MT16JSF25664H Micron Semiconductor Products, MT16JSF25664H Datasheet - Page 17

• Manufacturer Part Number: MT16JSF25664H
• Description: Ddr3 Sdram Sodimm
• Manufacturer: Micron Semiconductor Products

Temperature Format
Temperature Trip Point Registers
Table 20:
Table 21:
Critical Temperature Register
Table 22:
PDF: 09005aef83364b70/Source: 09005aef83364bd3
JSF16C256x64HZ.fm - Rev. A 5/08 EN
15
15
15
0
0
0
14
14
14
0
0
0
Alarm Temperature Lower Boundary Register (Address: 0x02)
Alarm Temperature Lower Boundary Register (Address: 0x03)
Critical Temperature Register (Address: 0x04)
13
13
13
0
0
0
MSB
MSB
MSB
12
12
12
The temperature trip point registers and temperature readout register use a
“2’s complement” format to enable negative numbers. The least significant bit (LSB) is
equal to 0.0625°C or 0.25°C depending on which register is referenced. As an example,
assuming an LSB of 0.0625°C:
• A value of 0x018C would equal 24.75°C
• A value of 0x06C0 would equal 108°C
• A value of 0x1E74 would equal –24.75°C
The upper and lower temperature boundary registers are used to set the maximum and
minimum values of the alarm window. LSB for these registers is 0.25°C. All RFU bits in
the register will always report zero.
The critical temperature register is used to set the maximum temperature above the
alarm window. The LSB for this register is 0.25°C. All RFU bits in the register will always
report zero.
11
11
11
2GB (x64, DR) 204-Pin Halogen-Free DDR3 SDRAM SODIMM
10
10
10
Alarm window upper boundary temperature
Temperature Sensor with Serial Presence-Detect EEPROM
Alarm window lower boundary temperature
9
9
9
Critical temperature trip point
8
8
8
Bit
Bit
Bit
17
7
7
7
Micron Technology, Inc., reserves the right to change products or specifications without notice.
6
6
6
5
5
5
4
4
4
3
3
3
©2008 Micron Technology, Inc. All rights reserved
LSB
LSB
LSB
2
2
2
RFU
RFU
RFU
1
1
1
RFU
RFU
RFU
0
0
0