Operating current: 250 µA (typ.) and 400 µA (max.)
- Programmable hysteresis threshold: off, 0 °C, 1.5 °C, 3 °C, 6 °C
- Over/under/critical temperature EVENT output
- B-grade accuracy:
- ±0.5 °C/±1 °C (typ./max.) +75 °C to +95 °C
- ±1.0 °C/±2 °C (typ./max.) +40 °C to +125 °C
- ±2.0 °C/±3 °C (typ./max.) -40 °C to +125 °C
- Read and write voltage range: 3.0 V to 3.6 V
- Operating current:
- Write → 0.6 mA (typ.) for 3.5 ms (typ.)
- Read → 100 µA (typ.)
- Organized as 1 block of 256 bytes (256 × 8)
- 100,000 write/erase cycles and 10 years of data retention
- Permanent and Reversible Software Write Protect
- Software Write Protection for the lower 128 bytes
- DDR2 and DDR3 memory modules
- Laptops, personal computers and servers
- Enterprise networking
- Hard disk drives and other PC peripherals
- Tape & Reel (TR)/Cut Tape (CT)/Tray/Tube
- RoHs Status
- Lead free/RoHS Compliant
SE97BTP NXP Technical Data
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Estimated Delivery Time: Dec 13 - Dec 18 days (choose Expedited at checkout).
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1.We provide 90 days warranty.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
- Q: How does Jotrin guarantee that SE97BTP is the original manufacturer or agent of NXP?
- We have a professional business development department to strictly test and verify the qualifications of NXP original manufacturers and agents. All NXP suppliers must pass the qualification review before they can publish their SE97BTP devices; we pay more attention to the channels and quality of SE97BTP products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
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- You can use Jotrin's intelligent search engine, or filter by Sensors ; I2C Digital Temperature Sensors category, or find it through NXP Semiconductor Information page.
- Q: Are the NXP's SE97BTP price and stock displayed on the platform accurate?
- The NXP's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for SE97BTP, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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- Q: What is the process for returns or replacement of SE97BTP?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment.
If there is something wrong with the SE97BTP we delivered, we will accept the replacement or return of the SE97BTP only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of SE97BTP.
(3)The SE97BTP is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
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