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 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. 2 of 30 PCT2202 NXP Semiconductors 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 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. 3 of 30 PCT2202 NXP Semiconductors 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. 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. 4 of 30 PCT2202 NXP Semiconductors 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 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. 5 of 30 PCT2202 NXP Semiconductors 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 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. 6 of 30 PCT2202 NXP Semiconductors 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 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. 7 of 30 PCT2202 NXP Semiconductors 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’. 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. 8 of 30 PCT2202 NXP Semiconductors Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor 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 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. 9 of 30 PCT2202 NXP Semiconductors Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor 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 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. 10 of 30 PCT2202 NXP Semiconductors Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor 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. 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. 11 of 30 PCT2202 NXP Semiconductors Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor 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. 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. 12 of 30 PCT2202 NXP Semiconductors Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor 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 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. 13 of 30 PCT2202 NXP Semiconductors Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor 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 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. 14 of 30 PCT2202 NXP Semiconductors 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. 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. 15 of 30 PCT2202 NXP Semiconductors 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 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. 16 of 30 PCT2202 NXP Semiconductors 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 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. 17 of 30 PCT2202 NXP Semiconductors Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor 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 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. 18 of 30 PCT2202 NXP Semiconductors 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 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. 19 of 30 PCT2202 NXP Semiconductors 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 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. 20 of 30 PCT2202 NXP Semiconductors Ultra low power, 1.8 V, 1 deg. C accuracy, I2C-bus digital temp sensor 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 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. 21 of 30 PCT2202 NXP Semiconductors 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 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. 22 of 30 PCT2202 NXP Semiconductors 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 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. 23 of 30 PCT2202 NXP Semiconductors 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 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. 24 of 30 PCT2202 NXP Semiconductors 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. Rev. 1.1 — 14 August 2015 © NXP Semiconductors N.V. 2015. All rights reserved. 25 of 30 PCT2202 NXP Semiconductors 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 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. 26 of 30 PCT2202 NXP Semiconductors 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 - 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. 27 of 30 PCT2202 NXP Semiconductors 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