MCP98242T-CE/MC Microchip Technology, MCP98242T-CE/MC Datasheet - Page 13

• 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

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. Register 5-2 describes the
Capability register. These functions are described in
further detail in the following sections.
REGISTER 5-2:
© 2008 Microchip Technology Inc.
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 =
These bits reflect the selected resolution (see Section 5.2.3.2 “Temperature Resolution”)
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).
0.0625°C
A
= 0 (decimal) for temperature below 0°C
W = Writable bit
‘1’ = Bit is set
U-0
U-0
—
—
U-0
R-0
—
Resolution
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
U-0
R-1
—
Meas Range
UPPER
U-0
R-1
—
/T
LOWER
x = Bit is unknown
MCP98242
Accuracy
/T
CRIT
U-0
R-1
—
registers) and a
DS21996B-page 13
Temp Alarm
U-0
R-1
—
bit 8
bit 0