MCP9800/1/2/3
2-Wire High-Accuracy Temperature Sensor
Features:
• Temperature-to-Digital Converter
• Accuracy with 12-bit Resolution:
- ±0.5°C (typical) at +25°C
- ±1°C (maximum) from -10°C to +85°C
- ±2°C (maximum) from -10°C to +125°C
- ±3°C (maximum) from -55°C to +125°C
• User-selectable Resolution: 9-12 bit
• Operating Voltage Range: 2.7V to 5.5V
• 2-wire Interface: I
2
C™/SMBus Compatible
• Operating Current: 200 µA (typical)
• Shutdown Current: 1 µA (maximum)
• Power-saving One-shot Temperature
Measurement
• Available Packages: SOT-23-5, MSOP-8, SOIC-8
Description:
Microchip Technology Inc.’s MCP9800/1/2/3 family of
digital temperature sensors converts temperatures
between -55°C and +125°C to a digital word. They
provide an accuracy of ±1°C (maximum) from -10°C to
+85°C.
The
MCP9800/1/2/3
family
comes
with
user-programmable registers that provide flexibility for
temperature sensing applications. The register settings
allow user-selectable 9-bit to 12-bit temperature
measurement resolution, configuration of the
power-saving Shutdown and One-shot (single
conversion on command while in Shutdown) modes
and the specification of both temperature alert output
and hysteresis limits. When the temperature changes
beyond the specified limits, the MCP9800/1/2/3 outputs
an alert signal. The user has the option of setting the
alert output signal polarity as an active-low or
active-high comparator output for thermostat operation,
or as temperature event interrupt output for
microprocessor-based systems.
This sensor has an industry standard 2-wire, I
2
C™/
SMBus compatible serial interface, allowing up to eight
devices to be controlled in a single serial bus. These
features make the MCP9800/1/2/3 ideal for
sophisticated
multi-zone
temperature-monitoring
applications.
Typical Applications:
•
•
•
•
•
•
•
Personal Computers and Servers
Hard Disk Drives and Other PC Peripherals
Entertainment Systems
Office Equipment
Data Communication Equipment
Mobile Phones
General Purpose Temperature Monitoring
Typical Application
V
DD
MCP9800/02
V
DD
1
GND 2
ALERT 3
5
4
R
SDA
SCLK
R
PULL-UP
PIC
®
Microcontroller
PIC16F737
I
2
C™ Port
Package Types
MCP9800
MCP9802
SOT-23-5
V
DD
1
GND 2
ALERT 3
4 SCLK
5 SDA
MCP9801
MCP9803
SOIC, MSOP
SDA 1
SCLK 2
ALERT 3
GND 4
8 V
DD
7 A0
6 A1
5 A2
I/O Port
MCP9802/03:
Serial Bus time-out 35 ms (typ.)
MCP9800/01:
No Serial Bus time-out
2010 Microchip Technology Inc.
DS21909D-page 1
MCP9800/1/2/3
NOTES:
DS21909D-page 2
2010 Microchip Technology Inc.
MCP9800/1/2/3
1.0
ELECTRICAL
CHARACTERISTICS
†Notice:
Stresses above those listed under “Maximum
ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
Absolute Maximum Ratings †
V
DD
....................................................................... 6.0V
Voltage at all Input/Output pins .....GND – 0.3V to 5.5V
Storage temperature .......................... -65°C to +150°C
Ambient temp. with power applied ..... -55°C to +125°C
Junction Temperature (T
J
) ................................. 150°C
ESD protection on all pins (HBM:MM) .......(4 kV:400V)
Latch-Up Current at each pin ........................ ±200 mA
DC CHARACTERISTICS
Electrical Specifications:
Unless otherwise indicated, V
DD
= 2.7V to 5.5V, GND = Ground, and
T
A
= -55°C to +125°C.
Parameters
Power Supply
Operating Voltage Range
Operating Current
Shutdown Current
Power-on-Reset Threshold (POR)
Line Regulation
Temperature Sensor Accuracy
Accuracy with 12-bit Resolution:
T
A
= +25°C
-10°C < T
A
+85°C
-10°C < T
A
+125°C
-55°C < T
A
+125°C
Internal
ADC
Conversion Time:
9-bit Resolution
10-bit Resolution
11-bit Resolution
12-bit Resolution
Alert Output (Open-drain)
High-level Current
Low-level Voltage
Thermal Response
Response Time
t
RES
—
1.4
—
s
Time to 63% (89°C)
27°C (Air) to 125°C (oil bath)
I
OH
V
OL
—
—
—
—
1
0.4
µA
V
V
OH
= 5V
I
OL
= 3 mA
t
CONV
t
CONV
t
CONV
t
CONV
—
—
—
—
30
60
120
240
75
150
300
600
ms
ms
ms
ms
33 samples/sec (typical)
17 samples/sec (typical)
8 samples/sec (typical)
4 samples/sec (typical)
T
ACY
T
ACY
T
ACY
T
ACY
—
-1.0
-2.0
-3.0
±0.5
—
—
—
—
+1.0
+2.0
+3.0
°C
°C
°C
°C
V
DD
= 3.3V
V
DD
= 3.3V
V
DD
= 3.3V
V
DD
= 3.3V
V
DD
I
DD
I
SHDN
V
POR
Δ°C/ΔV
2.7
—
—
—
—
—
200
0.1
1.7
0.2
5.5
400
1
—
—
V
µA
µA
V
°C/V
Continuous Operation
Shutdown mode
V
DD
falling edge
V
DD
= 2.7V to 5.5V
Sym
Min
Typ
Max
Unit
Conditions
2010 Microchip Technology Inc.
DS21909D-page 3
MCP9800/1/2/3
DIGITAL INPUT/OUTPUT PIN CHARACTERISTICS
Electrical Specifications:
Unless otherwise indicated, V
DD
= 2.7V to 5.5V, GND = Ground and
T
A
= -55°C to +125°C.
Parameters
Input
High-level Voltage
Low-level Voltage
Input Current
Output (SDA)
Low-level Voltage
High-level Current
Low-level Current
Capacitance
SDA and SCLK Inputs
Hysteresis
V
HYST
0.05 V
DD
—
—
V
V
OL
I
OH
I
OL
C
IN
—
—
6
—
—
—
—
10
0.4
1
—
—
V
µA
mA
pF
I
OL
= 3 mA
V
OH
= 5V
V
OL
= 0.6V
V
IH
V
IL
I
IN
0.7 V
DD
—
-1
—
—
—
—
0.3 V
DD
+1
V
V
µA
Sym
Min
Typ
Max
Units
Conditions
Serial Input/Output (SCLK, SDA, A0, A1, A2)
Graphical Symbol Description
INPUT
Voltage
V
DD
Voltage
V
DD
V
IH
V
IL
Time
Current
Current
I
OL
I
IN
Time
I
OH
Time
V
OL
Time
OUTPUT
TEMPERATURE CHARACTERISTICS
Electrical Specifications:
Unless otherwise indicated, V
DD
= +2.7V to +5.5V, GND = Ground.
Parameters
Temperature Ranges
Specified Temperature Range
Operating Temperature Range
Storage Temperature Range
Thermal Package Resistances
Thermal Resistance, 5L-SOT23
Thermal Resistance, 8L-SOIC
Thermal Resistance, 8L-MSOP
Note 1:
JA
JA
JA
—
—
—
256
163
206
—
—
—
°C/W
°C/W
°C/W
T
A
T
A
T
A
-55
-55
-65
—
—
—
+125
+125
+150
°C
°C
°C
(Note
1)
Sym
Min
Typ
Max
Units
Conditions
Operation in this range must not cause T
J
to exceed Maximum Junction Temperature (+150°C).
DS21909D-page 4
2010 Microchip Technology Inc.
MCP9800/1/2/3
SERIAL INTERFACE TIMING SPECIFICATIONS
Electrical Specifications:
Unless otherwise indicated, V
DD
= 2.7V to 5.5V, GND = Ground, -55°C < T
A
< +125°C,
C
L
= 80 pF, and all limits measured to 50% point.
Parameters
Serial Port Frequency
Clock Period
Low Clock
High Clock
Rise Time
Fall Time
Data Setup Before SCLK High
Data Hold After SCLK Low
Start Condition Setup Time
Start Condition Hold Time
Stop Condition Setup Time
Bus Idle
Time Out
Sym
f
SC
f
SC
t
SC
t
LOW
t
HIGH
t
R
t
F
t
SU-DATA
t
H-DATA
t
SU-START
t
H-START
t
SU-STOP
t
IDLE
t
OUT
Min
0
10
2.5
1.3
0.6
20
20
0.1
0
0.6
0.6
0.6
1.3
25
Typ
—
—
—
—
—
—
—
—
—
—
—
—
—
35
Max
400
400
—
—
—
300
300
—
0.9
—
—
—
—
50
Units
kHz
kHz
µs
µs
µs
ns
ns
µs
µs
µs
µs
µs
µs
ms
MCP9802/03 only
10% to 90% of V
DD
(SCLK, SDA)
90% to 10% of V
DD
(SCLK, SDA)
Conditions
I
2
C
MCP9800/01
SMBus
MCP9802/03
2-Wire I
2
C™/SMBus Compatible Interface
Timing Diagram
-S
T
t
H AR
T
-S
TA
R
T
P
IG
H
TO
O
U
-S
W
t
S
t
H
SD
A
SC
L
U
-D
AT
A
t
S
Start Condition
t
H
Data Transmission
-D
AT
A
t
R
,t
F
t
L
Stop Condition
2010 Microchip Technology Inc.
t
S
t
B
DS21909D-page 5
-F
R
U
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