INTEGRATED CIRCUITS PCA9539 16-bit I2C and SMBus, low power I/O port with interrupt and reset Product data sheet Supersedes data of 2004 Aug 27 Philips Semiconductors 2004 Sep 30 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt and reset PCA9539 DESCRIPTION The PCA9539 is a 24-pin CMOS device that provide 16 bits of General Purpose parallel Input/Output (GPIO) expansion with interrupt and reset for I2C/SMBus applications and was developed to enhance the Philips family of I2C I/O expanders. I/O expanders provides a simple solution when additional I/O is needed for ACPI power switches, sensors, pushbuttons, LEDs, fans, etc. The PCA9539 consists of two 8-bit Configuration (Input or Output selection); Input, Output and Polarity inversion (Active HIGH or Active LOW operation) registers. The system master can enable the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for each Input or Output is kept in the corresponding Input or Output register. The polarity of the read register can be inverted with the Polarity Inversion Register. All registers can be read by the system master. FEATURES • 16-bit I2C GPIO with interrupt and reset • Operating power supply voltage range of 2.3 V–5.5 V • 5 V tolerant I/Os • Polarity inversion register • Active LOW interrupt output • Active LOW reset input • Low stand-by current • Noise filter on SCL/SDA inputs • No glitch on power-up • Internal power-on reset • 16 I/O pins which default to 16 inputs • 0 kHz to 400 kHz clock frequency • ESD protection exceeds 2000 V HBM per JESD22-A114, The PCA9539 is identical to the PCA9555 except for the removal of the internal I/O pull-up resistor which greatly reduces power consumption when the I/Os are held LOW, repleacement of A2 with RESET and different address range. The PCA9539 open-drain interrupt output is activated when any input state differs from its corresponding input port register state and is used to indicate to the system master that an input state has changed. The power-on reset sets the registers to their default values and initializes the device state machine. The RESET pin causes the same reset/sonfiguration to occur without depowering the device. Two hardware pins (A0, A1) vary the fixed I2C address and allow up to four devices to share the same I2C/SMBus. 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101 • Latch-up testing is done to JESDEC Standard JESD78 which exceeds 100 mA • Offered in three different packages: SO24, TSSOP24, and HVQFN24 ORDERING INFORMATION PACKAGES TEMPERATURE RANGE ORDER CODE TOPSIDE MARK DRAWING NUMBER 24-Pin Plastic SO –40 °C to +85 °C PCA9539D PCA9539D SOT137-1 24-Pin Plastic TSSOP –40 °C to +85 °C PCA9539PW PCA9539PW SOT355-1 24-Pin Plastic HVQFN –40 °C to +85 °C PCA9539BS 9539 SOT616-1 Standard packing quantities and other packing data are available at www.standardproducts.philips.com/packaging. I2C is a trademark of Philips Semiconductors Corporation. SMBus as specified by the Smart Battery System Implementers Forum is a derivative of the Philips I2C patent. 2004 Sep 30 2 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt and reset 20 I/O1.7 I/O0.2 6 19 I/O1.6 8 17 I/O1.4 I/O0.5 9 16 I/O1.3 2 17 I/O1.7 I/O0.2 3 16 I/O1.6 I/O0.3 4 15 I/O1.5 I/O0.4 5 14 I/O1.4 I/O0.5 6 13 I/O1.3 I/O0.6 10 15 I/O1.2 8 I/O0.4 I/O0.1 I/O0.7 11 14 I/O1.1 I/O0.7 18 I/O1.5 18 A0 7 7 1 I/O0.6 I/O0.3 20 SDA 5 19 SCL I/O0.1 I/O0.0 VSS 12 13 I/O1.0 I/O1.2 12 21 A0 I/O1.1 11 4 21 VDD 22 SCL I/O0.0 I/O1.0 10 3 22 INT 23 SDA RESET 23 A1 2 9 24 VDD A1 VSS INT 1 PIN CONFIGURATION —HVQFN 24 RESET PIN CONFIGURATION — SO, TSSOP PCA9539 TOP VIEW SW02200 Figure 1. Pin configuration — SO, TSSOP Figure 2. Pin configuration — HVQFN PIN DESCRIPTION SO, TSSOP PIN NUMBER HVQFN PIN NUMBER SYMBOL 1 22 INT Interrupt output (open drain) 2 23 A1 Address input 1 3 24 RESET 4–11 1–8 I/O0.0–I/O0.7 I/O0.0 to I/O0.7 12 9 VSS Supply ground 13–20 10–17 I/O1.0–I/O1.7 I/O1.0 to I/O1.7 21 18 A0 Address input 0 22 19 SCL Serial clock line 23 20 SDA Serial data line 24 21 VDD Supply voltage 2004 Sep 30 3 FUNCTION Active LOW reset input SW02201 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt and reset PCA9539 BLOCK DIAGRAM PCA9539 I/O1.0 I/O1.1 I/O1.2 A0 A1 8-BIT INPUT/ OUTPUT PORTS I/O1.3 I/O1.4 I/O1.5 WRITE pulse I/O1.6 READ pulse I/O1.7 I2C/SMBUS CONTROL I/O0.0 I/O0.1 SCL SDA I/O0.2 INPUT FILTER 8-BIT INPUT/ OUTPUT PORTS I/O0.3 I/O0.4 WRITE pulse I/O0.5 READ pulse I/O0.6 I/O0.7 VDD VCC RESET POWER-ON RESET INT VSS LP FILTER NOTE: ALL I/Os ARE SET TO INPUTS AT RESET SW02202 Figure 3. Block diagram 2004 Sep 30 4 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt and reset PCA9539 SIMPLIFIED SCHEMATIC OF I/Os DATA FROM SHIFT REGISTER OUTPUT PORT REGISTER DATA CONFIGURATION REGISTER DATA FROM SHIFT REGISTER VDD Q D Q1 ESD PROTECTION DIODE FF WRITE CONFIGURATION PULSE CK Q D Q FF I/O PIN WRITE PULSE CK Q Q2 OUTPUT PORT REGISTER INPUT PORT REGISTER D Q ESD PROTECTION DIODE VSS INPUT PORT REGISTER DATA FF READ PULSE Q CK DATA FROM SHIFT REGISTER TO INT D Q POLARITY REGISTER DATA FF WRITE POLARITY PULSE CK Q POLARITY INVERSION REGISTER SU02203 NOTE: At Power-on Reset, all registers return to default values. Figure 4. Simplified schematic of I/Os I/O port When an I/O is configured as an input, FETs Q1 and Q2 are off, creating a high impedance input. The input voltage may be raised above VDD to a maximum of 5.5 V. If the I/O is configured as an output, then either Q1 or Q2 is on, depending on the state of the Output Port register. Care should be exercised if an external voltage is applied to an I/O configured as an output because of the low impedance path that exists between the pin and either VDD or VSS. 2004 Sep 30 5 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt and reset REGISTERS Command Byte Command bit C1.7 C1.6 C1.5 C1.4 C1.3 C1.2 C1.1 C1.0 default 1 1 1 1 1 1 1 1 This register configures the directions of the I/O pins. If a bit in this register is set (written with ‘1’), the corresponding port pin is enabled as an input with high impedance output driver. If a bit in this register is cleared (written with ‘0’), the corresponding port pin is enabled as an output. At reset the device’s ports are inputs. Register 0 Input port 0 1 Input port 1 2 Output port 0 3 Output port 1 4 Polarity inversion port 0 POWER-ON RESET 5 Polarity inversion port 1 6 Configuration port 0 7 Configuration port 1 When power is applied to VDD, an internal power-on reset holds the PCA9539 in a reset condition until VDD has reached VPOR. At that point, the reset condition is released and the PCA9539 registers and SMBus state machine will initialize to their default states. Therefore, VDD must be lowered below 0.2 V to reset the device. The command byte is the first byte to follow the address byte during a write transmission. It is used as a pointer to determine which of the following registers will be written or read. For a power reset cycle, VDD must be lowered below 0.2 V and then restored to the operating voltage. RESET Input Registers 0 and 1 — Input Port Registers bit PCA9539 I0.7 I0.6 I0.5 I0.4 I0.3 I0.2 I0.1 A reset can be accomplished by holding the RESET pin LOW for a minimum of tW. The PCA9539 registers and SMBus/I2C state machine will be held in their default state until the RESET input is once again HIGH. This input typically requires a pull-up to VDD. IO.0 default X X X X X X X X bit I1.7 I1.6 I1.5 I1.4 I1.3 I1.2 I1.1 I1.0 default X X X X X X X X DEVICE ADDRESS This register is an input-only port. It reflects the incoming logic levels of the pins, regardless of whether the pin is defined as an input or an output by Register 3. Writes to this register have no effect. slave address 1 The default value ‘X’ is determined by the externally applied logic level. 1 1 fixed Registers 2 and 3 — Output Port Registers 1 A1 A0 R/W programmable SW02204 bit O0.7 O0.6 O0.5 O0.4 O0.3 O0.2 O0.1 O0.0 default 1 1 1 1 1 1 1 1 bit O1.7 O1.6 O1.5 O1.4 O1.3 O1.2 O1.1 O1.0 default 1 1 1 1 1 1 1 1 Figure 5. PCA9539 address This register is an output-only port. It reflects the outgoing logic levels of the pins defined as outputs by Register 6 and 7. Bit values in this register have no effect on pins defined as inputs. In turn, reads from this register reflect the value that is in the flip-flop controlling the output selection, NOT the actual pin value. Registers 4 and 5 — Polarity Inversion Registers bit N0.7 N0.6 N0.5 N0.4 N0.3 N0.2 N0.1 N0.0 default 0 0 0 0 0 0 0 0 bit N1.7 N1.6 N1.5 N1.4 N1.3 N1.2 N1.1 N1.0 default 0 0 0 0 0 0 0 0 This register allows the user to invert the polarity of the Input Port register data. If a bit in this register is set (written with ‘1’), the Input Port data polarity is inverted. If a bit in this register is cleared (written with a ‘0’), the Input Port data polarity is retained. Registers 6 and 7 — Configuration Registers bit C0.7 C0.6 C0.5 C0.4 C0.3 C0.2 C0.1 C0.0 default 1 1 1 1 1 1 1 1 2004 Sep 30 0 6 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt and reset After a restart, the device address is sent again but this time, the least significant bit is set to a logic 1. Data from the register defined by the command byte will then be sent by the PCA9539 (see Figures 8 , 9, and 10). Data is clocked into the register on the falling edge of the acknowledge clock pulse. After the first byte is read, additional bytes may be read but the data will now reflect the information in the other register in the pair. For example, if you read Input Port 1, then the next byte read would be Input Port 0. There is no limitation on the number of data bytes received in one read transmission but the final byte received, the bus master must not acknowledge the data. BUS TRANSACTIONS Writing to the port registers Data is transmitted to the PCA9539 by sending the device address and setting the least significant bit to a logic 0 (see Figure 5 for device address). The command byte is sent after the address and determines which register will receive the data following the command byte. The eight registers within the PCA9539 are configured to operate as four register pairs. The four pairs are Input Ports, Output Ports, Polarity Inversion Ports, and Configuration Ports. After sending data to one register, the next data byte will be sent to the other register in the pair (see Figures 6 and 7). For example, if the first byte is sent to Output Port (register 3), then the next byte will be stored in Output Port 0 (register 2). There is no limitation on the number of data bytes sent in one write transmission. In this way, each 8-bit register may be updated independently of the other registers. Interrupt Output The open-drain interrupt output is activated when one of the port pins change state and the pin is configured as an input. The interrupt is deactivated when the input returns to its previous state or the input port register is read (see Figure 9). A pin configured as an output cannot cause an interrupt. Since each 8-bit port is read independently, the interrupt caused by Port 0 will not be cleared by a read of Port 1 or the other way around. Reading the port registers In order to read data from the PCA9539, the bus master must first send the PCA9539 address with the least significant bit set to a logic 0 (see Figure 5 for device address). The command byte is sent after the address and determines which register will be accessed. 2004 Sep 30 PCA9539 Note that changing an I/O from an output to an input may cause a false interrupt to occur if the state of the pin does not match the contents of the Input Port register. 7 2004 Sep 30 8 SDA SCL DATA OUT FROM PORT 1 DATA OUT FROM PORT 0 WRITE TO PORT SDA SCL 1 1 2 1 1 2 start condition S 1 start condition S 1 4 5 6 4 0 5 1 1 0 1 7 6 A1 A0 7 A1 A0 slave address 3 1 slave address 3 R/W 0 8 R/W 0 8 0 0 0 1 0 2 0 0 0 1 0 0.7 acknowledge from slave A DATA 0 4 5 6 0 0 0 1 command byte 3 1 7 0 8 1 2 acknowledge from slave A MSB 9 3 5 DATA 0 data to register 4 6 data to port 0 Figure 7. WRITE to configuration registers acknowledge from slave A 9 0 command byte Figure 6. WRITE to output port registers acknowledge from slave A 9 7 LSB 8 tpv 0.0 1 2 acknowledge from slave A MSB 9 acknowledge from slave A 1.7 3 5 DATA 1 1.0 P A P SW02205 A SU02206 LSB tpv DATA VALID data to register 4 DATA 1 data to port 1 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt and reset PCA9539 S 1 1 0 1 1 A1 A0 0 COMMAND BYTE A A slave address 1 S 1 1 0 1 data from lower or upper byte of register acknowledge from slave A1 A0 R/W 1 acknowledge from master DATA A MSB LSB A first byte R/W at this moment master-transmitter becomes master-receiver and slave-receiver becomes slave-transmitter data from upper or lower byte of register MSB no acknowledge from master LSB NA DATA P last byte SW02207 NOTE: Transfer can be stopped at any time by a STOP condition. Figure 8. READ from register SCL 1 2 3 4 5 6 7 8 9 9 I0.x SDA S 1 1 1 0 1 A1 A0 1 R/W A 7 6 5 4 ACKNOWLEDGE FROM SLAVE 3 I1.x 2 1 0 A 7 6 5 ACKNOWLEDGE FROM MASTER 4 3 I0.x 2 1 0 A 7 6 5 ACKNOWLEDGE FROM MASTER 4 3 I1.x 2 1 0 A 7 6 5 4 3 2 1 0 1 Philips Semiconductors slave address acknowledge from slave 16-bit I2C and SMBus, low power I/O port with interrupt and reset 2004 Sep 30 acknowledge from slave P ACKNOWLEDGE FROM MASTER NON ACKNOWLEDGE FROM MASTER READ FROM PORT 0 DATA INTO PORT 0 READ FROM PORT 1 DATA INTO PORT 1 INT tIR Product data sheet SW02208 NOTES: Transfer of data can be stopped at any moment by a STOP condition. When this occurs, data present at the latest acknowledge phase is valid (output mode). It is assumed that the command byte has previously been set to 00 (read input port port register). Figure 9. READ input port register — scenario 1 PCA9539 tIV 2 3 4 5 6 7 8 9 I0.x SDA S 1 1 1 0 1 A1 A0 1 R/W A DATA 00 ACKNOWLEDGE FROM SLAVE I1.x A DATA 10 ACKNOWLEDGE FROM MASTER I0.x A DATA 03 ACKNOWLEDGE FROM MASTER I1.x A P ACKNOWLEDGE FROM MASTER tps tph 1 DATA 12 NON ACKNOWLEDGE FROM MASTER READ FROM PORT 0 DATA 00 DATA INTO PORT 0 DATA 01 DATA 02 tph DATA 03 tps READ FROM PORT 1 DATA 10 DATA INTO PORT 1 DATA 11 DATA 12 INT tIV tIR SW02209 10 NOTES: Transfer of data can be stopped at any moment by a STOP condition. When this occurs, data present at the latest acknowledge phase is valid (output mode). It is assumed that the command byte has previously been set to 00 (read input port port register). Figure 10. READ input port register — scenario 2 Philips Semiconductors 1 16-bit I2C and SMBus, low power I/O port with interrupt and reset 2004 Sep 30 SCL Product data sheet PCA9539 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt PCA9539 TYPICAL APPLICATION VDD (5 V) 100 kΩ (×3) 2 kΩ VDD 10 kΩ 10 kΩ 10 kΩ 10 kΩ SUBSYSTEM 1 (e.g. temp sensor) INT VDD MASTER CONTROLLER SCL SCL SDA SDA INT INT SUBSYSTEM 2 (e.g. counter) RESET I/O0.0 A I/O0.1 I/O0.2 RESET I/O0.3 RESET GND ENABLE I/O0.4 ALARM I/O0.5 SUBSYSTEM 3 (e.g. alarm system) B PCA9539 VDD Controlled Switch (e.g. CBT device) I/O0.6 I/O0.7 I/O1.0 I/O1.1 A1 10 DIGIT NUMERIC KEYPAD I/O1.2 I/O1.3 A0 I/O1.4 I/O1.5 I/O1.6 VSS I/O1.7 NOTE: Device address configured as 1110100 for this example I/O0.0, I/O0.2, I/O0.3, configured as outputs I/O0.1, I/O0.4, I/O0.5, configured as inputs I/O0.6, I/O0.7, and I/O1.0 to I/O1.7 configured as inputs SW02094 Figure 11. Typical application Minimizing IDD when the I/O is used to control LEDs When the I/Os are used to control LEDs, they are normally connected to VDD through a resistor as shown in Figure 11. Since the LED acts as a diode, when the LED is off the I/O VIN is about 1.2 V less than VDD. The supply current, IDD, increases as VIN becomes lower than VDD and is specified as ∆IDD in the DC characteristics table. Designs needing to minimize current consumption, such as battery power applications, should consider maintaining the I/O pins greater than or equal to VDD when the LED is off. Figure 12 shows a high value resistor in parallel with the LED. Figure 13 shows VDD less than the LED supply voltage by at least 1.2 V. Both of these methods maintain the I/O VIN at or above VDD and prevents additional supply current consumption when the LED is off. 3.3 V VDD LED 100 kΩ VDD VDD LEDx LED LEDx SW02086 SW02087 Figure 12. High value resistor in parallel with the LED 2004 Sep 30 5V Figure 13. Device supplied by a lower voltage 11 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt PCA9539 ABSOLUTE MAXIMUM RATINGS In accordance with the Absolute Maximum Rating System (IEC 134) PARAMETER SYMBOL CONDITIONS MIN MAX UNIT –0.5 6.0 V VDD Supply voltage VI/O DC input current on an I/O VSS – 0.5 6 V II/O DC output current on an I/O — ± 50 mA DC input current — ± 20 mA IDD Supply current — 160 mA II ISS Supply current — 200 mA Ptot Total power dissipation — 200 mW Tstg Storage temperature range –65 +150 °C Tamb Operating ambient temperature –40 +85 °C TJ(MAX) Maximum junction temperature — +125 °C 2004 Sep 30 12 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt PCA9539 HANDLING Inputs and outputs are protected against electrostatic discharge in normal handling. However, to be totally safe, it is desirable to take precautions appropriate to handling MOS devices. Advice can be found in Data Handbook IC24 under “Handling MOS devices”. DC CHARACTERISTICS VDD = 2.3 V to 5.5 V; VSS = 0 V; Tamb = –40 °C to +85 °C; unless otherwise specified. PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNIT Supplies VDD Supply voltage 2.3 — 5.5 V — 135 200 µA IDD Supply current Operating mode; VDD = 5.5 V; no load; fSCL = 100 kHz; I/O = inputs Istbl Standby current Standby mode; VDD = 5.5 V; no load; VI = VSS; fSCL = 0 kHz; I/O = inputs — 0.25 1 µA Istbh Standby current Standby mode; VDD = 5.5 V; no load; VI = VDD; fSCL = 0 kHz; I/O = inputs — 0.25 1 µA Power-on reset voltage (Note 1) No load; VI = VDD or VSS — 1.5 1.65 V –0.5 — 0.3VDD V VPOR input SCL; input/output SDA VIL LOW-level input voltage VIH HIGH-level input voltage 0.7VDD — 5.5 V IOL LOW-level output current VOL = 0.4 V 3 tbd — mA IL Leakage current VI = VDD = VSS –1 — +1 µA CI Input capacitance VI = VSS — 6 10 pF I/Os VIL LOW-level input voltage –0.5 — 0.3VDD V VIH HIGH-level input voltage 0.7VDD — 5.5 V IOL O LOW level output current LOW-level VOH O HIGH level output voltage HIGH-level VOL = 0.5 V; VDD = 2.3 V to 5.5 V; Note 2 8 8–20 — mA VOL = 0.7 V; VDD = 2.3 V to 5.5 V; Note 2 10 10–24 — mA IOH = –8 mA; VDD = 2.3 V; Note 3 1.8 — — V IOH = –10 mA; VDD = 2.3 V; Note 3 1.7 — — V IOH = –8 mA; VDD = 3.0 V; Note 3 2.6 — — V IOH = –10 mA; VDD = 3.0 V; Note 3 2.5 — — V IOH = –8 mA; VDD = 4.75 V; Note 3 4.1 — — V IOH = –10 mA; VDD = 4.75 V; Note 3 4.0 — — V IIH Input leakage current VDD = 5.5 V; VI = VDD — — 1 µA IIL Input leakage current VDD = 5.5 V; VI = VSS — — –1 µA CI Input capacitance — 3.7 5 pF CO Output capacitance — 3.7 5 pF 3 tbd — mA V Interrupt INT IOL LOW-level output current VOL = 0.4 V Select Inputs A0, A1, and RESET VIL LOW-level input voltage –0.5 — 0.3VDD VIH HIGH-level input voltage 0.7VDD — 5.5 V ILI Input leakage current –1 — 1 µA NOTES: 1. VDD must be lowered to 0.2 V in order to reset part. 2. Each I/O must be externally limited to a maximum of 25 mA and each octal (I/O0.0 to I/O0.7, and I/O1.0 to I/O1.7) must be limited to a maximum current of 100 mA for a device total of 200 mA. 3. The total current sourced by all I/Os must be limited to 160 mA (80 mA for I/O 0.0 through 0.7 and 80 mA for I/O 1.0 through 1.7). 2004 Sep 30 13 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt PCA9539 AC CHARACTERISTICS SYMBOL STANDARD MODE I2C-bus PARAMETER MIN MAX FAST MODE I2C-bus UNITS MIN MAX fSCL Operating frequency 0 100 0 400 kHz tBUF Bus free time between STOP and START conditions 4.7 — 1.3 — µs tHD;STA Hold time after (repeated) START condition 4.0 — 0.6 — µs tSU;STA Repeated START condition setup time 4.7 — 0.6 — µs tSU;STO Set-up time for STOP condition 4.0 — 0.6 — µs tVD;ACK Valid time of ACK condition2 0.3 3.45 0.1 0.9 µs tHD;DAT Data in hold time 0 — 0 — ns tVD;DAT Data out valid time3 300 — 50 — ns tSU;DAT Data set-up time 250 — 100 — ns tLOW Clock LOW period 4.7 — 1.3 — µs tHIGH Clock HIGH period 4.0 — 0.6 — µs tF Clock/Data fall time — 300 20 + 0.1Cb 1 300 ns tR Clock/Data rise time — 1000 20 + 0.1Cb 1 300 ns tSP Pulse width of spikes that must be suppressed by the input filters — 50 — 50 ns Port Timing tPV Output data valid tPS Input data set-up time tPH Input data hold time — 200 — 200 ns 150 — 150 — ns 1 — 1 — µs Interrupt Timing tIV Interrupt valid — 4 — 4 µs tIR Interrupt reset — 4 — 4 µs Reset pulse width 4 — 4 — ns Reset recovery time 0 — 0 — ns 400 — 400 — ns RESET tW tREC tRESET5,6 Time to reset NOTES: 1. Cb = total capacitance of one bus line in pF. 2. tVD;ACK = time for Acknowledgement signal from SCL LOW to SDA (out) LOW. 3. tVD;DAT = minimum time for SDA data out to be valid following SCL LOW. 4. tPV measured from 0.7VDD on SCL to 50% I/O output. 5. Resetting the device while actively communicating on the bus may cause glitches or errant STOP conditions. 6. Upon reset, the full delay will be the sum of tRESET and the RC time constant of the SDA bus. SDA tLOW tF tR tSU;DAT tF tHD;STA tSP tR tBUF SCL S tHD;STA tHD;DAT tHIGH tSU;STA SR tSU;STD P S SU01469 Figure 14. Definition of timing 2004 Sep 30 14 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt START PCA9539 ACK OR READ CYCLE SCL SDA 30% tRESET RESET 50% 50% 50% tREC tW tRESET 50% I/Ox I/O configured as inputs SW02340 Figure 15. Definition of RESET timing 70 % SCL 2 1 0 A P 30 % SDA tPS tPH INPUT 50 % tIV tIR INT SW02329 Figure 16. Expanded view of Read input port register 70 % SCL 2 1 0 A P 30 % SDA tPV OUTPUT 50 % SW02330 Figure 17. Expanded view of Write to output port register 2004 Sep 30 15 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt BIT 7 MSB (A7) START CONDITION (S) PROTOCOL t t SU;STA BIT 6 (A6) t HIGH LOW BIT 0 (R/W) PCA9539 STOP CONDITION (S) ACKNOWLEDGE (A) 1 / f SCL SCL t t f tr BUF SDA t t HD;STA t SU;DAT t HD;DAT tSU;STO VD;DAT t VD;ACK Figure 18. I2C-bus timing diagram; rise and fall times refer to VIL and VIH TEST CIRCUITS VDD VDD Open RL = 500 Ω VI VO PULSE GENERATOR D.U.T. RT CL 50 pF DEFINITIONS RL = Load resistor. CL = Load capacitance includes jig and probe capacitance RT = Termination resistance should be equal to the output impedance ZO of the pulse generators. SW02181 Figure 19. Test circuitry for switching times 2VDD 500 Ω From Output Under Test S1 Open GND 500 Ω CL = 50 pF Load Circuit TEST S1 tpv 2 VDD SA00652 Figure 20. Test circuit 2004 Sep 30 16 SW02210 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt SO24: plastic small outline package; 24 leads; body width 7.5 mm 2004 Sep 30 17 PCA9539 SOT137-1 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt TSSOP24: plastic thin shrink small outline package; 24 leads; body width 4.4 mm 2004 Sep 30 18 PCA9539 SOT355-1 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt HVQFN24: plastic thermal enhanced very thin quad flat package; no leads; 24 terminals; body 4 x 4 x 0.85 mm 2004 Sep 30 19 PCA9539 SOT616-1 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt REVISION HISTORY Rev Date Description _2 20040930 Product data sheet (9397 750 14048). Supersedes data of 2004 Aug 27 (9397 750 12898). Modifications: • Section “Registers 0 and 1—Input Port Registers” on page 6: – add table and second paragraph • Figure 11 on page 11: resistor values modified • “DC Characteristics” table on page 13: – sub-section “I/Os”: change VIL (max) from 0.8 V to 0.3VDD change VIH (min) from 2.0 V to 0.7VDD – sub-section “Select inputs A0, A1, and RESET: change VIL (max) from 0.8 V to 0.3VDD change VIH (min) from 2.0 V to 0.7VDD • Figure 15 on page 15 modified. _1 2004 Sep 30 20040827 Product data sheet (9397 750 12898). 20 PCA9539 Philips Semiconductors Product data sheet 16-bit I2C and SMBus, low power I/O port with interrupt PCA9539 Purchase of Philips I2C components conveys a license under the Philips’ I2C patent to use the components in the I2C system provided the system conforms to the I2C specifications defined by Philips. This specification can be ordered using the code 9398 393 40011. Data sheet status Level Data sheet status [1] Product status [2] [3] Definitions I Objective data sheet Development This data sheet contains data from the objective specification for product development. Philips Semiconductors reserves the right to change the specification in any manner without notice. II Preliminary data sheet Qualification This data sheet contains data from the preliminary specification. Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the specification without notice, in order to improve the design and supply the best possible product. III Product data sheet Production This data sheet contains data from the product specification. Philips Semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. Relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN). [1] Please consult the most recently issued data sheet before initiating or completing a design. [2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com. [3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status. Definitions Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition — Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information — Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Disclaimers Life support — These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes — Philips Semiconductors reserves the right to make changes in the products—including circuits, standard cells, and/or software—described or contained herein in order to improve design and/or performance. When the product is in full production (status ‘Production’), relevant changes will be communicated via a Customer Product/Process Change Notification (CPCN). Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no license or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified. Koninklijke Philips Electronics N.V. 2004 All rights reserved. Printed in U.S.A. Contact information For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825 Date of release: 09-04 For sales offices addresses send e-mail to: [email protected]. Document order number: Philips Semiconductors 2004 Sep 30 21 9397 750 14048