MCP98242T-CE/MC Microchip Technology, MCP98242T-CE/MC Datasheet - Page 36

• 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
5.3.4.2
Random read operations allow the master to access
any memory location in a random manner. To perform
this type of read operation, the word address must first
be set. This is done by sending the word address to the
MCP98242 as part of a write operation. Once the word
address is sent, the master generates a Start condition
following the Acknowledge. This terminates the write
operation, but not before the internal Address Pointer is
set. The master then issues the Address Byte again,
but with the R/W bit set to a ‘1’. The MCP98242 then
issues an Acknowledge and transmits the 8-bit data
word. The master will not acknowledge the transfer but
does generate a Stop condition and the MCP98242
discontinues transmission
FIGURE 5-16:
DS21996D-page 36
SCLK
SDA
Note:
Random Read
S
In this example, ‘n’ is the current Address Word which ‘00’h and the data is the byte at address ‘n’.
1
1
SCLK
2
0
SDA
Address Byte
Timing Diagram for Random Read (See
3
1
(Figure
4
0
A
5
2
S
6
A
1
5-16).
1
1
A
0
7
2
0
MCP98242
Address Byte
W
8
3
1
A
C
K
4
0
1
0
5
A
2
2
Word Address (n)
0
6
A
1
3
0
A
7
0
MCP98242
4
0
8
R
5
0
A
C
K
6
0
1
X
7
0
2
X
Section 4.0 “Serial
MCP98242
8
0
Data at (n)
3
X
A
C
K
4
X
5
X
6
X
7
X
8
X
 2010 Microchip Technology Inc.
Master
N
A
K
Communication”).
P