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MCP98242-BE/ST bảng dữ liệu(PDF) 1 Page - Microchip Technology |
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MCP98242-BE/ST bảng dữ liệu(HTML) 1 Page - Microchip Technology |
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1 / 52 page ![]() © 2009 Microchip Technology Inc. DS21996C-page 1 MCP98242 Features • Temperature Sensor + 256 Byte Serial EEPROM • EEPROM for Serial Presence Detect (SPD) • Optimized for Voltage Range: 3.0V to 3.6V • Shutdown/Standby Current: 3 µA (maximum) • 2-wire Interface: I2C™/SMBus™-Compatible • Available Packages: DFN-8, TDFN-8, TSSOP-8 Temperature Sensor Features • Temperature-to-Digital Converter • Operating Current: 200 µA (typical) • Accuracy: - ±0.5°C/±1°C (typ./max.) → +75°C to +95°C - ±1°C/±2°C (typ./max.) → +40°C to +125°C - ±2°C/±3°C (typ./max.) → -20°C to +125°C Serial EEPROM Features • Operating Current: -Write → 1.1 mA (typical) for 3.5 ms (typical) - Read → 100 µA (typical) • Permanent and Reversible Software Write Protect • Software Write Protection for the lower 128 bytes • Organized as 1 block of 256 bytes (256x8) Typical Applications • DIMM Modules • Laptops, Personal Computers and Servers • Hard Disk Drives and Other PC Peripherals Description Microchip Technology Inc.’s MCP98242 digital temperature sensor converts temperature from -40°C and +125°C to a digital word. This sensor meets JEDEC Specification JC42.4 Mobile Platform Memory Module Thermal Sensor Component. It provides an accuracy of ±0.5°C/±1°C (typical/maximum) from +75°C to +95°C. In addition, this device has an internal 256 Byte EEPROM which can be used to store memory module and vendor information. The MCP98242 digital temperature sensor comes with user-programmable registers that provide flexibility for DIMM temperature-sensing applications. The registers allow user-selectable settings such as Shutdown or Low-Power modes and the specification of temperature event and critical output boundaries. When the temperature changes beyond the specified boundary limits, the MCP98242 outputs an Event signal. 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 micropro- cessor-based systems. The Event output can also be configured as a critical temperature output. The EEPROM is designed specifically for DRAM DIMMs (Dual In-line Memory Modules) Serial Presence Detect (SPD). The lower 128 bytes (address 00h to 7Fh) can be Permanent Write Protected (PWP) or Software Reversible Write Protected (SWP). This allows DRAM vendor and product information to be stored and write protected. The upper 128 bytes (address 80h to FFh) can be used for general purpose data storage. These addresses are not write protected. This sensor has an industry standard 2-wire, I2C/ SMBus compatible serial interface, allowing up to eight devices to be controlled in a single serial bus. To maintain interchangeability with the I2C/SMBus interface the electrical specifications are specified with the operating voltage of 3.0V to 3.6V. In addition, a 40 ms (typical) time out is implemented. Package Types Memory DIMM MODULE Temperature Sensor + EEPROM MCP98242 3.3VDD_SPD SDA SCL • ±0.5°C (typ.) Sensor • 256 Byte EEPROM for SPD Event 8-Pin DFN/TDFN (2x3) * SDA GND Event SCLK MCP98242 1 2 3 4 8-Pin TSSOP A0 VDD A1 A2 8 7 6 5 SCLK Event SDA A1 A2 8 7 6 5 4 3 2 1 GND A0 VDD EP 9 * Includes Exposed Thermal Pad (EP); see Table 3-1. Memory Module Temperature Sensor w/EEPROM for SPD |
Số phần tương tự - MCP98242-BE/ST |
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Mô tả tương tự - MCP98242-BE/ST |
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