MCP9802 Microchip Technology Inc., MCP9802 Datasheet

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MCP9802

Manufacturer Part Number
MCP9802
Description
2-wire High-accuracy Temperature Sensor
Manufacturer
Microchip Technology Inc.
Datasheet

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Quantity
Price
Part Number:
MCP9802A0T-M/OT
Manufacturer:
MICROCHIP
Quantity:
12 000
Part Number:
MCP9802A5T-M/OT
Manufacturer:
MICROCHIP
Quantity:
12 000
Part Number:
MCP9802A5T-M/OT
Manufacturer:
MICROCHIP/微芯
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20 000
Part Number:
MCP9802AOT-M/OT
Manufacturer:
MICROCHIP
Quantity:
12 000
Features
• Temperature-to-Digital Converter
• Accuracy with 12-bit Resolution:
• User-selectable Resolution: 9 – 12 bit
• Operating Voltage Range: 2.7V to 5.5V
• 2-wire Interface: I
• Operating Current: 200 µA (typ.)
• Shutdown Current: 1 µA (max.)
• Power-saving One-shot Temperature
• Available Packages: SOT-23-5, MSOP-8, SOIC-8
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
 2004 Microchip Technology Inc.
ALERT
- ±0.5°C (typ.) at +25°C
- ±1°C (max.) from -10°C to +85°C
- ±2°C (max.) from -10°C to +125°C
- ±3°C (max.) from -55°C to +125°C
Measurement
GND
V
DD
MCP9800/02
1
2
3
2-Wire High-Accuracy Temperature Sensor
2
C™/SMBus Compatible
5
4
R
SCLK
SDA
PULL-UP
R
V
DD
Microcontroller
PIC16F737
PICmicro
I/O Port
®
MCP9800/1/2/3
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 (max.) from -10°C to
+85°C.
The MCP9800/1/2/3 family comes with user-program-
mable 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
the 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
SMBus compatible serial interface, allowing up to eight
devices to be controlled in a single serial bus. These fea-
tures make the MCP9800/1/2/3 ideal for sophisticated
multi-zone temperature-monitoring applications.
Package Types
ALERT
GND
MCP9800/02A0: A2, A1, A0 are internally set to (0, 0, 0)
MCP9800/02A5: A2, A1, A0 are internally set to (1, 0, 1)
MCP9802/03: Serial Bus time-out 35 ms (typ.)
V
DD
1
2
3
MCP9800
MCP9802
SOT-23-5
5
4
SDA
SCLK
ALERT
SCLK
SDA
GND
SOIC, MSOP
1
2
3
4
DS21909B-page 1
MCP9801
MCP9803
8
7
6
5
2
V
C™/
A0
A1
A2
DD

Related parts for MCP9802

MCP9802 Summary of contents

Page 1

... MCP9800 MCP9802 SOT-23-5 ® PICmicro GND 2 PIC16F737 ALERT 3 MCP9800/02A0: A2, A1, A0 are internally set to ( I/O Port MCP9800/02A5: A2, A1, A0 are internally set to ( MCP9802/03: Serial Bus time-out 35 ms (typ.) 2 C™/ MCP9801 MCP9803 SOIC, MSOP SDA V SDA SCLK A0 2 ...

Page 2

... DD ° 3.3V DD ° 3.3V DD ° 3.3V DD ° 3. samples/sec (typ samples/sec (typ samples/sec (typ samples/sec (typ.) µ Time to 63% (88°C) 27°C (Air) to 125°C (oil bath)  2004 Microchip Technology Inc. ...

Page 3

... 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: Operation in this range must not cause T  2004 Microchip Technology Inc. MCP9800/1/2/3 = 2.7V to 5.5V, GND = Ground and DD Min Typ Max Units 0.7 V — ...

Page 4

... H-START t H-DATA t t SU-STOP IDLE < +125°C, A Conditions MCP9800/01 SMBus MCP9802/03 10 (SCLK, SDA) DD 90 (SCLK, SDA) DD MCP9802/03 only t OUT t t HIGH LOW  2004 Microchip Technology Inc. ...

Page 5

... Average Temperature Accuracy vs. Ambient Temperature. 3.0 Resolution 2.0 11-Bit 1.0 12-Bit 0.0 -1.0 9-Bit -2.0 10-Bit -3.0 -55 -35 - (°C) A FIGURE 2-3: Average Temperature Accuracy vs. Ambient Temperature, V  2004 Microchip Technology Inc. 100 3. 80% 70% 60% 50% 40% 30% 20% 10 105 125 FIGURE 2-4: = 3.3V. Histogram 400 ...

Page 6

... Average of 10 samples per package 125 = 5.5V DD 105 = 3. 2. 105 125 -2 0 vs. FIGURE 2-9: OL Response vs Time 105 125 SOIC MSOP SOT-23 27°C (Air) to 125°C (Oil bath Time (s) MCP980X Thermal  2004 Microchip Technology Inc. ...

Page 7

... PIN DESCRIPTION The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE MCP9800 MCP9801 MCP9802 MCP9803 SOT-23-5 MSOP, SOIC — 5 — 6 — 3.1 Serial Data Pin (SDA) The SDA is a bidirectional input/output pin, used to serially transmit data to and from the host controller. ...

Page 8

... IC IC   temperature in kelvin = change in diode base-emitter BE voltage k = Boltzmann's constant q = electron charge = currents with n:1 ratio digital word that corresponds to the The converter has an Register (CONFIG)” and ADC Resolution” for details.  2004 Microchip Technology Inc. ...

Page 9

... Unimplemented: Read as ‘0’ bit 2-0 Pointer bits 00 = Temperature Register 01 = Configuration Register 10 = Temperature Hysteresis Register 11 = Temperature Limit-set Register Legend Readable bit - n = Value at POR  2004 Microchip Technology Inc. Fault Queue Alert Polarity Alert Comp/Int Configuration Register Temperature Register T HYST Register T SET Register ...

Page 10

... Microchip Technology Inc. ...

Page 11

... Upper Half: R/W-0 R/W-0 R/W Sign 2 °C/bit 2 °C/bit bit 15 Lower Half: R/W-0 R °C/bit 0 bit 7 Legend Readable bit W = Writable bit - n = Value at POR ‘1’ = Bit is set  2004 Microchip Technology Inc. MCP9800/1/2/3 ) SET R/W-0 R/W-0 R/W-0 R/W °C/bit 2 °C/bit 2 °C/bit 2 R-0 R-0 R Unimplemented bit, read as ‘ ...

Page 12

... DS21909B-page 12 register is 75°C HYST R/W-0 R/W-0 R/W °C/bit 2 °C/bit 2 °C/bit R-0 R-0 R Unimplemented bit, read as ‘0’ ‘0’ = Bit is cleared ) R/W-0 R/W °C/bit 2 °C/bit bit 8 R-0 R-0 R bit Bit is unknown  2004 Microchip Technology Inc. ...

Page 13

... Interrupt Mode 0 = Comparator Mode (Power-up default) bit 0 SHUTDOWN bit 1 = Enable 0 = Disable (Power-up default) Legend Readable bit - n = Value at POR  2004 Microchip Technology Inc. R/W-0 R/W-0 R/W-0 Resolution Fault Queue W = Writable bit U = Unimplemented bit, read as ‘0’ ‘1’ = Bit is set ‘0’ = Bit is cleared ...

Page 14

... Shutdown (Bit SET HYST 1 ALERT Comparator Mode Active-Low ALERT Interrupt Mode Active-Low FIGURE 4-2: . The pin remains active SET . The Comparator mode is HYST A . However, the output is SET drifts below T , the MCP9800/ A HYST Alert Output.  2004 Microchip Technology Inc. ...

Page 15

... Microchip Technology Inc. 4.4 Summary of Power-up Default The MCP9800/1/2/3 has an internal Power-on Reset (POR) circuit. If the power supply voltage V down to the 1.7V (typ.) threshold, the device resets the registers to the power-up default settings. Table 4-2 shows the power-up default summary. ...

Page 16

... MCP9800/02A0 and MCP9800/02A5 is <1001000> and <1001101> in binary, respectively. The address for the MCP9802/03 <1001,A2,A1,A0> in binary, where the A0, A1 and A2 bits are set externally by connecting the corresponding pins to V <1> or GND <0>. The 7-bit address trans- DD mitted in the serial bit stream must match the selected address for the MCP9800/1/2/3 to respond with an ACK ...

Page 17

... Microchip Technology Inc. MCP9800/1/2/3 5.1.7 TIME OUT (MCP9802/03) If the SCLK stays low for time specified by t MCP9802/03 resets the serial interface. This dictates SU-DATA the minimum clock speed as specified in the SMBus 2 specification. The I C bus specification does not limit clock speed and, therefore, the master can hold the clock indefinitely to process data (MCP9800/01 only) ...

Page 18

... K K MSB Data Master MCP980X Data Master LSB Data Master  2004 Microchip Technology Inc. ...

Page 19

... Address Byte Write 2-byte Data SCLK SDA Address Byte S = START Condition P = STOP Condition FIGURE 5-3: Write 1-byte and 2-byte data from a Register.  2004 Microchip Technology Inc ...

Page 20

... K Address Byte MCP980X MCP980X Data Master Data Master  2004 Microchip Technology Inc. ...

Page 21

... Address Byte Note: User can continue to receive 2-byte data indefinitely from a previously set register pointer START Condition P = STOP Condition FIGURE 5-5: Receive 2-byte data from previously set pointer.  2004 Microchip Technology Inc ...

Page 22

... MCP9800/1/2/3. However, in order to maximize the temperature accuracy, the SDA and SCLK pins need to be lightly loaded. SDA SCLK 24LC01 EEPROM MCP980X Temperature Sensor Multiple Devices on SMBus. and GND pins. A high-frequency measures temperature by  2004 Microchip Technology Inc. ...

Page 23

... Standard OTP marking consists of Microchip part number, year code, week code, and traceability code.  2004 Microchip Technology Inc. Example: Part Number MCP9800 MCP9800A0T-M/OTG LDNN MCP9800A5T-M/OTG LJNN MCP9800/1/2/3 Part Number MCP9802 MCP9802A0T-M/OTG JKNN MCP9802A5T-M/OTG JRNN Example: G9803M 425256 Example: GMCP9803 M/SN0425 256 DS21909B-page 23 ...

Page 24

... E .102 .110 .118 E1 .059 .064 .069 D .110 .116 .122 L .014 .018 .022 φ .004 .006 .008 B .014 .017 .020 α β α A2 MILLIMETERS MIN NOM MAX 5 0.95 1.90 0.90 1.18 1.45 0.90 1.10 1.30 0.00 0.08 0.15 2.60 2.80 3.00 1.50 1.63 1.75 2.80 2.95 3.10 0.35 0.45 0. 0.09 0.15 0.20 0.35 0.43 0.  2004 Microchip Technology Inc. ...

Page 25

... Mold Draft Angle Top Mold Draft Angle Bottom *Controlling Parameter Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010" (0.254mm) per side. JEDEC Equivalent: MO-187 Drawing No. C04-111  2004 Microchip Technology Inc φ ...

Page 26

... E .228 .237 .244 E1 .146 .154 .157 D .189 .193 .197 h .010 .015 .020 L .019 .025 .030 .008 .009 .010 B .013 .017 .020 MILLIMETERS MIN NOM MAX 8 1.27 1.35 1.55 1.75 1.32 1.42 1.55 0.10 0.18 0.25 5.79 6.02 6.20 3.71 3.91 3.99 4.80 4.90 5.00 0.25 0.38 0.51 0.48 0.62 0. 0.20 0.23 0.25 0.33 0.42 0.  2004 Microchip Technology Inc. ...

Page 27

... Device Slave Tape & Reel Temperature Address Range Device: MCP9800: Temperature Sensor MCP9801: Temperature Sensor MCP9802: Temperature Sensor MCP9803: Temperature Sensor A0 = Slave address set to ‘000’ Slave address set to ‘101’ Tape and Reel: = Blank T = Tape and Reel Temperature +125 C ...

Page 28

... MCP9800/1/2/3 NOTES: DS21909B-page 28  2004 Microchip Technology Inc. ...

Page 29

... Use of Microchip’s products as critical components in life support systems is not authorized except with express written approval by Microchip. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.  2004 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC ...

Page 30

... Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Taiwan - Hsinchu Tel: 886-3-572-9526 Fax: 886-3-572-6459  2004 Microchip Technology Inc. EUROPE Austria - Weis Tel: 43-7242-2244-399 Fax: 43-7242-2244-393 Denmark - Ballerup Tel: 45-4420-9895 Fax: 45-4420-9910 France - Massy ...

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