SE98ATP,547 NXP Semiconductors, SE98ATP,547 Datasheet - Page 23

• Manufacturer Part Number: SE98ATP,547
• Description: IC TEMP SENSOR DDR 8-HWSON
• Manufacturer: NXP Semiconductors

Specifications of SE98ATP,547

• Function: Temp Monitoring System (Sensor)
• Topology: ADC (Sigma Delta), Register Bank
• Sensor Type: Internal
• Sensing Temperature: -40°C ~ 125°C
• Output Type: I²C™/SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 1.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-WSON (Exposed Pad), 8-HWSON
• Temperature Threshold: Programmable
• Full Temp Accuracy: +/- 1 C
• Digital Output - Bus Interface: 2-Wire, SMBus, I2C
• Digital Output - Number Of Bits: 11
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 1.7 V
• Description/function: DDR 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: 568-4731-2; SE98ATP,147

NXP Semiconductors
SE98A_4
Product data sheet
8.5.2 Lower Boundary Alarm Trip register (16-bit read/write)
8.5.3 Critical Alarm Trip register (16-bit read/write)
The value is the lower threshold temperature value for Alarm mode. The data format is
2’s complement with bit 2 = 0.25 °C. RFU bits will always report zero. Interrupts will
respond to the presently programmed boundary values. If boundary values are being
altered in-system, it is advised to turn off interrupts until a known state can be obtained to
avoid superfluous interrupt activity.
Table 14.
Table 15.
The value is the critical temperature. The data format is 2’s complement with
bit 2 = 0.25 °C. RFU bits will always report zero.
Table 16.
Table 17.
Bit
Symbol
Reset
Access
Bit
15:13
12
11:2
1:0
Bit
Symbol
Reset
Access
Bit
15:13
12
11:2
1:0
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
Symbol
RFU
SIGN
LBT
RFU
Symbol
RFU
SIGN
CT
RFU
Lower Boundary Alarm Trip register bit allocation
Lower Boundary Alarm Trip register bit description
Lower Boundary Alarm Trip register bit allocation
Critical Alarm Trip register bit description
R/W
R/W
15
15
R
R
0
0
7
0
7
0
Rev. 04 — 25 November 2009
RFU
RFU
R/W
R/W
14
14
R
R
0
0
6
0
6
0
Description
reserved; always 0
Sign (MSB)
Lower Boundary Alarm Trip Temperature (LSB = 0.25 °C)
reserved; always 0
Description
reserved; always 0
Sign (MSB)
Critical Alarm Trip Temperature (LSB = 0.25 °C)
reserved; always 0
R/W
R/W
13
13
R
R
0
0
5
0
5
0
LBT[5:0]
CT[5:0]
DDR memory module temp sensor, 1.7 V to 3.6 V
SIGN
SIGN
R/W
R/W
R/W
R/W
12
12
0
0
4
0
4
0
R/W
R/W
R/W
R/W
11
11
0
0
3
0
3
0
R/W
R/W
R/W
R/W
10
10
0
0
2
0
2
0
LBT[9:6]
CT[9:6]
© NXP B.V. 2009. All rights reserved.
R/W
R/W
9
0
9
0
R
R
1
0
1
0
SE98A
RFU
RFU
R/W
R/W
23 of 43
8
0
8
0
R
R
0
0
0
0