Datasheet

MCP9843/98243
DS22153C-page 2 © 2009 Microchip Technology Inc.
Sensor Typical Accuracy Performance
Note: This accuracy data from the production system represents the typical accuracy performance of the
MCP98242 Memory Module Temperature Sensor. The MCP98242 production methodology is also used for
the MCP9843/98243 to achieve the same typical accuracy performance.
0%
10%
20%
30%
40%
50%
-1.0 -0.8 -0.6 -0.4 -0.2
0.0 0.2 0.4 0.6 0.8 1.0
Temperature Accuracy (°C)
Occurrences
T
A
= +85°C
1,063,478 units
63 Production lots
Statistics:
Average = 0.003 °C
St. Dev = 0.13 °C
±3 Sigma = ±0.4 °C
MCP98243 VS. MCP98242
Feature MCP98243 MCP98242
Event Output in Shutdown Mode Event Output De-asserts Event Output Remains in previous
state. If the output asserts before
shutdown command, it remains
asserted during shutdown
I
2
C communication Timeout Range t
OUT
= 25 ms to 35 ms t
OUT
= 20 ms to 50 ms
I
2
C Maximum Bus Frequency 400 kHz 100 kHz
I
2
C SCL & SDA V
IL
/V
IH
voltage levels V
IL_MAX
=0.3*V
DD
, V
IH_MIN
=0.7*V
DD
V
IL_MAX
= 0.8V, V
IH_MIN
= 2.1V
V
HV A0
range 7V to 12V 8V to 12V
I
2
C Spike Supression 50 ns —
I
2
C input hysteresis 0.05V
DD
0.5V
Device/Revision ID Register 0x2101 (hex) 0x2001