Datasheet ADT7420 (Analog Devices) - 5
| Hersteller | Analog Devices |
| Beschreibung | ±0.25°C Accurate, 16-Bit Digital I2C Temperature Sensor |
| Seiten / Seite | 24 / 5 — Data Sheet. ADT7420. I2C TIMING SPECIFICATIONS. Table 2. Parameter. Min. … |
| Revision | A |
| Dateiformat / Größe | PDF / 445 Kb |
| Dokumentensprache | Englisch |
Data Sheet. ADT7420. I2C TIMING SPECIFICATIONS. Table 2. Parameter. Min. Typ. Max Unit Test. Conditions/Comments. Timing Diagram. LOW
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Data Sheet ADT7420 I2C TIMING SPECIFICATIONS
TA = −40°C to +150°C, VDD = 2.7 V to 5.5 V, unless otherwise noted. All input signals are specified with rise time (tR) = fall time (tF) = 5 ns (10% to 90% of VDD) and timed from a voltage level of 1.6 V.
Table 2. Parameter Min Typ Max Unit Test Conditions/Comments
SERIAL INTERFACE 1 See Figure 2 6F6F SCL Frequency 0 400 kHz SCL High Pulse Width, tHIGH 0.6 μs SCL Low Pulse Width, tLOW 1.3 μs SCL, SDA Rise Time, tR 0.3 μs SCL, SDA Fall Time, tF 0.3 μs Hold Time (Start Condition), tHD:STA 0.6 μs After this period, the first clock is generated Setup Time (Start Condition), tSU:STA 0.6 μs Relevant for repeated start condition Data Setup Time, tSU:DAT 0.02 μs Setup Time (Stop Condition), tSU:STO 0.6 μs Data Hold Time, tHD:DAT (Master) 0.03 μs Bus-Free Time (Between Stop and Start Condition), tBUF 1.3 μs Capacitive Load for Each Bus Line, CB 400 pF 1 Sample tested during initial release to ensure compliance.
Timing Diagram t t R tF LOW tHD:STA SCL tHIGH t t t SU:STA SU:STO HD:STA tHD:DAT tSU:DAT SDA t
2
BUF
00
S
3-
P S P
01 09 Figure 2. Serial Interface Timing Diagram Rev. A | Page 5 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION PRODUCT HIGHLIGHTS FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS I2C TIMING SPECIFICATIONS Timing Diagram ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER DETAILS NORMAL MODE ONE-SHOT MODE CT and INT Operation in One-Shot Mode 1 SPS MODE SHUTDOWN FAULT QUEUE TEMPERATURE DATA FORMAT TEMPERATURE CONVERSION FORMULAS 16-Bit Temperature Data Format 13-Bit Temperature Data Format 10-Bit Temperature Data Format 9-Bit Temperature Data Format REGISTERS ADDRESS POINTER REGISTER TEMPERATURE VALUE REGISTERS STATUS REGISTER CONFIGURATION REGISTER THIGH SETPOINT REGISTERS TLOW SETPOINT REGISTERS TCRIT SETPOINT REGISTERS THYST SETPOINT REGISTER ID REGISTER SERIAL INTERFACE SERIAL BUS ADDRESS WRITING DATA READING DATA RESET GENERAL CALL INT AND CT OUTPUTS UNDERTEMPERATURE AND OVERTEMPERATURE DETECTION Comparator Mode Interrupt Mode APPLICATIONS INFORMATION THERMAL RESPONSE TIME SUPPLY DECOUPLING POWERING FROM A SWITCHING REGULATOR TEMPERATURE MEASUREMENT QUICK GUIDE TO MEASURING TEMPERATURE OUTLINE DIMENSIONS ORDERING GUIDE
Data Sheet ADT7420 I2C TIMING SPECIFICATIONS
TA = −40°C to +150°C, VDD = 2.7 V to 5.5 V, unless otherwise noted. All input signals are specified with rise time (tR) = fall time (tF) = 5 ns (10% to 90% of VDD) and timed from a voltage level of 1.6 V.
Table 2. Parameter Min Typ Max Unit Test Conditions/Comments
SERIAL INTERFACE 1 See Figure 2 6F6F SCL Frequency 0 400 kHz SCL High Pulse Width, tHIGH 0.6 μs SCL Low Pulse Width, tLOW 1.3 μs SCL, SDA Rise Time, tR 0.3 μs SCL, SDA Fall Time, tF 0.3 μs Hold Time (Start Condition), tHD:STA 0.6 μs After this period, the first clock is generated Setup Time (Start Condition), tSU:STA 0.6 μs Relevant for repeated start condition Data Setup Time, tSU:DAT 0.02 μs Setup Time (Stop Condition), tSU:STO 0.6 μs Data Hold Time, tHD:DAT (Master) 0.03 μs Bus-Free Time (Between Stop and Start Condition), tBUF 1.3 μs Capacitive Load for Each Bus Line, CB 400 pF 1 Sample tested during initial release to ensure compliance.
Timing Diagram t t R tF LOW tHD:STA SCL tHIGH t t t SU:STA SU:STO HD:STA tHD:DAT tSU:DAT SDA t
2
BUF
00
S
3-
P S P
01 09 Figure 2. Serial Interface Timing Diagram Rev. A | Page 5 of 24 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION PRODUCT HIGHLIGHTS FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS I2C TIMING SPECIFICATIONS Timing Diagram ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER DETAILS NORMAL MODE ONE-SHOT MODE CT and INT Operation in One-Shot Mode 1 SPS MODE SHUTDOWN FAULT QUEUE TEMPERATURE DATA FORMAT TEMPERATURE CONVERSION FORMULAS 16-Bit Temperature Data Format 13-Bit Temperature Data Format 10-Bit Temperature Data Format 9-Bit Temperature Data Format REGISTERS ADDRESS POINTER REGISTER TEMPERATURE VALUE REGISTERS STATUS REGISTER CONFIGURATION REGISTER THIGH SETPOINT REGISTERS TLOW SETPOINT REGISTERS TCRIT SETPOINT REGISTERS THYST SETPOINT REGISTER ID REGISTER SERIAL INTERFACE SERIAL BUS ADDRESS WRITING DATA READING DATA RESET GENERAL CALL INT AND CT OUTPUTS UNDERTEMPERATURE AND OVERTEMPERATURE DETECTION Comparator Mode Interrupt Mode APPLICATIONS INFORMATION THERMAL RESPONSE TIME SUPPLY DECOUPLING POWERING FROM A SWITCHING REGULATOR TEMPERATURE MEASUREMENT QUICK GUIDE TO MEASURING TEMPERATURE OUTLINE DIMENSIONS ORDERING GUIDE