MCP98242T-CE/MC Microchip Technology, MCP98242T-CE/MC Datasheet - Page 34

• 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
5.3.3.3
Once the PWP register is written, the lower half of the
memory will be permanent protected and the device
will not acknowledge any command. The protected
area of the memory can not be cleared, reversed, or
re-written. If a write is attempted to the protected area,
the device will acknowledge the address byte and word
address but not the data byte. (See
Table
FIGURE 5-14:
Communication”).
DS21996D-page 34
SCLK
SDA
5-5).
Note:
PWP (Permanent Write-Protect)
S
Unlike SWP and CWP, a V
1
0
2
1
Timing Diagram for Setting Permanently Write-Protect (See
Address Byte
3
1
4
0
A
5
2
6
A
1
A
7
0
Table 5-4
MCP98242
W
8
A
C
K
HI_WP
1
X
and
is not applied on the A0 pin to execute PWP.
2
X
Word Address
3
X
4
X
5
X
Unlike SWP and CWP, a V
A0 pin to execute PWP. The state of A2, A1, and A0 is
user selectable. However, the address pin states need
to match the slave address bits, as shown in
6
X
Note:
7
X
MCP98242
8
X
Once the Permanent Write-Protect is
executed, it cannot be reversed, even if
the device power is cycled.
A
C
K
1
X
2
X
3
X
 2010 Microchip Technology Inc.
Data
4
X
Section 4.0 “Serial
HI_WP
5
X
6
X
is not applied on the
7
X
MCP98242
8
X
A
C
K
Table
P
5-3.