Data Sheet

PCT2202
Ultra low power, 1.8 V, 1 deg. C accuracy, digital temperature
sensor with I2C-bus interface
Rev. 1.1 — 14 August 2015
Product data sheet
1. General description
The PCT2202 is an I2C-bus, serial output temperature sensor available in a tiny WLCSP6
package. Requiring no external components, the PCT2202 is capable of reading
temperatures at 12-bit resolution or 0.0625 C with an accuracy of 0.5 C from
0 C to 85 C.
The PCT2202 features SMBus and I2C-bus interface compatibility including HSM
(High-Speed Mode: 3.4 MHz), and allows up to four devices on one bus. It also features
an SMB alert function.
The PCT2202 is ideal for extended temperature measurement in a variety of
communication, computer, consumer, environmental, industrial, and instrumentation
applications. The device is specified for operation over a temperature range of 40 C
to +125 C and a voltage range of 1.65 V to 1.95 V.
2. Features and benefits
 Tiny WLCSP6 package
 Accuracy: 0.5 C from 0 C to +85 C
 Low quiescent current:
 30 A Active
 1 A Shut-down
 Supply range: 1.8 V  0.15 V
 Resolution: 12 bits
 Two-wire I2C-bus serial interface including HS Mode 3.4 MHz
 Firmware identical to TMP102
 ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM1 per
JESD22-C101
 Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
3. Applications




1.
Portable and battery-powered applications
Power supply temperature monitoring
Computer peripheral thermal protection
Notebook computers
WLCSP6 was too small so CDM was tested with die in package.
PCT2202
NXP Semiconductors
Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor




Battery management
Thermostat controls
Electromechanical device temperatures
General temperature measurements:
 Industrial controls
 Test equipment
 Medical instrumentation
4. Ordering information
Table 1.
Ordering information
Type number
Topside
mark
Package
Name
Description
PCT2202UK
22x[1]
WLCSP6
wafer level chip-size package; 6 bumps; 0.69  1.09  0.382 mm PCT2202UK
(backside coating included)
[1]
Version
x = work week of assembly operation.
4.1 Ordering options
Table 2.
Ordering options
Type number
Orderable
part number
Package
Packing method
Minimum
order
quantity
Temperature range
PCT2202UK
PCT2202UKZ
WLCSP6
Reel 7” Q1/T1
*special mark chips dry pack
3000
Toper = 55 C to +125 C
PCT2202
Product data sheet
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
5. Block diagram
VCC
PCT2202
BIAS
REFERENCE
POINTER
REGISTER
BAND GAP
TEMP SENSOR
OSCILLATOR
12-BIT
SIGMA-DELTA
A-to-D
CONVERTER
CONFIGURATION
REGISTER
TEMPERATURE
REGISTER
TOS
REGISTER
COMPARATOR/
INTERRUPT
THYST
REGISTER
POWER-ON
RESET
ALERT
LOGIC CONTROL AND INTERFACE
002aah312
A0
Fig 1.
PCT2202
Product data sheet
SCL
SDA
GND
Block diagram of PCT2202
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
6. Pinning information
6.1 Pinning
bump A1
index area
PCT2202UK
SDA
A1
A2
SCL
VCC
B1
B2
GND
A0
C1
C2
ALERT
002aah313
Transparent top view
Fig 2.
Pin configuration for WLCSP6
6.2 Pin description
Table 3.
PCT2202
Product data sheet
Pin description
Symbol
Pin
Description
SCL
A2
Digital input. I2C-bus serial clock input.
GND
B2
Ground. To be connected to the system ground.
ALERT
C2
Overtemperature Shutdown output; open-drain.
A0
C1
Digital input. User-defined I2C-bus address (connect to VDD, GND SDA or
SCL).
VCC
B1
Power supply.
SDA
A1
Digital I/O. I2C-bus serial bidirectional data line; open-drain.
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
7. Functional description
The PCT2202 is a digital temperature sensor that is optimal for thermal management and
thermal protection applications. The PCT2202 is two-wire and SMBus interface
compatible, and is specified over a temperature range of 40 C to +125 C.
Pull-up resistors are required on SCL, SDA and ALERT. A 0.01 F bypass capacitor is
recommended on the power supply pin, as shown in Figure 3.
VDD
0.01 μF
5
SCL
4
1
A0
PCT2202
to two-wire
master
SDA
3
6
ALERT (output)
2
GND
002aah464
Remark: SCL, SDA and ALERT pins require pull-up resistors.
Fig 3.
Typical connections
The temperature sensor in the PCT2202 is the chip itself. Thermal paths run through the
package leads, as well as the plastic package. The lower thermal resistance of metal
causes the leads to provide the primary thermal path.
To maintain accuracy in applications requiring air or surface temperature measurement,
care should be taken to isolate the package and leads from ambient air temperature. A
thermally-conductive adhesive is helpful in achieving accurate surface temperature
measurement.
7.1 Pointer register
Figure 4 shows the internal register structure of the PCT2202. The 8-bit Pointer register of
the device is used to address a given data register. The Pointer register uses the two
LSBs (see Table 4) to identify which of the data registers should respond to a read or write
command. Table 4 identifies the bits of the Pointer register byte. During a write command,
P2 through P7 must always be 0. Table 5 describes the pointer address of the registers
available in the PCT2202. Power-up reset value of P1/P0 is ‘00’. By default, the PCT2202
reads the temperature on power-up.
PCT2202
Product data sheet
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
POINTER
REGISTER
TEMPERATURE
REGISTER
SCL
CONFIGURATION
REGISTER
I/O
CONTROL
INTERFACE
TLOW
REGISTER
SDA
THIGH
REGISTER
002aag839
Fig 4.
Table 4.
Internal register structure
Pointer register byte
P7
P6
P5
P4
P3
P2
0
0
0
0
0
0
Table 5.
P1
P0
register bits
Pointer addresses
P1
P0
Register
0
0
Temperature register (read only)
0
1
Configuration register (read/write)
1
0
TLOW register (read/write)
1
1
THIGH register (read/write)
7.2 Temperature register
The Temperature register of the PCT2202 is configured as a 12-bit read-only register
(Configuration register EM bit = 0, see Section 7.3.1 “EM - Extended mode bit”), or as a
13-bit, read-only register (Configuration register EM bit = 1) that stores the output of the
most recent conversion. Two bytes must be read to obtain data, and are described in
Table 6 and Table 7. Note that byte 1 is the most significant byte, followed by byte 2, the
least significant byte. The first 12 bits (13 bits in Extended mode) are used to indicate
temperature. The least significant byte does not have to be read if that information is not
needed. The data format for temperature is summarized in Table 8 and Table 9. One LSB
equals 0.0625 C. Negative numbers are represented in binary two’s complement format.
Following power-up or reset, the Temperature register will read 0 C until the first
conversion is complete. Bit D0 of byte 2 indicates Normal mode (EM bit = 0) or Extended
mode (EM bit = 1) and can be used to distinguish between the two temperature register
data formats. The unused bits in the Temperature register always read ‘0’.
PCT2202
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
Table 6.
Byte 1 of Temperature register
Extended mode 13-bit configuration shown in parentheses.
D7
D6
D5
D4
D3
D2
D1
D0
T11
(T12)
T10
(T11)
T9
(T10)
T8
(T9)
T7
(T8)
T6
(T7)
T5
(T6)
T4
(T5)
Table 7.
Byte 2 of Temperature register
Extended mode 13-bit configuration shown in parentheses.
D7
D6
D5
D4
D3
D2
D1
D0
T3
(T4)
T2
(T3)
T1
(T2)
T0
(T1)
0
(T0)
0
(0)
0
(0)
0
(1)
Table 8.
12-bit temperature data format
The resolution for the Temp ADC in Internal temperature mode is 0.0625 C/count.
Temperature (C)
Digital output (binary)
Hex
128
0111 1111 1111
7FFh
127.9375
0111 1111 1111
7FFh
100
0110 0100 0000
640h
80
0101 0000 0000
500h
75
0100 1011 0000
4B0h
50
0011 0010 0000
320h
25
0001 1001 0000
190h
0.25
0000 0000 0100
004h
0
0000 0000 0000
000h
0.25
1111 1111 1100
FFCh
25
1110 0111 0000
E70h
55
1100 1001 0000
C90h
For positive temperatures (for example, +50 C): Two’s complement is not performed on
positive numbers, therefore, simply convert the number to binary code with the 12-bit,
left-justified format, and MSB = 0 to denote a positive sign.
Example: (+50 C) / (0.0625 C/count) = 800 (decimal) = 320h = 0011 0010 0000.
For negative temperatures (for example, 25 C): Generate the two’s complement of a
negative number by complementing the absolute value binary number and adding 1.
Denote a negative number with MSB = 1.
Example: (25 C) / (0.0625 C/count) = 400 (decimal) = 190h = 001 1001 0000.
Two’s complement format: 1110 0110 1111 + 1 = 1110 0111 0000.
PCT2202
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
Table 9.
13-bit temperature data format
Temperature (C)
Digital output (binary)
Hex
150
0 1001 0110 0000
0960h
128
0 1000 0000 0000
0800h
127.9375
0 0111 1111 1111
07FFh
100
0 0110 0100 0000
0640h
80
0 0101 0000 0000
0500h
75
0 0100 1011 0000
04B0h
50
0 0011 0010 0000
0320h
25
0 0001 1001 0000
0190h
0.25
0 0000 0000 0100
0004h
0
0 0000 0000 0000
0000h
0.25
1 1111 1111 1100
1FFCh
25
1 1110 0111 0000
1E70h
55
1 1100 1001 0000
1C90h
7.3 Configuration register
The Configuration register is a 16-bit read/write register used to store bits that control the
operational modes of the temperature sensor. Read/write operations are performed
MSByte first. The format and power-up/reset value of the Configuration register is shown
in Table 10. For compatibility, the first byte corresponds to the Configuration register in the
LM75 and PCT2075. All registers are updated byte-by-byte.
Table 10.
Configuration and power-up/reset format
Byte
D7
D6
D5
D4
D3
D2
D1
D0
1
OS
R1
R0
F1
F0
POL
TM
SD
0
1
1
0
0
0
0
0
CR1
CR0
AL
EM
0
0
0
0
1
0
1
0
0
0
0
0
2
7.3.1 EM - Extended mode bit
The Extended mode bit configures the device for Normal mode operation (EM = 0) or
Extended mode operation (EM = 1). In Normal mode, the Temperature register and
High-limit and Low-limit registers use a 12-bit data format. Normal mode is used to make
the PCT2202 compatible with the LM75 and PCT2075.
Extended mode (EM = 1) allows measurement of temperatures above +128 C by
configuring the Temperature register and High-limit and Low-limit registers for 13-bit data
format.
7.3.2 AL - ALERT bit
The AL bit is a read-only function. Reading the AL bit will provide information about the
comparator mode status. The state of the POL bit inverts the polarity of data returned from
the AL bit. For POL = 0, the AL bit will read as ‘1’ until the temperature equals or exceeds
THIGH for the programmed number of consecutive faults, causing the AL bit to read as ‘0’.
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The AL bit will continue to read as ‘0’ until the temperature falls below TLOW for the
programmed number of consecutive faults, when it will again read as ‘1’. The status of the
TM bit does not affect the status of the AL bit.
7.3.3 CR1, CR0 - Conversion rate bits
The conversion rate bits, CR1 and CR0, configure the PCT2202 for conversion rates of
8 Hz, 4 Hz, 1 Hz or 0.25 Hz. The default rate is 4 Hz. The PCT2202 has a typical
conversion time of 26 ms. To achieve different conversion rates, the PCT2202 makes a
conversion and after that powers down and waits for the appropriate delay set by CR1 and
CR0. Table 11 shows the settings for CR1 and CR0.
Table 11.
Conversion rate settings
CR1
CR0
Conversion rate
0
0
0.25 Hz
0
1
1 Hz
1
0
4 Hz (default)
1
1
8 Hz
After power-up or general-call reset, the PCT2202 immediately starts a conversion, as
shown in Figure 5. The first result is available after 26 ms (typical). The active quiescent
current during conversion is 40 A (typical at +27 C). The quiescent current during delay
is 2.2 A (typical at +27 C).
delay(1)
26 ms
26 ms
start-up
start of
conversion
002aag847
(1) Delay is set by CR1 and CR0.
Fig 5.
Conversion start
7.3.4 SD - Shut-down mode bit
The Shut-down mode bit saves maximum power by shutting down all device circuitry
other than the serial interface, reducing current consumption to typically less than 0.5 A.
Shut-down mode is enabled when the SD bit is ‘1’. The device shuts down when current
conversion is completed. When SD is equal to ‘0’, the device maintains a continuous
conversion state.
7.3.5 TM - Thermostat mode bit
The Thermostat mode bit indicates to the device whether to operate in Comparator mode
(TM = 0) or Interrupt mode (TM = 1). For more information on comparator and interrupt
modes, see Section 7.4 “High-limit and low-limit registers”.
PCT2202
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7.3.6 POL - Polarity bit
The Polarity bit allows the user to adjust the polarity of the ALERT pin output. If POL = 0,
the ALERT pin will be active LOW, as shown in Figure 6. For POL = 1, the ALERT pin will
be active HIGH and the state of the ALERT pin is inverted.
THIGH
measured
temperature
TLOW
ALERT pin
(Comparator mode)
POL = 0
ALERT pin
(Interrupt mode)
POL = 0
ALERT pin
(Comparator mode)
POL = 1
ALERT pin
(Interrupt mode)
POL = 1
time
read
read
read
002aag848
Fig 6.
Output transfer function
7.3.7 F1, F0 - Fault queue bits
A fault condition exists when the measured temperature exceeds the user-defined limits
set in the THIGH and TLOW registers. Additionally, the number of fault conditions required to
generate and alert may be programmed using the fault queue. The fault queue is provided
to prevent a false alert as a result of environmental noise. The fault queue requires
consecutive fault measurements in order to trigger the alert function. Table 12 defines the
number of measured faults that may be programmed to trigger an alert condition in the
device. For THIGH and TLOW register format and byte order, see Section 7.4 “High-limit and
low-limit registers”.
PCT2202
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Table 12.
PCT2202 fault settings
F1
F0
Consecutive faults
0
0
1
0
1
2
1
0
4
1
1
6
7.3.8 R1, R0 - Converter resolution bits
R1 and R0 are read-only bits. The PCT2202 converter resolution is set on start-up to ‘11’.
This sets the Temperature register to a 12-bit resolution.
7.3.9 OS - One-shot/conversion ready
The PCT2202 features a One-shot temperature measurement mode. When the device is
in Shut-down mode, writing a ‘1’ to the OS bit starts a single temperature conversion.
During the conversion, the OS bit reads ‘0’. The device returns to the shut-down state at
the completion of the single conversion. After the conversion, the OS bit reads ‘1’. This
feature is useful for reducing power consumption in the PCT2202 when continuous
temperature monitoring is not required.
As a result of the short conversion time, the PCT2202 can achieve a higher conversion
rate. A single conversion typically takes 26 ms and a read can take place in less than
20 s. When using One-shot mode, 30 or more conversions per second are possible.
7.4 High-limit and low-limit registers
In Comparator mode (TM = 0), the ALERT pin becomes active when the temperature
equals or exceeds the value in THIGH and generates a consecutive number of faults
according to fault bits F1 and F0. The ALERT pin remains active until the temperature falls
below the indicated TLOW value for the same number of faults.
In Interrupt mode (TM = 1), the ALERT pin becomes active when the temperature equals
or exceeds the value in THIGH for a consecutive number of fault conditions (as shown in
Table 12). The ALERT pin remains active until a read operation of any register occurs, or
the device successfully responds to the SMBus Alert Response address. The ALERT pin
will also be cleared if the device is placed in Shut-down mode. Once the ALERT pin is
cleared, it becomes active again only when temperature falls below TLOW, and remains
active until cleared by a read operation of any register or a successful response to the
SMBus Alert Response address. Once the ALERT pin is cleared, the above cycle repeats,
with the ALERT pin becoming active when the temperature equals or exceeds THIGH. The
ALERT pin can also be cleared by resetting the device with the General Call Reset
command. This action also clears the state of the internal registers in the device, returning
the device to Comparator mode (TM = 0).
Both operational modes are represented in Figure 6. Table 13 and Table 14 describe the
format for the THIGH and TLOW registers. Note that the most significant byte is sent first,
followed by the least significant byte. Power-up reset values for THIGH and TLOW are:
THIGH = +80 C and TLOW = +75 C. The format of the data for THIGH and TLOW is exactly
the same as the Temperature register — binary two’s complement format.
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Table 13. Byte 1 and Byte 2 of THIGH register
Extended mode 13-bit configuration shown in parentheses.
Byte
D7
D6
D5
D4
D3
D2
D1
D0
1
H11
(H12)
H10
(H11)
H9
(H10)
H8
(H9)
H7
(H8)
H6
(H7)
H5
(H6)
H4
(H5)
2
H3
(H4)
H2
(H3)
H1
(H2)
H0
(H1)
0
(H0)
0
(0)
0
(0)
0
(0)
Table 14. Byte 1 and Byte 2 of TLOW register
Extended mode 13-bit configuration shown in parentheses.
Byte
D7
D6
D5
D4
D3
D2
D1
D0
1
L11
(L12)
L10
(L11)
L9
(L10)
L8
(L9)
L7
(L8)
L6
(L7)
L5
(L6)
L4
(L5)
2
L3
(L4)
L2
(L3)
L1
(L2)
L0
(L1)
0
(L0)
0
(0)
0
(0)
0
(0)
8. Bus overview
The I2C-bus is for 2-way, 2-line communication between different ICs or modules. The two
lines are a serial data line (SDA) and a serial clock line (SCL). Both lines must be
connected to a positive supply via a pull-up resistor when connected to the output stages
of a device. Data transfer may be initiated only when the bus is not busy.
The device that initiates the transfer is called a ‘master’, and the devices controlled by the
master are ‘slaves’. The bus must be controlled by a master device that generates the
serial clock (SCL), controls the bus access, and generates the START and STOP
conditions.
To address a specific device, a START condition is initiated, indicated by pulling the
data line (SDA) from a HIGH to LOW logic level while SCL is HIGH. All slaves on the bus
shift in the slave address byte on the rising edge of the clock, with the last bit indicating
whether a read or write operation is intended. During the ninth clock pulse, the slave being
addressed responds to the master by generating an Acknowledge and pulling SDA LOW.
Data transfer is then initiated and sent over eight clock pulses followed by an
Acknowledge bit. During data transfer SDA must remain stable while SCL is HIGH,
because any change in SDA while SCL is HIGH will be interpreted as a START or STOP
signal.
Once all data have been transferred, the master generates a STOP condition indicated by
pulling SDA from LOW to HIGH, while SCL is HIGH.
8.1 Serial interface
The PCT2202 operates as a slave device only on the I2C-bus and SMBus. Connections to
the bus are made via the open-drain I/O lines SDA and SCL. The SDA and SCL pins
feature integrated spike suppression filters and Schmitt triggers to minimize the effects of
input spikes and bus noise. The PCT2202 supports the transmission protocol for Standard
mode, Fast mode, Fast-mode Plus (1 kHz to 1 MHz) and High-speed mode (1 kHz to
3.4 MHz). All data bytes are transmitted MSByte first.
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8.2 Serial bus address
To communicate with the PCT2202, the master must first address slave devices via a
slave address byte. The slave address byte consists of seven address bits, and a
direction bit indicating the intent of executing a read or write operation.
The PCT2202 features an address pin to allow up to four devices to be addressed on a
single bus. Table 15 describes the pin logic levels used to properly connect up to four
devices.
Table 15.
Address pin (ADD0) and slave addresses
Device two-wire address
A0 pin connection
1001 000
GND
1001 001
VDD
1001 010
SDA
1001 011
SCL
8.3 Write/read operation
Accessing a particular register on the PCT2202 is accomplished by writing the appropriate
value to the Pointer register. The value for the Pointer Register is the first byte transferred
after the slave address byte with the R/W bit LOW. Every write operation to the PCT2202
requires a value for the Pointer register (see Figure 15).
When reading from the PCT2202, the last value stored in the Pointer register by a write
operation is used to determine which register is read by a read operation. To change the
register pointer for a read operation, a new value must be written to the Pointer register.
This action is accomplished by issuing a slave address byte with the R/W bit LOW,
followed by the Pointer register byte. No additional data are required. The master can then
generate a START condition and send the slave address byte with the R/W bit HIGH to
initiate the read command. See Figure 16 for details of this sequence. If repeated reads
from the same register are desired, it is not necessary to continually send the Pointer
register bytes, because the PCT2202 remembers the Pointer register value until it is
changed by the next write operation.
Note that register bytes are sent with the most significant byte first, followed by the least
significant byte.
8.4 Slave mode operations
The PCT2202 can operate as a slave receiver or slave transmitter. As a slave device, the
PCT2202 never drives the SCL line — it is an input only.
8.4.1 Slave receiver mode
The first byte transmitted by the master is the slave address, with the R/W bit LOW. The
PCT2202 then acknowledges reception of a valid address. The next byte transmitted by
the master is the Pointer register. The PCT2202 then acknowledges reception of the
Pointer register byte. The next byte or bytes are written to the register addressed by the
Pointer register. The PCT2202 acknowledges reception of each data byte. The master
can terminate data transfer by generating a START or STOP condition.
PCT2202
Product data sheet
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8.4.2 Slave transmitter mode
The first byte transmitted by the master is the slave address, with the R/W bit HIGH. The
slave acknowledges reception of a valid slave address. The next byte is transmitted by the
slave and is the most significant byte of the register indicated by the Pointer register. The
master acknowledges reception of the data byte. The next byte transmitted by the slave is
the least significant byte. The master acknowledges reception of the data byte. The
master can terminate data transfer by generating a Not-Acknowledge on reception of any
data byte, or generating a START or STOP condition.
8.5 SMBus Alert function
The PCT2202 supports the SMBus Alert function. When the PCT2202 operates in
Interrupt mode (TM = 1), the ALERT pin may be connected as an SMBus Alert signal.
When a master senses that an ALERT condition is present on the ALERT line, the master
sends an SMBus Alert command (0001 1001) to the bus. If the ALERT pin is active, the
device acknowledges the SMBus Alert command and responds by returning its slave
address on the SDA line. The eighth bit (LSB) of the slave address byte indicates if the
ALERT condition was caused by the temperature exceeding THIGH or falling below TLOW.
For POL = 0, this bit is LOW if the temperature is greater than or equal to THIGH; this bit is
HIGH if the temperature is less than TLOW. The polarity of this bit is inverted if POL = 1.
Refer to Figure 17 for details of this sequence.
If multiple devices on the bus respond to the SMBus Alert command, arbitration during the
slave address portion of the SMBus Alert command determines which device will clear its
ALERT status. The device with the lowest two-wire address wins the arbitration. If the
PCT2202 wins the arbitration, its ALERT pin becomes inactive at the completion of the
SMBus Alert command. If the PCT2202 loses the arbitration, its ALERT pin remains
active.
8.6 General Call - Software Reset
The PCT2202 responds to a two-wire General Call address (0000 000) if the eighth bit is
‘0’. The device acknowledges the General Call address and responds to commands in the
second byte. If the second byte is 0000 0110, the PCT2202 internal registers are reset to
power-up values. The PCT2202 does not support the General Address acquire command.
8.7 High-speed (Hs) mode
In order for the two-wire bus to operate faster than the Fm+ speed (1 MHz), the master
device must issue an Hs-mode master code (0000 1xxx) as the first byte after a START
condition to switch the bus to high-speed operation. The PCT2202 does not acknowledge
this byte, but switches its input filters on SDA and SCL and its output filters on SDA to
operate in Hs-mode, allowing transfers at up to 3.4 MHz. After the Hs-mode master code
has been issued, the master transmits a two-wire slave address to initiate a data transfer
operation. The bus continues to operate in Hs-mode until a STOP condition occurs on the
bus. Upon receiving the STOP condition, the PCT2202 switches the input and output
filters back to Fast-mode operation.
PCT2202
Product data sheet
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
8.8 Time-out function
The PCT2202 resets the serial interface if SCL is held LOW for 30 ms (typical). The
PCT2202 releases the bus if it is pulled LOW and waits for a START condition. To avoid
activating the time-out function, it is necessary to maintain a communication speed of at
least 10 kHz for SCL operating frequency to conform to the SMBus specification.
8.9 Noise
The PCT2202 is a very low-power device and generates very low noise on the supply bus.
Applying an RC filter to the VDD pin of the PCT2202 can further reduce any noise the
PCT2202 might propagate to other components. RF in Figure 7 should be less than 5 k
and CF should be greater than 10 nF.
supply voltage
PCT2202
SCL
SDA
GND
VDD
ALERT
A0
RF ≤ 5 kΩ
CF ≥ 10 nF
002aah465
Fig 7.
Noise reduction
9. Limiting values
Table 16. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
Parameter
VDD
supply voltage
Min
Max
Unit
-
2.5
V
VI
input voltage
0.5
+2.5
V
II
input current
5.0
+5.0
mA
Toper
operating temperature
55
+125
C
Tstg
storage temperature
60
+150
C
Tj
junction temperature
-
+125
C
[1]
PCT2202
Product data sheet
Conditions
[1]
Input voltage rating applies to all PCT2202 input voltages.
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
10. Characteristics
Table 17. Characteristics
Tamb = +25 C and VDD = 1.65 V to 1.95 V, unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Temperature input
40
-
+125
C
0 C to +85 C
-
0.5
1
C
40 C to +125 C
-
1
2
C
temperature vs. supply
voltage
-
0.2
0.5
C/V
temperature resolution
-
0.0625
-
C
0.7  VDD -
1.95
V
temperature range
Tacc
Tres
temperature accuracy
Digital input/output
VIH
HIGH-level input voltage
VIL
LOW-level input voltage
0.5
-
0.3  VDD V
II
input current
VI = 0 V to 1.95 V
-
-
1
VOL
LOW-level output voltage
SDA pin; IOL = 3 mA
0
-
0.2  VDD V
ALERT pin; IOL = 3 mA
0
-
0.2  VDD V
tconv
resolution
-
12
-
bit
conversion time
-
26
35
ms
CR1 = 0; CR0 = 0
-
0.25
-
conv/s
CR1 = 0; CR0 = 1
-
1
-
conv/s
CR1 = 1; CR0 = 0 (default)
-
4
-
conv/s
CR1 = 1; CR0 = 1
-
8
-
conv/s
-
30
40
ms
conversion modes
tto
A
time-out time
Power supply
operating supply voltage
Iq
Isd
quiescent current
shutdown current
PCT2202
Product data sheet
+1.65
-
+1.95
V
serial bus inactive;
CR1 = 1, CR0 = 0 (default)
-
30
45
A
serial bus active; fSCL = 400 kHz
-
40
-
A
serial bus active; fSCL = 3.4 MHz
-
45
-
A
serial bus inactive
-
0.5
1
A
serial bus active; fSCL = 400 kHz
-
7
-
A
serial bus active; fSCL = 3.4 MHz
-
12
-
A
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
11. Typical characteristics
At Tamb = +25 C and VDD = 1.8 V, unless noted otherwise.
aaa-009200
60
aaa-009202
25
Isd
(μA)
IDD
(μA)
20
40
15
10
20
5
0
−60
20
100
0
−60
180
20
100
Tamb (°C)
Fig 8.
Supply current versus temperature
(bus inactive; 4 conversions per second)
aaa-009201
40
tconv
(ms)
38
180
Tamb (°C)
Fig 9.
Shutdown current versus temperature
(bus inactive)
aaa-009203
120
IDD
(μA)
3.4 MHz
80
32
1 MHz
28
40
400 kHz
24
20
−60
20
100
180
0
−60
20
100
Tamb (°C)
Fig 10. Conversion time versus temperature
aaa-011491
2.5
temperature
error (°C)
1.5
Fig 11. Supply current versus temperature
(per bus frequency; 4 conversions per second)
30
−0.5
20
−1.5
10
0
0
50
100
150
Tamb (°C)
Fig 12. Temperature error versus ambient temperature
PCT2202
Product data sheet
aaa-011492
50
population
(%)
40
0.5
−2.5
−50
180
Tamb (°C)
−1
−0.75
−0.5
−0.25
0
0.25
temperature error (°C)
Fig 13. Temperature error at 25 C
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12. Timing diagrams
The PCT2202 is two-wire and SMBus compatible. Figure 14 to Figure 17 describe the
various operations on the PCT2202. Parameters for Figure 14 are defined in Table 18.
Bus definitions are:
Bus idle — Both SDA and SCL lines remain HIGH.
Start data transfer — A change in the state of the SDA line from HIGH to LOW while the
SCL line is HIGH defines a START condition. Each data transfer is initiated with a START
condition.
Stop data transfer — A change in the state of the SDA line from LOW to HIGH while the
SCL line is HIGH defines a STOP condition. Each data transfer is terminated with a
repeated START or STOP condition.
Data transfer — The number of data bytes transferred between a START and a STOP
condition is not limited and is determined by the master device. It is also possible to use
the PCT2202 for single byte updates. To update only the most significant byte, terminate
the communication by issuing a START or STOP communication on the bus.
Acknowledge — Each receiving device, when addressed, is obliged to generate an
Acknowledge bit. A device that acknowledges must pull down the SDA line during the
Acknowledge clock pulse in such a way that the SDA line is stable LOW during the HIGH
period of the Acknowledge clock pulse. Set-up and hold times must be taken into account.
On a master receive, the termination of the data transfer can be signaled by the master
generating a Not-Acknowledge (‘1’) on the last byte that has been transmitted by the
slave.
Table 18.
Symbol
Timing characteristics
Parameter
Conditions
VDD = 1.8 V
Fast mode
High-speed mode Unit
Min
Max
Min
Max
0.001
0.4
0.001
3.4
fSCL
SCL clock frequency
MHz
tBUF
bus free time between a STOP and
START condition
600
-
160
-
ns
tHD;STA
hold time (repeated) START
condition
100
-
100
-
ns
tSU;STA
set-up time for a repeated START
condition
100
-
100
-
ns
tSU;STO
set-up time for STOP condition
100
-
100
-
ns
tHD;DAT
data hold time
0
-
0
-
ns
tSU;DAT
data set-up time
tLOW
LOW period of the SCL clock
tHIGH
100
-
10
-
ns
1300
-
160
-
ns
HIGH period of the SCL clock
600
-
60
-
ns
tf
fall time of both SDA and SCL
signals
-
300
-
-
ns
tr
rise time of both SDA and SCL
signals
-
300
-
160
ns
-
1000
-
-
ns
PCT2202
Product data sheet
VDD = 1.8 V
for SCL  100 kHz
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
tHIGH
tr
tf
0.7 × VDD
0.3 × VDD
SCL
tLOW
tHD;DAT
tHD;STA
SDA
tSU;STA
tSU;DAT
tSU;STO
tHD;STA
0.7 × VDD
0.3 × VDD
tBUF
P
S
S
P
002aag855
Fig 14. I2C-bus timing diagram
9
1
9
1
SCL
SDA
1
0
0
1
0
A1(1) A0(1) R/W
START
by master
0
0
0
0
0
0
P1
ACK by
PCT2202
P0
ACK by
PCT2202
Frame 1 I2C-bus slave address byte
Frame 2 Pointer register byte
1
9
1
9
SCL
(cont.)
SDA
(cont.)
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
ACK by
PCT2202
D1
D0
ACK by
PCT2202
STOP
by master
Frame 4 Data byte 2
Frame 3 Data byte 1
002aah466
(1) The value of A0 and A1 bits are determined by the A0 pin.
Fig 15. I2C-bus timing diagram for ‘write word’ format
PCT2202
Product data sheet
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
9
1
9
1
SCL
SDA
1
0
0
1
0
A1(1) A0(1) R/W
START
by master
0
0
0
0
0
0
P1
ACK by
PCT2202
P0
ACK by
PCT2202
Frame 1 I2C-bus slave address byte
STOP
by master
Frame 2 Pointer register byte
1
9
1
9
SCL
(cont.)
SDA
(cont.)
1
0
0
1
0
A1(1) A0(1)
D7
R/W
START
by master
D6
D5
D4
Frame 3 I2C-bus slave address byte
1
D3
D2
D1
D0
ACK by
master(2)
from
PCT2202
ACK by
PCT2202
Frame 4 Data byte 1 read register
9
SCL
(cont.)
SDA
(cont.)
D7
D6
D5
D4
D3
D2
D1
D0
ACK by
master(3)
from
PCT2202
STOP
by master
Frame 5 Data byte 2 read register
002aah467
(1) The value of A0 and A1 bits are determined by the A0 pin.
(2) Master should leave SDA HIGH to terminate a single-byte read operation.
(3) Master should leave SDA HIGH to terminate a two-byte read operation.
Fig 16. I2C-bus timing diagram for ‘read word’ format
ALERT
9
1
9
1
SCL
status
SDA
0
0
0
1
1
0
START
by master
0
R/W
1
0
0
1
ACK by
PCT2202
Frame 1 SMBus ALERT Response Address byte
A1
A0
(1)
(1)
from
PCT2202
NACK by
master
STOP by
master
Frame 2 slave address from PCT2202
002aah468
(1) The value of A0 and A1 bits are determined by the A0 pin.
Fig 17. Timing diagram for SMBus ALERT
PCT2202
Product data sheet
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13. Package outline
PCT2202
WLCSP6: wafer level chip-scale package; 6 bumps; 0.69 x 1.09 x 0.38 mm (Backside coating included)
B
A
D
ball A1
index area
A2
E
A
A1
detail X
e1
C
C A B
C
Øv
Øw
b
y
C
e
e2
B
A
ball A1
index area
1
2
X
0
1 mm
scale
Dimensions (mm are the original dimensions)
Unit
mm
A
A1
A2
b
max 0.41 0.125 0.287 0.22
nom 0.38 0.110 0.272 0.19
min 0.35 0.095 0.257 0.16
D
E
e
e1
e2
v
w
y
0.72
0.69
0.66
1.12
1.09
1.06
0.4
0.4
0.8
0.15
0.05
0.05
wlcsp6_pct2202_po
References
Outline
version
IEC
JEDEC
JEITA
PCT2202
---
---
---
European
projection
Issue date
13-10-07
14-11-19
Fig 18. Package outline PCT2202UK (WLCSP6)
PCT2202
Product data sheet
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
14. Soldering of WLCSP packages
14.1 Introduction to soldering WLCSP packages
This text provides a very brief insight into a complex technology. A more in-depth account
of soldering WLCSP (Wafer Level Chip-Size Packages) can be found in application note
AN10439 “Wafer Level Chip Scale Package” and in application note AN10365 “Surface
mount reflow soldering description”.
Wave soldering is not suitable for this package.
All NXP WLCSP packages are lead-free.
14.2 Board mounting
Board mounting of a WLCSP requires several steps:
1. Solder paste printing on the PCB
2. Component placement with a pick and place machine
3. The reflow soldering itself
14.3 Reflow soldering
Key characteristics in reflow soldering are:
• Lead-free versus SnPb soldering; note that a lead-free reflow process usually leads to
higher minimum peak temperatures (see Figure 19) than a SnPb process, thus
reducing the process window
• Solder paste printing issues, such as smearing, release, and adjusting the process
window for a mix of large and small components on one board
• Reflow temperature profile; this profile includes preheat, reflow (in which the board is
heated to the peak temperature), and cooling down. It is imperative that the peak
temperature is high enough for the solder to make reliable solder joints (a solder paste
characteristic) while being low enough that the packages and/or boards are not
damaged. The peak temperature of the package depends on package thickness and
volume and is classified in accordance with Table 19.
Table 19.
Lead-free process (from J-STD-020D)
Package thickness (mm)
Package reflow temperature (C)
Volume (mm3)
< 350
350 to 2000
> 2000
< 1.6
260
260
260
1.6 to 2.5
260
250
245
> 2.5
250
245
245
Moisture sensitivity precautions, as indicated on the packing, must be respected at all
times.
Studies have shown that small packages reach higher temperatures during reflow
soldering, see Figure 19.
PCT2202
Product data sheet
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
maximum peak temperature
= MSL limit, damage level
temperature
minimum peak temperature
= minimum soldering temperature
peak
temperature
time
001aac844
MSL: Moisture Sensitivity Level
Fig 19. Temperature profiles for large and small components
For further information on temperature profiles, refer to application note AN10365
“Surface mount reflow soldering description”.
14.3.1 Stand off
The stand off between the substrate and the chip is determined by:
• The amount of printed solder on the substrate
• The size of the solder land on the substrate
• The bump height on the chip
The higher the stand off, the better the stresses are released due to TEC (Thermal
Expansion Coefficient) differences between substrate and chip.
14.3.2 Quality of solder joint
A flip-chip joint is considered to be a good joint when the entire solder land has been
wetted by the solder from the bump. The surface of the joint should be smooth and the
shape symmetrical. The soldered joints on a chip should be uniform. Voids in the bumps
after reflow can occur during the reflow process in bumps with high ratio of bump diameter
to bump height, i.e. low bumps with large diameter. No failures have been found to be
related to these voids. Solder joint inspection after reflow can be done with X-ray to
monitor defects such as bridging, open circuits and voids.
14.3.3 Rework
In general, rework is not recommended. By rework we mean the process of removing the
chip from the substrate and replacing it with a new chip. If a chip is removed from the
substrate, most solder balls of the chip will be damaged. In that case it is recommended
not to re-use the chip again.
PCT2202
Product data sheet
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
Device removal can be done when the substrate is heated until it is certain that all solder
joints are molten. The chip can then be carefully removed from the substrate without
damaging the tracks and solder lands on the substrate. Removing the device must be
done using plastic tweezers, because metal tweezers can damage the silicon. The
surface of the substrate should be carefully cleaned and all solder and flux residues
and/or underfill removed. When a new chip is placed on the substrate, use the flux
process instead of solder on the solder lands. Apply flux on the bumps at the chip side as
well as on the solder pads on the substrate. Place and align the new chip while viewing
with a microscope. To reflow the solder, use the solder profile shown in application note
AN10365 “Surface mount reflow soldering description”.
14.3.4 Cleaning
Cleaning can be done after reflow soldering.
PCT2202
Product data sheet
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PCT2202
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
15. Soldering: PCB footprints
)RRWSULQWLQIRUPDWLRQIRUUHIORZVROGHULQJRI:/&63SDFNDJH
3&7
+[
3
3
+\
VHHGHWDLO;
UHFRPPHQGVWHQFLOWKLFNQHVVPP
VROGHUODQG6/
VROGHUSDVWHGHSRVLW63
VROGHUODQGSOXVVROGHUSDVWH
VROGHUUHVLVWRSHQLQJ65
6/
RFFXSLHGDUHD
63
65
'LPHQVLRQVLQPP
GHWDLO;
3
6/
63
65
+[
+\
,VVXHGDWH
ZOFVSBSFWBIU
Fig 20. PCB footprint for PCT2202 (WLCSP6); reflow soldering
PCT2202
Product data sheet
All information provided in this document is subject to legal disclaimers.
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
16. Abbreviations
Table 20.
PCT2202
Product data sheet
Abbreviations
Acronym
Description
CDM
Charged-Device Model
DP
Dry Pack
ESD
ElectroStatic Discharge
HBM
Human Body Model
I2C-bus
Inter-Integrated Circuit bus
LSB
Least Significant Bit
LSByte
Least Significant Byte
MSB
Most Significant Bit
MSByte
Most Significant Byte
SMBus
System Management Bus
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
17. Revision history
Table 21.
Revision history
Document ID
Release date
Data sheet status
Change notice
Supersedes
PCT2202 v.1.1
20150814
Product data sheet
-
PCT2202 v.1
Modifications:
PCT2202 v.1
PCT2202
Product data sheet
•
Added Section 15 “Soldering: PCB footprints”.
20141205
Product data sheet
-
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-
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Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
18. Legal information
18.1 Data sheet status
Document status[1][2]
Product status[3]
Definition
Objective [short] data sheet
Development
This document contains data from the objective specification for product development.
Preliminary [short] data sheet
Qualification
This document contains data from the preliminary specification.
Product [short] data sheet
Production
This document contains the product specification.
[1]
Please consult the most recently issued document before initiating or completing a design.
[2]
The term ‘short data sheet’ is explained in section “Definitions”.
[3]
The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nxp.com.
18.2 Definitions
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local NXP Semiconductors sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Product specification — The information and data provided in a Product
data sheet shall define the specification of the product as agreed between
NXP Semiconductors and its customer, unless NXP Semiconductors and
customer have explicitly agreed otherwise in writing. In no event however,
shall an agreement be valid in which the NXP Semiconductors product is
deemed to offer functions and qualities beyond those described in the
Product data sheet.
18.3 Disclaimers
Limited warranty and liability — Information in this document is believed to
be accurate and reliable. However, NXP Semiconductors does not give any
representations or warranties, expressed or implied, as to the accuracy or
completeness of such information and shall have no liability for the
consequences of use of such information. NXP Semiconductors takes no
responsibility for the content in this document if provided by an information
source outside of NXP Semiconductors.
In no event shall NXP Semiconductors be liable for any indirect, incidental,
punitive, special or consequential damages (including - without limitation - lost
profits, lost savings, business interruption, costs related to the removal or
replacement of any products or rework charges) whether or not such
damages are based on tort (including negligence), warranty, breach of
contract or any other legal theory.
Notwithstanding any damages that customer might incur for any reason
whatsoever, NXP Semiconductors’ aggregate and cumulative liability towards
customer for the products described herein shall be limited in accordance
with the Terms and conditions of commercial sale of NXP Semiconductors.
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
PCT2202
Product data sheet
Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in life support, life-critical or
safety-critical systems or equipment, nor in applications where failure or
malfunction of an NXP Semiconductors product can reasonably be expected
to result in personal injury, death or severe property or environmental
damage. NXP Semiconductors and its suppliers accept no liability for
inclusion and/or use of NXP Semiconductors products in such equipment or
applications and therefore such inclusion and/or use is at the customer’s own
risk.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Customers are responsible for the design and operation of their applications
and products using NXP Semiconductors products, and NXP Semiconductors
accepts no liability for any assistance with applications or customer product
design. It is customer’s sole responsibility to determine whether the NXP
Semiconductors product is suitable and fit for the customer’s applications and
products planned, as well as for the planned application and use of
customer’s third party customer(s). Customers should provide appropriate
design and operating safeguards to minimize the risks associated with their
applications and products.
NXP Semiconductors does not accept any liability related to any default,
damage, costs or problem which is based on any weakness or default in the
customer’s applications or products, or the application or use by customer’s
third party customer(s). Customer is responsible for doing all necessary
testing for the customer’s applications and products using NXP
Semiconductors products in order to avoid a default of the applications and
the products or of the application or use by customer’s third party
customer(s). NXP does not accept any liability in this respect.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) will cause permanent
damage to the device. Limiting values are stress ratings only and (proper)
operation of the device at these or any other conditions above those given in
the Recommended operating conditions section (if present) or the
Characteristics sections of this document is not warranted. Constant or
repeated exposure to limiting values will permanently and irreversibly affect
the quality and reliability of the device.
Terms and conditions of commercial sale — NXP Semiconductors
products are sold subject to the general terms and conditions of commercial
sale, as published at http://www.nxp.com/profile/terms, unless otherwise
agreed in a valid written individual agreement. In case an individual
agreement is concluded only the terms and conditions of the respective
agreement shall apply. NXP Semiconductors hereby expressly objects to
applying the customer’s general terms and conditions with regard to the
purchase of NXP Semiconductors products by customer.
No offer to sell or license — Nothing in this document may be interpreted or
construed as an offer to sell products that is open for acceptance or the grant,
conveyance or implication of any license under any copyrights, patents or
other industrial or intellectual property rights.
All information provided in this document is subject to legal disclaimers.
Rev. 1.1 — 14 August 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
28 of 30
PCT2202
NXP Semiconductors
Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
Export control — This document as well as the item(s) described herein
may be subject to export control regulations. Export might require a prior
authorization from competent authorities.
Non-automotive qualified products — Unless this data sheet expressly
states that this specific NXP Semiconductors product is automotive qualified,
the product is not suitable for automotive use. It is neither qualified nor tested
in accordance with automotive testing or application requirements. NXP
Semiconductors accepts no liability for inclusion and/or use of
non-automotive qualified products in automotive equipment or applications.
In the event that customer uses the product for design-in and use in
automotive applications to automotive specifications and standards, customer
(a) shall use the product without NXP Semiconductors’ warranty of the
product for such automotive applications, use and specifications, and (b)
whenever customer uses the product for automotive applications beyond
NXP Semiconductors’ specifications such use shall be solely at customer’s
own risk, and (c) customer fully indemnifies NXP Semiconductors for any
liability, damages or failed product claims resulting from customer design and
use of the product for automotive applications beyond NXP Semiconductors’
standard warranty and NXP Semiconductors’ product specifications.
Translations — A non-English (translated) version of a document is for
reference only. The English version shall prevail in case of any discrepancy
between the translated and English versions.
18.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
I2C-bus — logo is a trademark of NXP Semiconductors N.V.
19. Contact information
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
PCT2202
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 1.1 — 14 August 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
29 of 30
PCT2202
NXP Semiconductors
Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor
20. Contents
1
2
3
4
4.1
5
6
6.1
6.2
7
7.1
7.2
7.3
7.3.1
7.3.2
7.3.3
7.3.4
7.3.5
7.3.6
7.3.7
7.3.8
7.3.9
7.4
8
8.1
8.2
8.3
8.4
8.4.1
8.4.2
8.5
8.6
8.7
8.8
8.9
9
10
11
12
13
14
14.1
14.2
14.3
14.3.1
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features and benefits . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
Ordering options . . . . . . . . . . . . . . . . . . . . . . . . 2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pinning information . . . . . . . . . . . . . . . . . . . . . . 4
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
Functional description . . . . . . . . . . . . . . . . . . . 5
Pointer register . . . . . . . . . . . . . . . . . . . . . . . . . 5
Temperature register . . . . . . . . . . . . . . . . . . . . 6
Configuration register . . . . . . . . . . . . . . . . . . . . 8
EM - Extended mode bit . . . . . . . . . . . . . . . . . . 8
AL - ALERT bit . . . . . . . . . . . . . . . . . . . . . . . . . 8
CR1, CR0 - Conversion rate bits . . . . . . . . . . . 9
SD - Shut-down mode bit . . . . . . . . . . . . . . . . . 9
TM - Thermostat mode bit . . . . . . . . . . . . . . . . 9
POL - Polarity bit . . . . . . . . . . . . . . . . . . . . . . 10
F1, F0 - Fault queue bits. . . . . . . . . . . . . . . . . 10
R1, R0 - Converter resolution bits . . . . . . . . . 11
OS - One-shot/conversion ready . . . . . . . . . . 11
High-limit and low-limit registers . . . . . . . . . . . 11
Bus overview . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Serial interface . . . . . . . . . . . . . . . . . . . . . . . . 12
Serial bus address . . . . . . . . . . . . . . . . . . . . . 13
Write/read operation . . . . . . . . . . . . . . . . . . . . 13
Slave mode operations . . . . . . . . . . . . . . . . . . 13
Slave receiver mode . . . . . . . . . . . . . . . . . . . . 13
Slave transmitter mode. . . . . . . . . . . . . . . . . . 14
SMBus Alert function . . . . . . . . . . . . . . . . . . . 14
General Call - Software Reset . . . . . . . . . . . . 14
High-speed (Hs) mode . . . . . . . . . . . . . . . . . . 14
Time-out function . . . . . . . . . . . . . . . . . . . . . . 15
Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 15
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 16
Typical characteristics . . . . . . . . . . . . . . . . . . 17
Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . 18
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 21
Soldering of WLCSP packages. . . . . . . . . . . . 22
Introduction to soldering WLCSP packages . . 22
Board mounting . . . . . . . . . . . . . . . . . . . . . . . 22
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 22
Stand off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
14.3.2
Quality of solder joint . . . . . . . . . . . . . . . . . . .
14.3.3
Rework. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14.3.4
Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
Soldering: PCB footprints . . . . . . . . . . . . . . .
16
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . .
17
Revision history . . . . . . . . . . . . . . . . . . . . . . .
18
Legal information . . . . . . . . . . . . . . . . . . . . . .
18.1
Data sheet status . . . . . . . . . . . . . . . . . . . . . .
18.2
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . .
18.3
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . .
18.4
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . .
19
Contact information . . . . . . . . . . . . . . . . . . . .
20
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23
23
24
25
26
27
28
28
28
28
29
29
30
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP Semiconductors N.V. 2015.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [email protected]
Date of release: 14 August 2015
Document identifier: PCT2202
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