ADT7462ACPZ-REEL7 ON Semiconductor, ADT7462ACPZ-REEL7 Datasheet - Page 53

• Manufacturer Part Number: ADT7462ACPZ-REEL7
• Description: IC TEMP/VOLT MONITOR 32-LFCSP
• Manufacturer: ON Semiconductor

Specifications of ADT7462ACPZ-REEL7

• Function: Fan Control, Temp Monitor
• Topology: ADC, Comparator, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 125°C, External Sensor
• Output Type: SMBus™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-LFCSP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The following steps describe how to set up the ADT7462:
5. PWM3 is switched off by default (because this is a
6. No temperature or voltage (other than V
1. Powerup the device.
2. Choose the best−suited easy configuration option
dedicated pin). If no SMBus communication takes
place within 4.6 seconds of the V
switching on, this PWM drive is driven to full
speed. If SMBus communication does take place,
this pin behaves as programmed.
Diode 2, and V
complete bit (Bit 5) is set in Configuration
Register 1 (0x01). This allows the user to program
the ADT7462 as required before monitoring of all
channels is enabled, thereby not generating false
ALERTs. The setup complete bit should not be set
until the device is fully configured for the desired
monitoring functions.
for the application, changing pin functions as
required.
BATT
PIN 16
PIN 20
PIN 21
PIN 22
) is monitored until the setup
PIN 1
PIN 2
PIN 3
PIN 4
PIN 7
PIN 8
CCP
rail
CCP1
Figure 86. XOR Tree Test
http://onsemi.com
,
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XOR Tree Test
mode is useful for in−circuit test equipment at board−level
testing. By applying stimulus to the pins included in the
XOR test, it is possible to detect opens or shorts on the
system board. Figure 86 shows the signals exercised in the
XOR tree test. The XOR tree test is invoked by setting Bit 6
(XOR) of Configuration Register 3 (0x03).
multifunctional pins for the XOR tree test mode. Pin 13 is the
open−drain output of the XOR tree test.
PIN 25
PIN 26
PIN 27
PIN 28
PIN 29
PIN 31
PIN 32
The ADT7462 includes an XOR tree test mode. This
Note that the digital inputs must be selected on
3. Program all appropriate limits for monitored
4. Set the setup complete bit. Do not set this bit until
inputs. Program device parameters, fan control
parameters, mask bits, and anything else required
for the application.
the device is fully set up.
PIN 13