SE97TP,147 NXP Semiconductors, SE97TP,147 Datasheet - Page 7

• Manufacturer Part Number: SE97TP,147
• Description: IC TEMP SENSOR DIMM 8-HWSON
• Manufacturer: NXP Semiconductors

Specifications of SE97TP,147

• 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-WSON (Exposed Pad), 8-HWSON
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-4730-2; 935286725147

NXP Semiconductors
7. Functional description
SE97_7
Product data sheet
Fig 7.
MSB
0
a. Temperature sensor
0
fixed
Slave address
slave address
1
1
7.1 Serial bus interface
7.2 Slave address
A2
selectable
hardware
The SE97 communicates with a host controller by means of the 2-wire serial bus
(I
device supports SMBus, I
speed is defined to have bus speeds from 0 Hz to 100 kHz, I
to 400 kHz, and the SMBus is from 10 kHz to 100 kHz. The host or bus master generates
the SCL signal, and the SE97 uses the SCL signal to receive or send data on the SDA
line. Data transfer is serial, bidirectional, and is one byte at a time with the Most Significant
Bit (MSB) is transferred first. Since SCL and SDA are open-drain, pull-up resistors must
be installed on these pins.
The SE97 uses a 4-bit fixed and 3-bit programmable (A0, A1 and A2) 7-bit slave address
that allows a total of eight devices to coexist on the same bus. The A0, A1 and A2 pins are
pulled LOW internally. The A0 pin is also overvoltage tolerant supporting 10 V software
write protect. When it is driven higher than 7.8 V, writing a special command would put the
EEPROM in reversible write protect mode (see
pin is sampled at the start of each I
address is ‘0011b’. The EEPROM’s fixed address for the normal EEPROM read/write is
‘1010b’, and for EEPROM software protection command is ‘0110b’. Refer to
A1
2
C-bus/SMBus) that consists of a serial clock (SCL) and serial data (SDA) signals. The
LSB
002aab304
A0
R/W
X
MSB
1
b. EEPROM (normal read/write)
Rev. 07 — 29 January 2010
0
DDR memory module temp sensor with integrated SPD, 3.3 V
fixed
2
C-bus Standard-mode and Fast-mode. The I
slave address
1
0
2
A2
selectable
C-bus/SMBus access. The temperature sensor’s fixed
hardware
A1
LSB
002aab351
A0
R/W
X
Section 7.10.2 “Memory
MSB
0
c. EEPROM (software
2
1
C-bus fast speed from 0 Hz
fixed
protection command)
slave address
1
0
© NXP B.V. 2010. All rights reserved.
2
protection”). Each
A2
C-bus standard
selectable
hardware
A1
Figure
SE97
LSB
002aab352
A0
R/W
7.
X
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