SE97PW,118 NXP Semiconductors, SE97PW,118 Datasheet - Page 35

• Manufacturer Part Number: SE97PW,118
• Description: IC TEMP SENSOR DIMM 8-TSSOP
• Manufacturer: NXP Semiconductors

Specifications of SE97PW,118

• Function: Temp Monitoring System (Sensor)
• Topology: ADC (Sigma Delta), Comparator, Register Bank
• Sensor Type: Internal
• Sensing Temperature: -40°C ~ 125°C
• Output Type: I²C™/SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP
• Temperature Threshold: + 165 C
• Full Temp Accuracy: 1 %
• Digital Output - Bus Interface: I2C, SMBus
• Digital Output - Number Of Bits: 11 bit
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 3 V
• Description/function: Memory Module Temperature Sensor
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Supply Current: 250 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-4291-2; 935284062118; SE97PW-T

NXP Semiconductors
9. Application design-in information
SE97_7
Product data sheet
Fig 24. SE97 interfacing with 1.1 V host controller
0.1 μF
A2
A0
A1
In a typical application, the SE97 behaves as a slave device and interfaces to a bus
master (or host) via the SCL and SDA lines. The EVENT output is monitored by the host,
and asserts when the temperature reading exceeds the programmed values in the alarm
registers. The A0, A1 and A2 pins are directly connected to V
resistors. The SDA and SCL serial interface pins are open-drain I/Os that require pull-up
resistors, and are able to sink a maximum of 3 mA with a voltage drop less than 0.4 V.
Typical pull-up values for SCL and SDA are 10 kΩ, but the resistor values can be changed
in order to meet the rise time requirement if the capacitance load is too large due to
routing, connectors, or multiple components sharing the same bus.
Fig 23. Typical application showing SE97 interfacing with 3.3 V host
SE97
V
V
DD
SS
EVENT
3.3 V
SCL
SDA
10 kΩ
10 kΩ
Rev. 07 — 29 January 2010
slave
A2
A0
A1
DDR memory module temp sensor with integrated SPD, 3.3 V
mother board
SE97
V
V
DD
SS
0.1 μF
B2
B1
V
CC(B)
PCA9509
3.3 V
V
CC(A)
EVENT
EN
A2
A1
SDA
SCL
10 kΩ
(3×)
10 kΩ
10 kΩ
master
EVENT
CONTROLLER
DD
SCL
SDA
or V
HOST
0.1 μF
CONTROLLER
002aab354
SS
1.1 V
HOST
without any pull-up
© NXP B.V. 2010. All rights reserved.
002aad262
SE97
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