mt9hvf6472rhy-667 Micron Semiconductor Products, mt9hvf6472rhy-667 Datasheet - Page 17

• Manufacturer Part Number: mt9hvf6472rhy-667
• Description: 512mb, 1gb X72, Ecc, Sr 200-pin Ddr2 Sdram Vlp Sordimm
• Manufacturer: Micron Semiconductor Products

Temperature Format
Upper Temperature Boundary Register
Table 24:
Lower Temperature Boundary Register
Table 25:
Critical Temperature Register
Table 26:
PDF: 09005aef82882ca3/Source: 09005aef82882c52
HVF9C64_128x72RH.fm - Rev. B 5/08 EN
15
15
15
0
0
0
14
14
14
0
0
0
Upper Temperature Boundary Register Bits
Lower Temperature Boundary Register Bits
Critical Temperature Register Bits
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. For 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 temperature boundary register is used to set the maximum value of the alarm
window. The LSB for this register is 0.25°C. All RFU bits in the register will always report
zero.
The lower temperature boundary register is used to set the minimum value of the alarm
window. The LSB for this register is 0.25
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
512MB, 1GB (x72, ECC, SR) 200-Pin DDR2 SDRAM VLP SORDIMM
10
10
10
Alarm window upper boundary temperature
Alarm window lower boundary temperature
9
9
9
Critical temperature trip point
8
8
8
17
7
7
7
Micron Technology, Inc., reserves the right to change products or specifications without notice.
o
C. All RFU bits in the register will always report
6
6
6
5
5
5
4
4
4
Temperature Sensor
©2007 Micron Technology, Inc. All rights reserved.
3
3
3
LSB
LSB
LSB
2
2
2
RFU
RFU
RFU
1
1
1
RFU
RFU
RFU
0
0
0