MAX6683AUB+T Maxim Integrated Products, MAX6683AUB+T Datasheet - Page 6

• Manufacturer Part Number: MAX6683AUB+T
• Description: IC TEMP SENSOR MON 10-UMAX
• Manufacturer: Maxim Integrated Products

Specifications of MAX6683AUB+T

• Function: Temp Monitoring System (Sensor)
• Topology: ADC, Multiplexer, Register Bank
• Sensor Type: Internal
• Sensing Temperature: -40°C ~ 125°C
• Output Type: I²C™/SMBus™
• Output Alarm: Yes
• Output Fan: No
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Full Temp Accuracy: +/- 3 C
• Digital Output - Bus Interface: Serial (2-Wire)
• Digital Output - Number Of Bits: 10 bit + Sign
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Unless the fault is removed, the ALERT output only
remains cleared until the end of the next conversion
cycle where it is again asserted. The ALERT output can
also be masked by writing to the appropriate bits in the
Interrupt Mask Register (Table 6) or by setting bit 1 of
the Configuration Register (Table 4) to zero.
The 2-wire serial interface accepts both I
dard SMBus Write Byte, Read Byte, Read Word, Send
Byte, and Receive Byte commands to program the
alarm thresholds and to read voltage and temperature
data. Voltage data is scaled so that when the nominal
voltage is present at an input (e.g., 1.8V for the 1.8V
input), the conversion result is equal to 3/4 of the ADC
full-scale range or a decimal count of 192 (Table 1).
Temperature Sensor and
System Monitor in a 10-Pin µMAX
Table 1. Register Map
6
_______________________________________________________________________________________
ADDRESS
2Bh
2Ch
2Dh
3Ah
4Bh
20h
21h
22h
23h
27h
2Eh
2Fh
30h
31h
32h
39h
40h
41h
43h
48h
READ/WRITE
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
POWER-ON DEFAULT
1101 0011 (1.1
1010 1101 (0.9
1101 0011 (1.1
1010 1101 (0.9
1101 0011 (1.1
1010 1101 (0.9
1101 0011 (1.1
1010 1101 (0.9
0101 0000 (+80°C)
0100 0001 (+65°C)
2
C and stan-
0010 1XXY
0000 1000
0000 0000
0000 0000
0000 0000
—
—
—
—
—
IN
2.5V)
2.5V)
1.8V)
1.8V)
3.3V)
3.3V)
5V)
5V)
When using the Read Byte command, the temperature
data format is 7 bits plus sign with the LSB equal to
1°C, in two's complement format. When using the Read
Word command, the temperature data format is 10 bits
plus sign, with the LSB equal to 0.125°C, in two’s com-
plement format. See Table 2 for the temperature data
format.
The MAX6683 has only one address input, ADD.
Connect ADD to GND, V
of four different address codes. Whenever an
SMBus/I
Slave Address Register are determined by connection,
setting the chip address to one of four possible values.
In addition, an address code can also be directly writ-
Device Address Register. The values of XX are
dependent on the status of the ADD pin.
Power-On Default ADD Connection
0010 100Y
0010 101Y
0010 110Y
0010 111Y
Y (bit 0) is the SMBus read/write bit. When the 7-bit chip
address is read back from the Serial Address Register,
an 8-bit word is presented with a zero in bit 0 (Y).
Data register for 2.5 V
Data register for 1.8V
Data register for 5V
Data register for V
Data register for temperature measurement
High limit for 2.5V
Low limit for 2.5V
High limit for 1.8V
Low limit for 1.8V
High limit for 5V
Low limit for 5V
High limit for V
Low limit for V
Hot temperature limit
Hot temperature hysteresis
Configuration Register
Interrupt Status Register
Interrupt Mask Register
Temperature Configuration Register
2
C transaction is initiated, the 2LSBs of the
CC
CC
IN
IN
IN
IN
IN
IN
CC
IN
To GND
To V
To SDA
To SCL
DESCRIPTION
IN
measurement
IN
measurement
CC
measurement
measurement
CC
, SDA, or SCL to select one