W83L771W Datasheet, PDF (5/25 Pages) Winbond – H/W Monitoring IC

W83L771W/G
1. GENERAL DESCRIPTION
W83L771W/G, a 2-channel temperature sensor with a 2-wire System Management Bus (SMBus^TM)
serial interface, is Winbond hardware monitoring IC specifically designed for notebook applications.
W83L771W/G has an on-chip thermal sensor and a remote temperature sensor input with high
accuracy. The remote temperature sensor input could be connected to thermal diode or transistor
such as 2N3904. A 10-bit plus sign ADC (Analog to Digital Converter) with 0.125°C resolutions is built
inside W83L771W/G to convert the monitored temperature value.
W83L771W/G is a high temperature accuracy, low-power consumption, SMBus^TM serial interface IC,
which is available in 8-pin, TSSOP package, and the working voltage is 3.3 V ±10%.
2. FEATURES
2.1 Monitoring Items - Temperature
„ Measure the temperature with high accuracy, up to +/- 1℃ accuracy.
„ One on-chip thermal sensor
„ One remote temperature sensor input
2.2 General
„ Interface: SMBus^TM serial interface
„ 3.3V±10% V_CC operation
„ 10 bit plus sign remote temperature data format, 0.125°C resolution
„ Programmable offset register for various thermal diodes
„ ALERT Output supports SMBus^TM 2.0 protocol
„ Programmable Temperature High/Low limit and hysteresis for ALERT and
T _ CRIT _ A output
„ SMBus^TM 2.0 compatible interface, supports TIMEOUT
2.3 Package
„ 8-pin TSSOP
Publication Release Date: March 31, 2006
-1-
Revision 0.7