ADM1023ARQZ-REEL ON Semiconductor, ADM1023ARQZ-REEL Datasheet - Page 10

• Manufacturer Part Number: ADM1023ARQZ-REEL
• Description: IC SENSOR TEMP DUAL PREC 16QSOP
• Manufacturer: ON Semiconductor

Specifications of ADM1023ARQZ-REEL

• Function: Temp Monitoring System (Sensor)
• Topology: ADC, Comparator, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: 0°C ~ 120°C, External Sensor
• Output Type: SMBus™
• Output Alarm: Yes
• Output Fan: No
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: 0°C ~ 120°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Temperature Sensor Function: Temp Sensor
• Interface Type: Serial (2-Wire)
• Operating Temperature (min): 0C
• Operating Temperature (max): 120C
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Full Temp Accuracy: +/- 1 C, +/- 3 C
• Digital Output - Bus Interface: Serial (2-Wire)
• Maximum Operating Temperature: + 120 C
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

1. Writing to Address 0F causes the ADM1023 to perform a single measurement. It is not a data register as such; thus, it does not matter what
Status Register
ADC is busy converting when it is high. Bit 6 to Bit 3 are
flags indicating the results of the limit comparisons.
above the corresponding high temperature limit or below the
corresponding low temperature limit, one or more of these
flags will be set. Bit 2 is a flag that is set if the remote
temperature sensor is open−circuit. These five flags are
NOR’d together, so that if any of them are high, the ALERT
interrupt latch is set, and the ALERT output goes low.
Table 3. List of ADM1023 Registers
Table 4. Offset Values
Read Address (Hex)
Bit 7 of the status register (see Table 5) indicates that the
If the local and/or remote temperature measurement is
data is written to it.
Not applicable
Not applicable
0000 0000
0000 0000
0000 0001
0000 0100
1111 1100
1111 1111
1111 1111
0x11
FE
FF
00
01
02
03
04
05
06
07
08
10
11
12
13
14
19
20
Offset Registers
Write Address (Hex)
Not applicable
Not applicable
Not applicable
Not applicable
Not applicable
Not applicable
Not applicable
Not applicable
0000 0000
0000 0000
0000 0000
0010 0000
0000 0000
0000 0000
1110 0000
0F (Note 1)
0x12
0A
0B
0C
0D
0E
09
11
12
13
14
21
Address pointer
Local temperature value
Remote temperature value high byte
Status
Configuration
Conversion rate
Local temperature high limit
Local temperature low limit
Remote temperature high limit high byte
Remote temperature low limit high byte
One−shot
Remote temperature value low byte
Remote temperature offset high byte
Remote temperature offset low byte
Remote temperature high limit low byte
Remote temperature low limit low byte
Reserved
Reserved
Manufacturer device ID
Die revision code
Offset Value
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−0.125°C
+0.125°C
−4°C
−1°C
+1°C
+4°C
0°C
ADM1023
10
provided the error conditions that caused the flags to be set
have gone away. While a limit comparator is tripped due to
a value register containing an out−of−limit measurement or
the sensor is open−circuit, the corresponding flag bit cannot
be reset. A flag bit can be reset only if the corresponding
value register contains an in−limit measurement, or the
sensor is good.
status register, but it resets when the ALERT output has been
serviced by the master reading the device address, provided
the error condition has gone away and the status register flag
bits have been reset.
Reading the status register clears the five flag bits,
The ALERT interrupt latch is not reset by reading the
Name
With Offset
17.875°C
18.125°C
14°C
17°C
18°C
19°C
22°C
Remote Temperature
Undefined
1000 0000 (0x80) (−128°C)
1000 0000 (0x80) (−128°C)
Undefined
0000 0000 (0x00)
0000 0010 (0x02)
0111 1111 (0x7F) (+127°C)
1100 1001 (0xC9) (−55°C)
0111 1111 (0x7F) (+127°C)
1100 1001 (0xC9) (−55°C)
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
Undefined
0100 0001 (0x41)
0011 xxxx (0x3x)
Power−On Default
Without Offset
18°C
18°C
18°C
18°C
18°C
18°C
18°C