MCP98244T-BE/MNY Microchip

MCP98244 DDR4 DIMM Temperature Sensor with EEPROM for SPD Features Description Meets JEDEC Specification Microchip Technology Inc.s MCP98244 digital temperature sensor converts temperature from -40C - MCP98244 --> JC42.4-TSE2004B1 and +125C to a digital word. This sensor meets Temperature Sensor with 4 Kbit Serial JEDEC Specification JC42.4-TSE3000B1 Memory EEPROM for Serial Presence Detect (SPD) 2 Module Thermal Sensor Component. It provides an 1MHz, 2-wire I C Interface accuracy of 0.2C/1C (typical/maximum) from Specified V Range: 1.7V to 3.6V DD +75C to +95C with an operating voltage of 1.7V to Operating Current: 100 A (typ., EEPROM Idle) 3.6V. In addition, MCP98244 has an integrated Available Package: TDFN-8 EEPROM with two banks of 256 by 8 bit EEPROM (4k Bit) which can be used to store memory module details and vendor information. Temperature Sensor Features The MCP98244 digital temperature sensor comes with Temperature-to-Digital Converter (C) user-programmable registers that provide flexibility for Sensor Accuracy (Grade B): DIMM temperature-sensing applications. The registers - 0.2C/1C (typ./max.) +75C to +95C allow user-selectable settings such as Shutdown or - 0.5C/2C (typ./max.) +40C to +125C Low-Power modes and the specification of temperature Event boundaries. When the temperature - 1C/3C (typ./max.) -40C to +125C changes beyond the specified Event boundary limits, the MCP98244 outputs an Alert signal at the Event pin. Serial EEPROM Features The user has the option of setting the temperature Operating Current: Event output signal polarity as either an active-low or active-high comparator output for thermostat operation, -Write 250 A (typical) for 3 ms (typical) or as a temperature Event interrupt output for - Read 100 A (typical) microprocessor-based systems. Reversible Software Write Protect The MCP98244 EEPROM is designed specifically for Software Write Protection for each 1 Kbit Block DRAM DIMMs (Dual In-line Memory Modules) Serial Organized as two banks of 256 x 8-bit (2 Kbit x 2) Presence Detect (SPD). It has four 128 Byte pages, which can be Software Write Protected individually. Typical Applications This allows DRAM vendor and product information to be stored and write-protected. DIMM Modules for Servers, PCs, and Laptops 2 C Fast Mode This sensor has an industry standard I Temperature Sensing for Solid State Drive (SSD) Plus compatible 1 MHz serial interface. General Purpose Temperature Datalog Package Types DIMM MODULE 8-Pin 2x3 TDFN* A0 1 8 V DD A1 2 7 Event EP 9 A2 SCL 3 6 GND SDA 4 5 * Includes Exposed Thermal Pad (EP) see Table 3-1. MCP98244 2012-2013 Microchip Technology Inc. DS22327C-page 1MCP98244 NOTES: DS22327C-page 2 2012-2013 Microchip Technology Inc.