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ADT7470ARQZ-REEL7 Arkusz danych(PDF) 7 Page - Analog Devices |
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ADT7470ARQZ-REEL7 Arkusz danych(HTML) 7 Page - Analog Devices |
7 / 41 page ADT7470 Data Sheet Rev. E | Page 6 of 40 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 GND VCC TACH3 TACH2 TACH1 PWM2 SCL PWM1 SMBALERT FULL_SPEED/TMP_START PWM4 PWM3 TACH4 ADDR TMP_IN SDA ADT7470 TOP VIEW (Not to Scale) Figure 3. Pin Configuration Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 SCL Digital Input (Open Drain). SMBus serial clock input. Requires SMBus pull-up, typically 2k2Ω. 2 GND Ground Pin. 3 VCC Power Supply Pin. 4 TACH3 Digital Input (Open Drain). Fan tachometer input to measure the speed of Fan 3. 5 PWM2 Digital I/O (Open Drain). Requires 10 kΩ typical pull-up. Pulse-width modulated output to control the speed of Fan 2. Can be configured as GPIO by setting Bit 0x7F[2] = 1. 6 TACH1 Digital Input (Open Drain). Fan tachometer input to measure the speed of Fan 1. 7 TACH2 Digital Input (Open Drain). Fan tachometer input to measure the speed of Fan 2. 8 PWM3 Digital I/O (Open Drain). Pulse-width modulated output to control the speed of Fan 3. Requires 10 kΩ typical pull-up. Can be configured as GPIO by setting Bit 0x7F[1] = 1. 9 TACH4 Digital Input (Open Drain). Fan tachometer input to measure the speed of Fan 4. 10 PWM4 Digital I/O (Open Drain). Pulse-width modulated output to control the speed of Fan 4. Requires 10 kΩ typical pull-up. Can be configured as GPIO by setting Bit 0x7F[0] = 1. 11 ADDR Three-state Input. Used to set the SMBus device address. 12 TMP_IN Digital Input (Open Drain). PWM input to PWM processing engine that interprets daisy-chained output from multiple TMP05 temperature sensors. Readings from individual TMP05 temperature sensors are available by reading the temperature reading registers over the SMBus. 13 FULL_SPEED Digital Input Active Low (Open Drain). This input blasts the fans to maximum speed when the pin is pulled low externally. Do not leave pin 13 open when not I use, tie to VCC. 13 TMP_START Digital Output (Open Drain). This pin can be used as an output to start daisy-chained temperature measurements from TMP05 or TMP06 temperature sensors. Requires 10 kΩ typical pull-up. 14 SMBALERT Digital Output Active Low (Open Drain). This pin can be reconfigured as an SMBALERT interrupt output to signal out-of-limit conditions such as fan failures. 15 PWM1 Digital I/O (Open Drain). Pulse-width modulated output to control the speed of Fan 1. Requires 10 kΩ typical pull-up. Can be configured as GPIO by setting Bit 0x7F[3] = 1. 16 SDA Digital I/O (Open Drain). SMBus bidirectional serial data. Requires SMBus pull-up, typically 2k2Ω. |
Podobny numer części - ADT7470ARQZ-REEL7 |
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Podobny opis - ADT7470ARQZ-REEL7 |
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