MAX6604AATA+T Maxim Integrated Products, MAX6604AATA+T Datasheet

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MAX6604AATA+T

Manufacturer Part Number
MAX6604AATA+T
Description
IC TEMP SENSOR DDR PREC 8-TDFN
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX6604AATA+T

Function
Temp Monitoring System (Sensor)
Sensor Type
Internal
Sensing Temperature
-20°C ~ 125°C
Output Type
I²C™/SMBus™
Output Alarm
Yes
Output Fan
No
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-20°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-TDFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Topology
-
The MAX6604 high-precision temperature sensor is
designed for thermal monitoring functions in DDR memo-
ry modules. The device is readable and programmable
through the 2-wire SMBus™/I
Three address inputs set the bus address for the temper-
ature sensor to provide up to eight devices on one bus.
The internal thermal sensor continuously monitors the
temperature and updates the temperature data eight
times per second. The master can read the tempera-
ture data at any time. Since the thermal sensor is locat-
ed on the memory module, temperature data recorded
accurately represents the temperature of the compo-
nents on the module. Consequently, the MAX6604 pro-
vides a much more accurate measurement of module
temperature than techniques involving temperature
sensors on the motherboard. In addition, the device
responds more quickly to temperature changes on the
module than a motherboard sensor.
The MAX6604 also features an interrupt-output indica-
tor for temperature-threshold monitoring. The threshold
levels are programmable through the digital interface.
The MAX6604 operates from -20°C to +125°C, and is
available in JEDEC-standard 8-pin TSSOP and 8-pin
TDFN (2mm x 3mm) packages.
19-3837; Rev 2; 10/10
SMBus is a trademark of Intel Corporation.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Memory Modules
Desktop Computers
Notebook Computers
Workstations
Networking Equipment
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________________________________________________________________ Maxim Integrated Products
General Description
+
V CC
A0
8
1
EVENT
MAX6604
2
A1
TDFN
7
2
C-compatible interface.
Precision Temperature Monitor for
SCL
A2
6
3
Applications
GND
SDA
EP
4
5
o JEDEC Compliant
o ±1°C Temperature-Monitoring Accuracy
o Overtemperature Interrupt with Programmable
o +2.7V to +3.6V Operating Voltage Range
o SMBus/I
o 300µA Typical Operating Current
o 3µA Typical Shutdown Current
o -20°C to +125°C Operating Temperature Range
o 8-Pin TSSOP and 8-Pin TDFN (2mm x 3mm)
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
Note: These devices operate over the -20°C to +125°C operat-
ing temperature range.
Typical Application Circuit appears at end of data sheet.
MAX6604ATA+
MAX6604AATA+
MAX6604AAHA+
Threshold
Packages
DDR Memory Modules
GND
A0
A1
A2
PART
1
2
4
3
2
C-Compatible Interface
+
FR EQU ENC Y
SERIA L-
CL OCK
( k Hz)
100
400
400
Ordering Information
MAX6604
TSSOP
Pin Configurations
PIN-PACKAGE
8 TDFN-EP*
8 TDFN-EP*
( M O 229- WC E D - 2)
8 TSSOP
8
7
6
5
Features
V CC
SCL
EVENT
SDA
SPEC IA L
M A RK
T O P
AAA
AAR
1

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MAX6604AATA+T Summary of contents

Page 1

... TDFN SMBus is a trademark of Intel Corporation. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. DDR Memory Modules o JEDEC Compliant o ±1°C Temperature-Monitoring Accuracy o Overtemperature Interrupt with Programmable Threshold o +2.7V to +3.6V Operating Voltage Range ...

Page 2

Precision Temperature Monitor for DDR Memory Modules ABSOLUTE MAXIMUM RATINGS All Input and Output Voltages ..................................-0.3V to +6V Continuous Power Dissipation ( +70°C) 8-Pin TDFN (derate 16.7mW/°C above +70°C) ......1333.3mW 8-Pin TSSOP (derate 8.1mW/°C above +70°C) ........646.7mW ESD ...

Page 3

Precision Temperature Monitor for TIMING CHARACTERISTICS—MAX6604ATA +2.7V to +3.6V -20°C to +125°C, unless otherwise noted. Typical values are PARAMETER Serial-Clock Frequency Bus Free Time Between STOP and START Condition Rep eat S ...

Page 4

Precision Temperature Monitor for DDR Memory Modules (Typical values are +3.3V +25°C SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE 3. 3. 3.0V CC ...

Page 5

Precision Temperature Monitor for Detailed Description The MAX6604 high-precision temperature sensor con- tinuously monitors temperature and updates the temperature data eight times per second. The device functions as a slave on the SMBus/I face. The master can read the temperature ...

Page 6

Precision Temperature Monitor for DDR Memory Modules Write Word Format S ADDRESS R/W 7 bits Slave Address: equivalent to chip-select line of a 3-wire interface Read Word Format S ADDRESS R/W ACK COMMAND 7 bits 8 bits Slave Address: equiva- ...

Page 7

Precision Temperature Monitor for EVENT-Output Functionality The EVENT output indicates conditions such as the temperature crossing a predefined boundary. It oper- ates in one of the three modes: interrupt mode, com- parator mode, and critical-temperature-only mode. Figure 3 shows an ...

Page 8

Precision Temperature Monitor for DDR Memory Modules the critical temperature register is likely to be higher than that of the alarm-upper-boundary register result, when the temperature is above the critical temperature likely that it is above ...

Page 9

Precision Temperature Monitor for Table 4. Configuration Register (Read/Write) Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 BIT DEFINITION (DESCRIPTIONS IN BOLD TYPE ARE THE DEFAULT VALUES) EVENT mode 0 = Comparator output mode (default) 0 ...

Page 10

Precision Temperature Monitor for DDR Memory Modules Table 4. Configuration Register (Read/Write) (continued) Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit 10 BIT DEFINITION (DESCRIPTIONS IN BOLD TYPE ARE THE DEFAULT VALUES) Shutdown mode 0 = Enable ...

Page 11

Precision Temperature Monitor for BELOW ALARM WINDOW BIT FUNCTION Temperature slope Sets Falling Clears Rising BELOW WINDOW BIT ABOVE WINDOW BIT Figure 4. Hysteresis Applied to Temperature Comparisons Alarm-Temperature Lower-Boundary Trip Register (Read/Write) [Address = 03h, ...

Page 12

Precision Temperature Monitor for DDR Memory Modules Critical Temperature Register (Read/Write) [Address = 04h, POR = 0000h] The data format for the critical temperature value is in two’s complement with one LSB = 0.25°C. Critical tem- Table 7. Critical Temperature ...

Page 13

Precision Temperature Monitor for Table 9. Manufacturer’s ID Register (Read Only) [Address = 06h, POR = 004Dh] Bit 15 Bit 14 Bit 13 Bit 12 Bit 11 Bit Table 10. Device ID and Revision ...

Page 14

Precision Temperature Monitor for DDR Memory Modules Chip Information PROCESS: BiCMOS 14 ______________________________________________________________________________________ Package Information For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS ...

Page 15

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 15 © 2010 Maxim Integrated Products ...

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