Overview
The NXP SE97BTP,547 is a temperature sensor and Serial Presence Detect (SPD) device designed for use in DDR memory modules. It is compliant with the JEDEC Specification 42.4 TSE2002B and is typically mounted on DDR3 Dual In-Line Memory Modules (DIMMs) to measure DRAM temperature. The device integrates a ΔΣ Analog to Digital Converter (ADC) that updates temperature readings 10 times per second and provides 256 bytes of EEPROM memory for storing memory module and vendor information. It operates within a voltage range of 3.0 V to 3.6 V and supports communication via the I2C-bus/SMBus interface.
Key Specifications
| Parameter | Value |
|---|---|
| Temperature Measurement Range | -40 °C to +125 °C |
| Temperature Accuracy (JEDEC Grade B) | ±1 °C (between +75 °C and +95 °C) |
| EEPROM Memory | 256 bytes |
| Communication Interface | I2C-bus/SMBus |
| I2C-bus Maximum Frequency | 400 kHz |
| SMBus Timeout | 25 ms to 35 ms |
| Operating Voltage Range | 3.0 V to 3.6 V |
| ADC Update Rate | 10 times per second |
Key Features
- High accuracy temperature measurement with ±1 °C maximum accuracy between +75 °C and +95 °C.
- Integrated 256 bytes of EEPROM memory for storing memory module and vendor information.
- Supports I2C-bus and SMBus communication interfaces with speeds up to 400 kHz.
- Operates within a voltage range of 3.0 V to 3.6 V.
- ΔΣ Analog to Digital Converter (ADC) updates temperature readings 10 times per second.
- Event output with configurable polarity and status.
- Power-On Reset (POR) and shutdown mode capabilities.
Applications
- DDR3 Dual In-Line Memory Modules (DIMMs) for temperature monitoring and SPD functions.
- Mobile and server platforms requiring accurate temperature sensing and memory module identification.
- Embedded systems where precise temperature monitoring and data storage are necessary.
Q & A
- What is the temperature measurement range of the SE97BTP,547?
The SE97BTP,547 measures temperature from -40 °C to +125 °C.
- What is the accuracy of the temperature sensor?
The temperature sensor has a maximum accuracy of ±1 °C between +75 °C and +95 °C (JEDEC Grade B).
- How much EEPROM memory does the SE97BTP,547 have?
The device has 256 bytes of EEPROM memory.
- What communication interfaces does the SE97BTP,547 support?
The device supports I2C-bus and SMBus communication interfaces.
- What is the maximum frequency of the I2C-bus interface?
The maximum frequency of the I2C-bus interface is 400 kHz.
- What is the operating voltage range of the SE97BTP,547?
The operating voltage range is 3.0 V to 3.6 V.
- How often does the ADC update temperature readings?
The ADC updates temperature readings 10 times per second.
- Can the event output polarity be configured?
- Does the SE97BTP,547 support power-on reset and shutdown modes?
- What type of memory modules is the SE97BTP,547 typically used with?
