MAX6683AUB+ Maxim Integrated Products, MAX6683AUB+ Datasheet

IC TEMP SENSOR MON 10-UMAX

MAX6683AUB+

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

Specifications of MAX6683AUB+

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
The MAX6683 system supervisor monitors multiple
power-supply voltages, including its own, and also fea-
tures an on-board temperature sensor. The MAX6683
converts voltages to an 8-bit code and temperatures to
an 11-bit (10-bit-plus-sign) code using an analog-to-
digital converter (ADC). A multiplexer automatically
sequences through the voltage and temperature mea-
surements. The digitized signals are then stored in reg-
isters and compared to the over/underthreshold limits
programmed over the SMBus™/I
wire serial interface.
When a temperature measurement exceeds the pro-
grammed threshold, or when an input voltage falls out-
side the programmed voltage limits, the MAX6683
generates a latched interrupt output ALERT. Three
interrupt modes are available for temperature excur-
sions. These are default mode, one-time interrupt
mode, and comparator mode. The ALERT output is
cleared, except for temperature interrupts generated in
comparator mode, by reading the Interrupt Status reg-
ister (Table 5). 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 MAX6683 SMBus/I
compatible interface also responds to the SMB alert
response address.
19-2226; Rev 1; 7/04
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
TO 2.5V
TO 5V
TO 1.8V
Workstations
Servers
Networking
Telecommunications
1.8V
2.5V
5V
N.C.
GND
CPU
1.8V
IN
IN
IN
Typical Application Circuit
ALERT
________________________________________________________________ Maxim Integrated Products
ADD
SDA
V
SCL
CC
General Description
0.1 F
2
Applications
System Monitor in a 10-Pin µMAX
C™-compatible 2-
10k
CONTROLLER
V
I
CC
2
C/SMBus
= +3.3V
2
C-
Temperature Sensor and
♦ Monitors Local Temperature
♦ Monitors Three External Voltages (1.8V, 2.5V, 5V
♦ Monitors V
♦ User-Programmable Voltage and Temperature
♦ Alert Function with Ability to Respond to SMB
♦ +2.7V to +5.5V Supply Range
♦ -40°C to +125°C Temperature Range
♦ 60Hz or 50Hz Line-Frequency Rejection
♦ Tiny 10-Pin µMAX Package
♦ MAX6683EVKIT Available
SMBus is a trademark of Intel Corp.
I
2
MAX6683AUB
C is a trademark of Philips Corp.
Nominal)
Thresholds
Alert Response Address
TOP VIEW
PART
1.8V
2.5V
CC
GND
5V
N.C.
IN
IN
IN
(3.3V Nominal)
1
2
3
4
5
-40°C to +125°C
TEMP RANGE
Ordering Information
MAX6683
Pin Configuration
10
9
8
7
6
V
SCL
SDA
ADD
ALERT
CC
10 µMAX
PIN-PACKAGE
Features
1

Related parts for MAX6683AUB+

MAX6683AUB+ Summary of contents

Page 1

... ADD N.C. ALERT GND ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Temperature Sensor and System Monitor in a 10-Pin µMAX ♦ Monitors Local Temperature ♦ Monitors Three External Voltages (1.8V, 2.5V, 5V Nominal) ♦ ...

Page 2

Temperature Sensor and System Monitor in a 10-Pin µMAX ABSOLUTE MAXIMUM RATINGS All Voltages Referenced to GND All Pins...................................................................-0.3V to +6.0V SDA, ALERT Current ...........................................-1mA to +50mA Continuous Power Dissipation (T = +70°C) A 10-Pin µMAX (derate 5.6mW/°C above +70°C) ...

Page 3

ELECTRICAL CHARACTERISTICS (continued -40°C to +125°C, unless otherwise noted. Typical values are PARAMETER SYMBOL TIMING (Figures 3 and 4) Serial Clock Frequency Bus Free Time Between Stop T and Start Start Condition Hold Time t ...

Page 4

Temperature Sensor and System Monitor in a 10-Pin µMAX (V = +3.3V, ADD = GND +25°C, unless otherwise noted SUPPLY CURRENT vs. SUPPLY VOLTAGE 350 INTERFACE INACTIVE 300 A 250 B C 200 D E 150 ...

Page 5

PIN NAME 1 1.8V Analog Input. Monitors 1.8V nominal supply 2.5V Analog Input. Monitors 2.5V nominal supply Analog Input. Monitors 5V nominal supply N.C. No Connect. Not internally connected. Connect to GND to ...

Page 6

Temperature Sensor and System Monitor in a 10-Pin µMAX Table 1. Register Map ADDRESS READ/WRITE 20h R 21h R 22h R 23h R 27h R 2Bh R/W 2Ch R/W 2Dh R/W 2Eh R/W 2Fh R/W 30h R/W 31h R/W 32h ...

Page 7

Table 2. Temperature Data Format (Two's Complement) HIGH BYTE TEMPERATURE DIGITAL OUTPUT (°C) (BINARY) +125 0111 1101 +25 0001 1001 +1 0000 0001 0 0000 0000 -1 1111 1111 -25 1110 0111 -40 1101 1000 LOW BYTE 0.875 1110 0000 ...

Page 8

Temperature Sensor and System Monitor in a 10-Pin µMAX Table 4. Configuration Register (Address 40h, Power-On Default = 08h) BIT NAME READ/WRITE 0 Start/Stop ALERT Enable 1 2 Reserved ALERT Clear 3 Line Frequency 4 Select 5 Short Cycle 6 ...

Page 9

Table 6. Interrupt Mask Register (Address 43h, Power-Up Default = 00h) BIT NAME READ/WRITE 0 2. 3.3V 4 Temp Reserved Table 7. Temperature Configuration Register (Address 4Bh, Power-Up Default = 00h) BIT ...

Page 10

Temperature Sensor and System Monitor in a 10-Pin µMAX TEMPERATURE MONITORING CYCLE INTERRUPT STATUS READ Figure 1. Alert Response to Temperature Interrupts Write Byte Format S ADDRESS W/R 7 bits 0 Slave Address: equiva- lent to chip-select line of a ...

Page 11

LOW HIGH SMBCLK SMBDATA t t SU:STA HD:STA A = START CONDITION B = MSB OF ADDRESS CLOCKED INTO SLAVE C = LSB OF ADDRESS CLOCKED INTO SLAVE D = R/W BIT CLOCKED INTO SLAVE E ...

Page 12

Temperature Sensor and System Monitor in a 10-Pin µMAX UPPER BYTE D10 11-BIT READ FORMAT UPPER BYTE 9-BIT READ FORMAT Figure 5. Read Temperature Format Alert Response Address The SMBus alert response interrupt ...

Page 13

Functional Diagram V CC 1.8V INPUT VOLTAGE IN ADC SCALING AND 2.5V IN MULTIPLEXER 5.0V IN TEMPERATURE VOLTAGE SENSOR REFERENCE forming a Read Word operation, the MAX6683 writes the 11 bits of data to the bus in two 8-bit words. ...

Page 14

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2004 Maxim Integrated Products ...

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