Datasheet ADT7408 (Analog Devices) - 6

ADT7408 Data Sheet PIN CONFIGURATION AND FUNCTION DESCRIPTIONS A0 1 8 VDD A1 2 ADT7408 7 EVENT# TOP VIEW A2 3 (Not to scale) 6 SCL
04 0
VSS 4 5 SDA
716- 5 0 Figure 4. Pin Configuration
Table 4. Pin Function Descriptions Pin No. Mnemonic Description
1 A0 SMBus/I2C Serial Bus Address Selection Pin. Logic input. Can be set to VSS or VDD. 2 A1 SMBus/I2C Serial Bus Address Selection Pin. Logic input. Can be set to VSS or VDD. 3 A2 SMBus/I2C Serial Bus Address Selection Pin. Logic input. Can be set to VSS or VDD. 4 VSS Negative Supply or Ground. 5 SDA SMBus/I2C Serial Data Input/Output. Serial data to be loaded into the registers of this device and read from these registers is provided on this pin. Open-drain configuration; it needs a pull-up resistor. 6 SCL Serial Clock Input. This is the clock input for the serial port. The serial clock is used to clock data into and clock data out from any register of the ADT7408. Open-drain configuration needs a pull-up resistor. 7 EVENT# Active Low. Open-drain event output pin. Driven low on comparator level or alert interrupt. 8 VDD Positive Supply Power. Decouple the supply to ground. Rev. A | Page 6 of 22 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS TIMING DIAGRAM ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER DETAILS MODES OF OPERATION REGISTERS ADDRESS POINTER REGISTER (WRITE ONLY) CAPABILITY REGISTER (READ ONLY) CONFIGURATION REGISTER (READ/WRITE) TEMPERATURE TRIP POINT REGISTERS Alarm Temperature Upper Boundary Trip Register (Read/Write) Alarm Temperature Lower Boundary Trip Register (Read/Write) Critical Temperature Trip Register (Read/Write) Temperature Value Register (Read Only) ID REGISTERS Manufacturer ID Register (Read Only) Device ID and Revision Register (Read Only) TEMPERATURE DATA FORMAT 12-Bit Temperature Data Format 10-Bit Temperature Data Format EVENT PIN FUNCTIONALITY Event Thresholds Alarm Window Trip Critical Trip Interrupt Mode Comparator Mode SERIAL INTERFACE Serial Bus Address SMBUS/I2C COMMUNICATIONS Writing Data to a Register Reading Data From the ADT7408 Writing to the Pointer Register for a Subsequent Read Reading from Any Pointer Register APPLICATIONS INFORMATION THERMAL RESPONSE TIME SELF-HEATING EFFECTS SUPPLY DECOUPLING TEMPERATURE MONITORING OUTLINE DIMENSIONS ORDERING GUIDE