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

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MCP98242T-CE/MC

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

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MCP98242T-CE/MC
Manufacturer:
MICROCHIP
Quantity:
12 000
The MCP98242 family devices that you have received
conform functionally to the current Device Data Sheet
(DS21996B), except for the anomalies described in this
document.
Devices on or after date code 0847 correct this issue.
Data Sheet Clarifications
The following typographic corrections and clarifications
are to be noted for the latest version of the device data
sheet (DS21996B):
1. Module: Sensor Temperature Register
The MCP98242 device has internal intermittent timing
issue.
Under the specific boundary conditions listed below,
the 2 byte temperature register T
temperature data +16°C or -16°C from the nominal
temperature due to internal data synchronization issue.
Conditions:
a)
b)
Under these two conditions, the temperature reading
may jump up or down by 16°C.
© 2009 Microchip Technology Inc.
Note:
- from ‘1111 1100’b to ‘0000 0000’b
- from ‘0000 0000’b to ‘1111 1100’b
If the Lower Byte of the T
down:
If the internal ADC conversion completes
(T
transmission via the I
CONV
Corrections are shown in bold. Where
possible, the original bold text formatting
has been removed for clarity.
= 65 ms) while the Upper Byte is in
Update
MCP98242 Rev. A1 Silicon Errata
2
C bus.
A
register rolls up or
A
may contain
For example, if the previous temperature conversion is
31.75°C (byte 1 = ‘0000 0001’b and byte 2 = ‘1111
1100’b) and if the next temperature conversion from
the internal ADC is complete after T
(byte 1 = ‘0000
0000’b) while byte 1 ‘0000 0001’b from previous
conversion is in transmission via I
controller, then byte 2 can be over written by the sec-
ond byte of the latest conversion data of ‘0000
0000’b. In this case, the host controller would read
16°C (byte 1 = ‘0000 0001’b and byte 2 = ‘0000
0000’b). Also, if the above conditions are met with the
previous temperature conversion at 32.00°C and the
next temperature conversion is 31.75°C, the host
controller would read 48.75°C.
Byte 1 must be in I
occur and the ADC must complete conversion while
I
temperature must be at multiples of 16°C±0.25°C for
the temperature register to be partially overwritten.
2
C is in communication. In addition, the ambient
MCP98242
2
0010’b and byte 2 = ‘0000
C transmission for this issue to
CONV
DS80431C-page 1
2
C to the host
with 32.00°C

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MCP98242T-CE/MC Summary of contents

Page 1

... I C bus. Under these two conditions, the temperature reading may jump up or down by 16°C. © 2009 Microchip Technology Inc. MCP98242 For example, if the previous temperature conversion is 31.75°C (byte 1 = ‘0000 0001’b and byte 2 = ‘1111 1100’b) and if the next temperature conversion from the internal ADC is complete after T (byte 1 = ‘ ...

Page 2

... Continuous Temperature Conversion Begin I2C communication Byte Transmission Is Temperature No 31.75°C? Note 2 Yes No #Event Output Yes Logic Is Note 1 No Temperature 32.00°C? Note 2 Yes End TA Upper Byte Transmission Read TA Lower Byte #Event Pin 2 C module shift © 2009 Microchip Technology Inc. ...

Page 3

... Devices on or after date code 0915 have an updated Device ID/Revision of 0x2001 hex. These devices have been validated by Microchip Technology Inc. and Intel Corporation. • MCP98242T-BE/MNYBA2 • MCP98242T-BE/MNYBAC • MCP98242T-BE/MCBA2 • MCP98242T-BE/MCBAC • MCP98242-BE/MCBA2 CONV MCP98242 Error °C Binary 0 0000 0000 0000 0000 31 ...

Page 4

... Rev C Document (5/2009) • Updated Section “Part Numbers that fix this issue” with date code for devices with Device/ Rev ID register of 0x2001. This document replaces this errata document: • DS80431B, “MCP98242 Rev. A1 Silicon Errata” DS80431C-page 4 © 2009 Microchip Technology Inc. ...

Page 5

... PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 6

... Fax: 886-3-6578-370 Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 © 2009 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...

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