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MCP98244 датащи(PDF) 27 Page - Microchip Technology

номер детали MCP98244
подробное описание детали  DDR4 DIMM Temperature Sensor with EEPROM for SPD
PDF  52 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP98244 датащи(HTML) 27 Page - Microchip Technology

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 2012-2013 Microchip Technology Inc.
DS22327C-page 27
MCP98244
5.1.7
RESOLUTION REGISTER
This register allows the user to change the sensor
resolution
(see
Section 5.2.4
“Temperature
Resolution”
). The POR default resolution is 0.25°C.
The selected resolution is also reflected in the
Capability register (see Register 5-2).
Note:
In order to prevent accidentally writing the
resolution register to higher resolution and
exceeding the maximum temperature
conversion time of tCONV = 125 ms, a
Shutdown Command (using the CONFIG
register) is required to change the
resolution register. The device must be in
shutdown mode to change the resolution.
REGISTER 5-8:
RESOLUTION REGISTER
‘0000 1001’b
R/W-1
U-0
U-0
U-0
U-0
U-0
U-0
U-0
—
bit 15
bit 8
U-0
U-0
U-0
U-0
U-0
U-0
R/W-0
R/W-1
Resolution
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15
Unimplemented:
Read as ‘1’
bit 14-2
Unimplemented:
Read as ‘0’
bit 1-0
Resolution:
00
= LSB = 0.5°C (tCONV = 23 ms typical)
01
= LSB = 0.25°C (power up default, tCONV = 46 ms typical)
10
= LSB = 0.125°C (tCONV = 75 ms typical)
11
= LSB = 0.0625°C (tCONV = 150 ms typical)



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