Renesas TSE2002B3CNCG8

Overview

TSE2002B3CNCG8 from Integrated Device Technology (IDT) is a JEDEC JC42.4-compliant digital temperature sensor with integrated 256-byte serial EEPROM, designed for DDR2/DDR3 DIMM modules. It delivers ±0.5°C accuracy from –20°C to +125°C, supports programmable resolution down to 0.0625°C, and features an open-drain EVENT pin for memory throttling in server and laptop memory subsystems.

For engineers reviewing the TSE2002B3CNCG8 datasheet, TSE2002B3CNCG8 pinout, TSE2002B3CNCG8 application, or TSE2002B3CNCG8 equivalent, key selection criteria include SMBus timeout compliance (25–35 ms), dual-function I²C interface (temperature + SPD EEPROM), SA0–SA2 address configuration, and write-protection modes for SPD sector locking.

Technical Context

The TSE2002B3CNCG8 integrates two independent functional blocks on a single die: a high-accuracy sigma-delta ADC-based temperature sensor with configurable hysteresis (0/1.5/3/6°C) and resolution (9–12 bit), and a 2Kbit (256×8) EEPROM organized as one block with software write protection (SWP/CWP/PSWP). Both blocks share a common 2-wire I²C/SMBus interface operating at 10–400 kHz.

It implements three distinct EVENT pin modes - Interrupt, Comparator, and Critical-Only - each governed by register-controlled polarity and status-clearing logic. The device uses separate Device Type Identifier Codes (0011b for TS registers, 1010b for SPD memory, 0110b for write-protection commands) to multiplex functions over the same bus without external logic.

Key Specifications

Pinout & Package

Package: DFN-8 (3 mm × 3 mm, 0.5 mm pitch), RoHS-compliant, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar temperature-sensing-with-SPD-EEPROM applications.

Compared with AT30TS74-MA8Y and NCP1022DR2G, the TSE2002B3CNCG8 uniquely combines JEDEC JC42.4 certification, permanent SPD write protection, and dual-mode EVENT signaling - making it the only drop-in solution for DDR2/DDR3 DIMM manufacturers requiring full specification compliance and field-programmable thermal policy enforcement.

Availability

TSE2002B3CNCG8 is available at Aetrix Electronics and suitable for DDR2/DDR3 DIMM manufacturing, server memory subsystem design, and industrial memory module calibration requiring stable component supply, long-term lifecycle support, and JEDEC-compliant thermal monitoring.

Supply support for TSE2002B3CNCG8 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Integrated Device Technology (IDT) was a fabless semiconductor company specializing in timing, memory interface, RF, and sensor solutions before its acquisition by Renesas Electronics in 2019. IDT pioneered JEDEC-compliant memory interface ICs.

The TSE2002B3CNCG8 belongs to IDT's memory module sensor product line, engineered specifically to meet JEDEC JC42.4 requirements for DDR2/DDR3 SPD and thermal monitoring - targeting DIMM manufacturers needing integrated, certified, and production-ready solutions.

FAQ

What is the primary application of the TSE2002B3CNCG8?

The TSE2002B3CNCG8 is primarily used as a JEDEC JC42.4-compliant temperature sensor and SPD EEPROM for DDR2 and DDR3 memory modules. It provides accurate thermal monitoring and stores critical DRAM configuration data such as access speed, size, and organization. Its integrated EVENT pin enables direct memory throttling in laptops, servers, and workstations - making TSE2002B3CNCG8 essential for thermal-aware memory subsystems that require both precision sensing and secure SPD storage.

Does the TSE2002B3CNCG8 support permanent write protection of SPD data?

Yes, the TSE2002B3CNCG8 supports permanent write protection of the lower 128 bytes (0x00–0x7F) via the PSWP (Permanently Set Write Protection) command. Once executed, this protection cannot be cleared by software, power cycling, or hardware reset - ensuring SPD configuration data remains immutable in deployed DIMMs. This feature is explicitly defined in the TSE2002B3CNCG8 datasheet and is a key differentiator for high-reliability memory applications where field corruption must be prevented.

What are the supported I²C/SMBus speeds for the TSE2002B3CNCG8?

The TSE2002B3CNCG8 supports standard-mode and fast-mode I²C/SMBus operation from 10 kHz to 400 kHz. Its AC characteristics guarantee tTIMEOUT of 25–35 ms, meeting strict SMBus specification requirements. The device does not support high-speed mode (>400 kHz) or clock stretching. All timing parameters - including tSU:STA, tHD:DAT, and tW - are validated across the full 3.0–3.6 V supply range and –20°C to +125°C ambient temperature, ensuring robust interoperability in multi-drop memory bus environments.

How is the slave address configured on the TSE2002B3CNCG8?

The TSE2002B3CNCG8 uses three hardware address pins - SA0, SA1, and SA2 - to configure the three LSBs of its 7-bit I²C slave address. These pins must be hard-wired to either VDDSPD or VSSSPD (not pulled via resistors) to establish a unique address. Combined with a fixed 4-bit Device Type Identifier (0011b for temperature registers, 1010b for SPD memory), this allows up to eight TSE2002B3CNCG8 devices on a single bus. The full address is validated in the TSE2002B3CNCG8 datasheet's I²C Operating Modes table.

What is the function of the EVENT pin on the TSE2002B3CNCG8?

The EVENT pin on the TSE2002B3CNCG8 is an open-drain output that signals temperature threshold violations. It operates in three configurable modes: Interrupt (latched until cleared by register write), Comparator (self-clearing when condition resolves), or Critical-Only (asserts only on TCRIT exceedance). Polarity (active-high/low) and mode are set via internal registers. The pin requires an external pull-up to VDDSPD and is used directly by memory controllers for thermal throttling - a core function confirmed in the TSE2002B3CNCG8 block diagram and pin description sections.