MCP98242T-CE/MC Microchip Technology, MCP98242T-CE/MC Datasheet - Page 16

• Manufacturer Part Number: MCP98242T-CE/MC
• Description: JEDEC DIMM Serial Output Temp Sensor + SPD EEPROM 8 DFN 2X3mm T/R
• Manufacturer: Microchip Technology

Specifications of MCP98242T-CE/MC

• 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: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-DFN
• Full Temp Accuracy: +/- 2 C
• Digital Output - Bus Interface: Serial (2-Wire, I2C)
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MCP98242T-CE/MCTR

MCP98242
5.1.1
This is a read-only register used to identify the
temperature sensor capability. In this case, the
MCP98242 is capable of providing temperature at
0.25°C resolution, measuring temperature below and
above 0°C, providing ±1°C and ±2°C accuracy over the
active and monitor temperature ranges (respectively)
and providing user-programmable temperature event
boundary trip limits.
Capability register. These functions are described in
further detail in the following sections.
REGISTER 5-2:
DS21996D-page 16
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15-5
bit 4-3
bit 2
bit 1
bit 0
U-0
U-0
—
—
CAPABILITY REGISTER
Unimplemented: Read as ‘0’
Resolution:
00 = 0.5°C
01 = 0.25°C (power-up default)
10 = 0.125°C
11 = 0.0625°C
These bits reflect the selected resolution (see
Temperature Measurement Range (Meas. Range):
0 =
1 =
Accuracy:
0 =
1 =
Temperature Alarm:
0 =
1 =
U-0
U-0
—
—
CAPABILITY REGISTER (READ-ONLY)  ADDRESS ‘0000 0000’b
T
The part can measure temperature below 0°C (power-up default)
Accuracy ±2°C from +75°C to +95°C (Active Range) and ±3°C from +40°C to +125°C
(Monitor Range)
Accuracy ±1°C from +75°C to +95°C (Active Range) and ±2°C from +40°C to +125°C
(Monitor Range)
No defined function (This bit will never be cleared or set to ‘0’).
The part has temperature boundary trip limits (T
temperautre event output (JC 42.4 required feature).
A
Register 5-2
0 (decimal) for temperature below 0°C
W = Writable bit
‘1’ = Bit is set
U-0
U-0
—
—
describes the
U-0
R-0
—
Resolution
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
Section 5.2.3.3 “Temperature
U-0
R-1
—
Meas Range
UPPER
U-0
R-1
—
/T
LOWER
 2010 Microchip Technology Inc.
x = Bit is unknown
Accuracy
/T
CRIT
U-0
R-1
Resolution”)
—
registers) and a
Temp Alarm
U-0
R-1
—
bit 8
bit 0