MCP98242T-CE/MC Microchip Technology, MCP98242T-CE/MC Datasheet - Page 18

• 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
5.1.2
The MCP98242 has a 16-bit Configuration register
(CONFIG) that allows the user to set various functions
for a robust temperature monitoring system. Bits 10
thru 0 are used to select Event output boundary
hysteresis, device Shutdown or Low-Power mode,
temperature boundary and critical temperature lock,
temperature Event output enable/disable. In addition,
the user can select the Event output condition (output
set for T
T
output polarity and mode (Comparator Output or
Interrupt Output mode).
The temperature hysteresis bits 10 and 9 can be used
to
temperature
user-specified
Section 5.2.2 “Temperature Hysteresis (T
REGISTER 5-3:
DS21996D-page 18
bit 15
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 15-11
bit 10-9
bit 8
CRIT
Crit. Lock
prevent
R/W-0
U-0
only), read Event output status and set Event
—
UPPER
SENSOR CONFIGURATION
REGISTER (CONFIG)
output
gradually
and T
Unimplements: Read as ‘0’
T
00 = 0°C (power-up default)
01 = 1.5°C
10 = 3.0°C
11 = 6.0°C
This bit cannot be altered when either of the lock bits are set (bit 6 and bit 7), refer to
“Event Output
Shutdown Mode (SHDN):
0 =
1 =
In shutdown, all power-consuming activities are disabled, though all registers can be written to or read.
This bit cannot be set ‘1’ when either of the lock bits is set (bit 6 and bit 7). However, it can be cleared
‘0’ for Continuous Conversion while locked. (Refer to
UPPER
Win. Lock
temperature
R/W-0
U-0
LOWER
—
CONFIGURATION REGISTER (CONFIG)  ADDRESS ‘0000 0001’b
Continuous Conversion (power-up default)
Shutdown (Low-Power mode)
chatter
and T
changes
temperature boundary or
LOWER
W = Writable bit
‘1’ = Bit is set
Configuration”.
when
Int. Clear
R/W-0
boundary
U-0
—
Limit Hysteresis (T
beyond
the
ambient
Event Stat.
HYST
(see
U-0
R-0
—
the
)”.
HYST
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
Event Cnt.
R/W-0
):
The Continuous Conversion or Shutdown mode is
selected using bit 8. In Shutdown mode, the band gap
temperature
temperature and the Ambient Temperature register
(T
temperature data (see
Mode”). Bits 7 and 6 are used to lock the
user-specified boundaries T
to prevent an accidental rewrite. Bits 5 thru 0 are used
to configure the temperature Event output pin. All
functions
Section 5.2.3 “Event Output
U-0
—
A
) holds the previous successfully converted
Section 5.2.1 “Shutdown
are
Event Sel.
R/W-0
R/W-0
sensor
described
T
HYST
 2010 Microchip Technology Inc.
circuit
x = Bit is unknown
Section 5.2.1 “Shutdown
Event Pol.
UPPER
R/W-0
R/W-0
in
Configuration”).
Mode”)
, T
Register 5-3
stops
LOWER
Section 5.2.3
Event Mod.
converting
R/W-0
SHDN
R/W-0
and T
bit 8
bit 0
(see
CRIT