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SDTEMP(4) Kernel Interfaces Manual SDTEMP(4) NAME sdtemp -- JEDEC JC-42.4 compatible memory module temperature sensors SYNOPSIS sdtemp* at iic? addr 0x18 sdtemp* at iic? addr 0x19 sdtemp* at iic? addr 0x1a sdtemp* at iic? addr 0x1b sdtemp* at iic? addr 0x1c sdtemp* at iic? addr 0x1d sdtemp* at iic? addr 0x1e sdtemp* at iic? addr 0x1f DESCRIPTION The sdtemp driver provides support for the Microchip Technology MCP9805/98242 and other chips that conform to JEDEC Standard 21-C section 4.7. Memory module temperature sensors are optional on DDR2 and newer DIMMs. Sensors provided by this driver, including the on-chip thresholds for the Alarm Window and Critical level, are accessed through the envsys(4) API. The sdtemp supports temperature ranges from -256 to +255 degrees C. Chips supported by the sdtemp driver include TSE2004av compliant devices and: o Analog Devices ADT7408 o Atmel AT30TS00 and AT30TSE004 o On semiconductor (Catalyst) CAT34TS02, CAT34TS02C, CAT34TS04 and CAT6095 o Giantec Semiconductor GT30TS00 and GT34TS02 o Integrated Deviced Technology TSE2002B3, TSE2002GB2, TSE2004GB2, TS3000B3, TS3000GB0, TS3000GB2 and TS30001GB2 o Maxim MAX6604 o Microchip Technology MCP9804, MCP9805, MCP9843, MCP98242, MCP98243 and MCP98244 o NXP Semiconductors SE97 and SE98 o STmicroelectronics STTS424, STTS424E, STTS2002, STTS2004 and STTS3000 SEE ALSO envsys(4), envstat(8) HISTORY The sdtemp device appeared in NetBSD 6.0. BUGS Interrupt support is unimplemented. NetBSD 7.1.2 July 28, 2016 NetBSD 7.1.2