INTEGRATED CIRCUITS DATA SHEET PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers Product specification Supersedes data of 1995 Jul 14 File under Integrated Circuits, IC14 1996 Nov 20 Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers CONTENTS 1 FEATURES 2 GENERAL DESCRIPTION 3 ORDERING INFORMATION 4 BLOCK DIAGRAM 5 PINNING INFORMATION 5.1 5.2 Pinning Pin description 6 INSTRUCTION SET 7 HIGH SINK OUTPUT CURRENTS 8 ROM MASK OPTIONS 9 HANDLING 10 LIMITING VALUES 11 DC CHARACTERISTICS 12 AC CHARACTERISTICS 13 PACKAGE OUTLINES 14 SOLDERING 14.1 14.2 14.2.1 14.2.2 14.3 14.3.1 14.3.2 14.3.3 Introduction DIP Soldering by dipping or by wave Repairing soldered joints SO Reflow soldering Wave soldering Repairing soldered joints 15 DEFINITIONS 16 LIFE SUPPORT APPLICATIONS 17 PURCHASE OF PHILIPS I2C COMPONENTS 1996 Nov 20 2 Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers 1 2 FEATURES • Manufactured in silicon gate CMOS process GENERAL DESCRIPTION This data sheet details the specific properties of the PCF84C21A, PCF84C41A and PCF84C81A. The shared properties of the PCF84CxxxA family of microcontrollers are described in the “PCF84CxxxA family” data sheet which should be read in conjunction with this publication. • 8-bit CPU, ROM, RAM, I/O in a 28-lead package • 2 kbyte ROM, 64 byte RAM (PCF84C21A) • 4 kbyte ROM, 128 byte RAM (PCF84C41A) • 8 kbyte ROM, 256 byte RAM (PCF84C81A) The PCF84C21A, PCF84C41A and PCF84C81A are general purpose CMOS microcontrollers with 2 kbytes, 4 kbytes and 8 kbytes of program memory and 64,128 and 256 bytes of RAM, respectively. In addition to 20 I/O port lines, the microcontrollers provide an on-chip I2C-bus interface. This two-line serial bus extends the microcontroller capabilities when implemented with the powerful I2C-bus peripherals. These include LCD drivers, I/O expanders, telecom circuits, ADC and DAC converters, clock/calendar circuits, EEPROM and RAM and are listed in “Data Handbook IC12, I2C Peripherals”. • I2C-bus interface with multi-master capability • Over 100 instructions (based on MAB8048) all of 1 or 2 cycles • 20 quasi-bidirectional I/O Port lines • High sink current capability on the 8 lines of Port 1 • 8-bit programmable timer/event counter 1 • 3 single-level vectored interrupts: – external – 8-bit programmable timer/event counter 1 The instruction set is based on that of the MAB8048 and is a sub-set of that listed in the “PCF84CxxxA family” data sheet. – I2C-bus • Two test inputs, one of which also serves as the external interrupt input • Stop and Idle modes • Supply voltage: 2.5 to 5.5 V • Clock frequency: 1 to 16 MHz • Operating temperature: −40 to +85 °C. 3 ORDERING INFORMATION (see note 1) PACKAGE TYPE NUMBER NAME PCF84C21AP DESCRIPTION VERSION DIP28 plastic dual in-line package; 28 leads (600 mil) SOT117-1 SO28 plastic small outline package; 28 leads; body width 7.5 mm SOT136-1 PCF84C41AP PCF84C81AP PCF84C21AT PCF84C41AT PCF84C81AT Note 1. Please refer to the Order Entry Form (OEF) for these devices for the full type number to use when ordering. This type number will also specify the required program and the ROM mask options. 1996 Nov 20 3 1996 Nov 20 8 4 SIO/ derivative interrupt 4 PORT 2 BUFFER IDLE STOP external interrupt timer interrupt ACCUMULATOR 8 PORT 2 FLIP-FLOPS DATA I2C-BUS INTERFACE INTERRUPT LOGIC CLOCK 3 INITIALIZE OSCILLATOR XTAL 2 DECIMAL ADJUST ARITHMETIC LOGIC UNIT TEMPORARY REGISTER 1 8 8 8 TIMER/ EVENT COUNTER MEMORY BANK FLIP-FLOPS 8 LOWER PROGRAM COUNTER CONDITIONAL BRANCH LOGIC INSTRUCTION REGISTER & DECODER 8 5 HIGHER PROGRAM COUNTER RESIDENT ROM 2 kbytes (PCF84C21A) 4 kbytes (PCF84C41A) 8 kbytes (PCF84C81A) DECODE 8 8 ACC BIT TEST ACC CARRY TIMER FLAG T1 INT / T0 D E C O D E RESIDENT RAM ARRAY 64 bytes (PCF84C21A) 128 bytes (PCF84C41A) 256 bytes (PCF84C81A) DATA STORE OPTIONAL SECOND REGISTER BANK 8 LEVEL STACK (VARIABLE LENGTH) REGISTER 0 REGISTER 1 REGISTER 2 REGISTER 3 REGISTER 4 REGISTER 5 REGISTER 6 REGISTER 7 MULTIPLEXER 8 8 PORT 0 BUFFER 8 P0.0 to P0.7 PORT 0 FLIP-FLOPS MBB561 - 1 PROGRAM STATUS WORD RAM ADDRESS REGISTER 8 Fig.0 Fig.1 Block Block diagram diagram of of PCF84C21A, PCF84C21A; PCF84C41A PCF84C41A and and PCF84C81A. PCF84C81A. INTERRUPT INT / T0 8 T1 32 INTERNAL CLOCK FREQ. 30 CONTROL & TIMING RESET XTAL 1 TEMPORARY REGISTER 2 PORT 1 FLIP-FLOPS PORT 1 BUFFER 8 P1.0 to P1.7 4 SDA/P2.3 P2.0 to P2.2 Telecom microcontrollers handbook, full pagewidth SCLK Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A BLOCK DIAGRAM Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers 5 5.1 PINNING INFORMATION 5.2 Pinning Pin description Table 1 DIP28 and SO28 packages SYMBOL V DD P2.2 1 28 SDA/P2.3 2 27 P2.1 SCLK 3 26 P2.0 P0.0 4 25 P1.7 P0.1 5 24 P1.6 P0.2 6 23 P1.5 P0.3 7 P0.4 8 P0.5 9 20 P1.2 P0.6 10 11 P0.7 PCF84C21A PCF84C41A PCF84C81A P2.2 1 1 bit of Port 2: 4-bit quasi-bidirectional I/O port SDA/P2.3 2 bidirectional data line of the I2C-bus interface, or 1 bit of Port 2: 4-bit quasi-bidirectional I/O port SCLK 3 bidirectional clock line of the I2C-bus interface 8 bits of Port 0: 8-bit quasi-bidirectional I/O port INT/T0 12 Interrupt/Test 0 T1 13 Test 1/count input of 8-bit timer/event counter 1 19 P1.1 VSS 14 ground 18 P1.0 XTAL1 15 crystal oscillator input or external clock input XTAL2 16 crystal oscillator output RESET 17 Reset input 22 P1.4 21 P1.3 17 RESET T1 13 16 XTAL2 15 XTAL1 14 P1.0 to P1.7 18 to 25 8 bits of Port 1: 8-bit quasi-bidirectional I/O port MBB562 P2.0 to P2.1 26 to 27 2 bits of Port 2: 4-bit quasi-bidirectional I/O port Fig.2 Pin configuration. VDD 6 INSTRUCTION SET 7 ROM is restricted to 2 kbytes for the PCF84C21A and 4 kbytes for the PCF84C41A. Therefore, the instructions SEL MB1/2/3 for the PCF84C21A, and the instructions SEL MB2/3 for the PCF84C41A should be avoided, as they would define non-existing program memory banks. 28 positive supply HIGH SINK OUTPUT CURRENTS The Port 1 outputs of these devices are designed for high current drive in the logic 0 state. They are capable of driving 10 mA loads and higher. Applications include drive for small relays and light-emitting diodes (LEDs). To avoid overload, care should be taken that the total Port 1 current averages less than 80 mA, i.e. an average of 10 mA per Port 1 line. Refer to Chapter “Limiting values” which specifies an upper limit of 100 mA for ISS. As RAM is limited to 64 bytes for the PCF84C21A and to 128 bytes for the PCF84C41A, care should be taken to avoid accesses to non-existing RAM locations. See the “PCF84CxxxA family ” data sheet for a complete description of the instruction set. 1996 Nov 20 FUNCTION P0.0 to P0.7 4 to 11 INT/T0 12 VSS PIN 5 Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers 8 ROM MASK OPTIONS ROM CODE OPTION Any mix of instructions and data up to ROM size of 2 kbytes for the PCF84C21A, 4 kbytes for the PCF84C41A and 8 kbytes for the PCF84C81A. Program/data Port Output P0.0 to P0.7 standard open-drain push-pull P1.0 to P1.7 standard open-drain push-pull P2.0 to P2.2 standard open-drain push-pull SDA/P2.3 − open-drain − P0.0 to P0.7 set reset − P1.0 to P1.7 set reset − P2.0 to P2.2 set reset − SDA/P2.3 set − − LOW (gmL) MEDIUM (gmM) HIGH (gmH) Port State after reset Oscillator Transconductance 9 HANDLING Inputs and outputs are protected against electrostatic discharge in normal handling. However, it is good practice to take normal precautions appropriate to handling MOS devices. See “Data Handbook IC14, Section: Handling MOS devices”. 10 LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER MIN. MAX. UNIT VDD supply voltage −0.5 +7 V VI all input voltages −0.5 VDD + 0.5 V II DC input current −10 +10 mA IO DC output current except Port 1 output LOW −10 +10 mA IO DC output current, Port 1 output LOW −10 +20 mA Ptot total power dissipation − 125 mW PO power dissipation per output − 30 mW IDD supply current −50 +50 mA ISS ground supply current −100 +50 mA Tstg storage temperature range −55 +150 °C Tj operating junction temperature − 90 °C 1996 Nov 20 6 Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers 11 DC CHARACTERISTICS VDD = 2.5 to 5.5 V; VSS = 0 V; Tamb = −40 to +85 °C; all voltages with respect to VSS; unless otherwise specified. SYMBOL PARAMETER CONDITIONS V VDD = 3 V; fxtal = 3.58 MHz (gmL) − 0.3 0.6 mA VDD = 5 V; fxtal = 10 MHz (gmL) − 1.1 3.0 mA VDD = 5 V; fxtal = 16 MHz (gmM) − 1.7 5.0 mA VDD = 5 V; fxtal = 16 MHz (gmH) − 2.5 6.0 mA VDD = 3 V; fxtal = 3.58 MHz (gmL) − 0.2 0.4 mA VDD = 5 V; fxtal = 10 MHz (gmL) − 0.8 1.6 mA VDD = 5 V; fxtal = 16 MHz (gmM) − 1.2 4.0 mA VDD = 5 V; fxtal = 16 MHz (gmH) − 1.7 5.0 mA − 1.2 10 µA − IDD operating supply current note 1; see Figs 4 and 5 supply current (Stop mode) UNIT 5.5 see Fig.3 IDD(stp) MAX. − operating supply voltage supply current (Idle mode) TYP. 2.5 VDD IDD(idle) MIN. note 1; see Figs 6 and 7 VDD = 2.5 V; notes 1 and 2; see Fig.8 Inputs VIL LOW level input voltage 0 VIH HIGH level input voltage 0.7VDD − VDD 0.3VDD V V ILI input leakage VSS ≤ VI ≤ VDD −1 − +1 µA LOW level output sink current [except Port 1; SDA/P2.3 and SCLK] VDD = 5 V; VO = 0.4 V; see Fig.9 LOW level output sink current; Port 1 VDD = 5 V; VO = 1.2 V; see Fig.10 Outputs IOL IOL1 IOL2 IOH IOH1 PCF84C21A; PCF84C41A 1.6 12 − mA PCF84C81A 1.6 5 − mA PCF84C21A; PCF84C41A 10 30 − mA PCF84C81A 10 19 − mA PCF84C21A; PCF84C41A 3 12 − mA PCF84C81A LOW level output sink current; SDA/P2.3 and SCLK VDD = 5 V; VO = 0.4 V; see Fig.11 3 6.5 − mA HIGH level pull-up output source current VDD = 5 V; VO = 3.5 V; see Fig.12 40 100 − µA VDD = 5 V; VO = 0 V; see Fig.12 − −140 −400 µA HIGH level push-pull output source current VDD = 5 V; VO = 4.6 V; see Fig.13 −1.6 −7 − mA Oscillator (see Fig.14) gmL LOW transconductance VDD = 5 V 0.2 0.4 1.0 mS gmM MEDIUM transconductance VDD = 5 V 0.9 1.6 3.2 mS gmH HIGH transconductance VDD = 5 V 3.0 4.5 9.0 mS RF feedback resistor 0.3 1.0 3.0 MΩ Notes 1. VIL = VSS; VIH = VDD; open drain outputs connected to VSS; all other outputs, including XTAL2, open (typical values at 25 °C with crystal connected between XTAL1 and XTAL2). 2. VIL = VSS; VIH = VDD; RESET and T1 at VSS; INT/T0 at VDD; crystal connected between XTAL1 and XTAL2; open drain outputs connected to VSS; all other outputs open. 1996 Nov 20 7 Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers MBC953 - 1 MLA712 3 18 handbook, halfpage handbook, halfpage I DD (mA) f xtal (MHz) 16 MHz 2 12 10 MHz guaranteed operating range 6 1 3.58 MHz 0 0 1 3 5 1 7 V DD (V) 3 5 V DD (V) 7 Supply current based on optimal oscillator selection. Fig.3 Maximum clock frequency as a function of operating supply voltage (VDD). Fig.4 MBB563 MLA713 - 1 3 Typical operating supply current (IDD) as a function of operating supply voltage (VDD). 1.5 handbook, halfpage handbook, halfpage 16 MHz IDD(idle) (mA) I DD (mA) 1.0 2 10 MHz 5V 0.5 1 3.58 MHz 3V 0 0 0.1 1 10 f xtal (MHz) 1 100 3 5 V DD (V) 7 Supply current based on optimal oscillator selection. Supply current based on optimal oscillator selection. Fig.6 Fig.5 Typical operating supply current (IDD) as a function of clock frequency (fxtal). 1996 Nov 20 8 Typical supply current in Idle mode (IDD(idle)) as a function of operating supply voltage (VDD). Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers MBB564 - 1 MBC954 1.5 3 handbook, halfpage handbook, halfpage IDD(idle) (mA) IDD(stp) 5V (µA) 2 1.0 o 85 C o 0.5 25 C 1 3V 0 0 0.1 1 10 f xtal (MHz) 1 100 3 5 V DD (V) 7 Supply current based on optimal oscillator selection. Fig.8 Fig.7 Typical supply current in Stop mode (IDD(stp)) as a function of operating supply voltage (VDD). Typical supply current in Idle mode (IDD(idle)) as a function of clock frequency (fxtal). MBB565 MBB566 60 16 handbook, halfpage I OL (mA) I OL1 (mA) 40 12 PCF84C21A PCF84C41A PCF84C81A 20 8 0 4 1 3 5 V DD (V) 7 1 3 5 V DD (V) 7 VO = 0.4 V. VO = 1.2 V. Fig.9 Fig.10 Typical LOW level output sink current for Port 1 (IOL1) as a function of operating supply voltage (VDD). Typical LOW level output sink current (IOL) as a function of operating supply voltage (VDD). 1996 Nov 20 9 Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers MBB567 16 I OL2 (mA) MBC960 300 handbook, halfpage I OH (µA) PCF84C21A PCF84C41A 12 200 VO = VSS 8 VO = 0.7 V DD 100 PCF84C81A 4 0 1 3 5 V DD (V) 7 Fig.11 Typical LOW level output sink current for SDA/P2.3 or SCLK (IOL2) as a function of operating supply voltage (VDD). 5 V DD (V) 7 Fig.12 Typical HIGH level pull-up output source current (IOH) as a function of operating supply voltage (VDD). MBC961 12 3 1 MBC962 6 handbook, halfpage handbook, halfpage I OH1 (mA) gm (mS) 8 4 4 2 g mH g mM g mL 0 0 1 3 5 V DD (V) 1 7 3 5 V DD (V) 7 VOL = VDD − 0.4 V. Fig.13 Typical HIGH level push-pull output source current (IOH1) as a function of operating supply voltage (VDD). 1996 Nov 20 Fig.14 Typical transconductance values (gm) as a function of operating supply voltage (VDD) for the options gmL, gmM and gmH. 10 Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers 12 AC CHARACTERISTICS VDD = 2.5 to 5.5 V; VSS = 0 V; Tamb = −40 to +85 °C; all voltages with respect to VSS; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT tr rise time all outputs VDD = 5 V; Tamb = 25 °C; CL = 50 pF − 30 − ns tf fall time all outputs VDD = 5 V; Tamb = 25 °C; CL = 50 pF − 30 − ns fxtal clock frequency see Fig.3 1 − 16 MHz Table 2 I2C-bus timing (see Figs 15 and 16) SYMBOL PARAMETER INPUT (see Fig.14) OUTPUT (see Fig.15; note 1) SCLK tHD;STA START condition hold time 14 ≥ -------f xtal tLOW SCLK LOW time 17 ≥ -------f xtal DF – 3 -----------------2 × f xtal tHIGH SCLK HIGH time 17 ≥ -------f xtal DF + 3 ------------------ ; note 2 2 × f xtal tRC SCLK rise time ≤1 µs ≤1 µs; note 3 tFC SCLK fall time ≤0.3 µs ≤0.1 µs; note 4 tBUF bus free time 14 ≥ -------f xtal tSU;DAT data set-up time tHD;DAT data hold time tRD SDA/P2.3 rise time ≤1 µs ≤1 µs; note 3 tFD SDA/P2.3 fall time ≤0.3 µs ≤0.1 µs; note 4 tSU;STO STOP condition set-up time 14 ≥ -------f xtal DF + 9 -----------------2 × f xtal ; note 2 SDA ≥ 250 ns ≥ 4.7 µs; note 5 15 ≥ -------f xtal ≥0 9 ≥ -------f xtal Notes 1. DF stands for Division Factor: the divisor of fxtal (see the “PCF84CxxxA family” data sheet). 3 ( DF + 1 ) DF – 3 2. Values given for ASC = 0; for ASC = 1: tHIGH = ---------------------------- ; tLOW = -----------------4 × f xtal 4 × f xtal 3. Determined by I2C-bus capacitance (Cb) and external pull-up resistor. 4. At maximum allowed I2C-bus capacitance Cb = 400 pF. 5. Determined by program. t LOW – 9 24 6. If tLOW < -------- , tSU:DAT ≥ --------------------- , independent of ASC. f xtal f xtal 1996 Nov 20 11 ; note 6 DF – 3 -----------------2 × f xtal Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers 0.7 V DD SCLK 0.3 VDD t LOW t HIGH 0.7 V DD SDA/P2.3 0.3 VDD t BUF t HD;STA t RD t RC t HD;DAT t FC t SU;DAT t FD t SU;STO MBB568 Fig.15 Slave SCLK receiver SDA/P2.3 timing (SCLK and SDA/P2.3 are inputs). t LOW 0.9 VDD SCLK VOLmax t HIGH t FD t FC 0.9 V DD SDA/P2.3 acknowledge bit t HD;STA t HD;DAT t HD;DAT V OLmax t HD;DAT t SU;STO t SU;DAT MBB569 t SU;DAT Fig.16 Master SCLK and transmitter SDA/P2,3 timing (SCLK and SDA/P2.3 are outputs). 1996 Nov 20 12 Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers 13 PACKAGE OUTLINES seating plane handbook, full pagewidthdual in-line package; 28 leads (600 mil) DIP28: plastic SOT117-1 ME D A2 L A A1 c e Z w M b1 (e 1) b MH 15 28 pin 1 index E 1 14 0 5 10 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 min. A2 max. b b1 c D (1) E (1) e e1 L ME MH w Z (1) max. mm 5.1 0.51 4.0 1.7 1.3 0.53 0.38 0.32 0.23 36.0 35.0 14.1 13.7 2.54 15.24 3.9 3.4 15.80 15.24 17.15 15.90 0.25 1.7 inches 0.20 0.020 0.16 0.066 0.051 0.020 0.014 0.013 0.009 1.41 1.34 0.56 0.54 0.10 0.60 0.15 0.13 0.62 0.60 0.68 0.63 0.01 0.067 Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. REFERENCES OUTLINE VERSION IEC JEDEC SOT117-1 051G05 MO-015AH 1996 Nov 20 EIAJ EUROPEAN PROJECTION ISSUE DATE 92-11-17 95-01-14 13 Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers SO28: plastic small outline package; 28 leads; body width 7.5 mm SOT136-1 D E A X c y HE v M A Z 15 28 Q A2 A (A 3) A1 pin 1 index θ Lp L 1 14 e bp 0 detail X w M 5 10 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y mm 2.65 0.30 0.10 2.45 2.25 0.25 0.49 0.36 0.32 0.23 18.1 17.7 7.6 7.4 1.27 10.65 10.00 1.4 1.1 0.4 1.1 1.0 0.25 0.25 0.1 0.9 0.4 inches 0.10 0.012 0.096 0.004 0.089 0.01 0.019 0.013 0.014 0.009 0.71 0.69 0.30 0.29 0.050 0.42 0.39 0.055 0.043 0.016 0.043 0.039 0.01 0.01 0.004 0.035 0.016 Z (1) θ 8o 0o Note 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. REFERENCES OUTLINE VERSION IEC JEDEC SOT136-1 075E06 MS-013AE 1996 Nov 20 EIAJ EUROPEAN PROJECTION ISSUE DATE 91-08-13 95-01-24 14 Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers Several techniques exist for reflowing; for example, thermal conduction by heated belt. Dwell times vary between 50 and 300 seconds depending on heating method. Typical reflow temperatures range from 215 to 250 °C. 14 SOLDERING 14.1 Introduction There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often used. Preheating is necessary to dry the paste and evaporate the binding agent. Preheating duration: 45 minutes at 45 °C. 14.3.2 This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our “IC Package Databook” (order code 9398 652 90011). 14.2 14.2.1 Wave soldering techniques can be used for all SO packages if the following conditions are observed: • A double-wave (a turbulent wave with high upward pressure followed by a smooth laminar wave) soldering technique should be used. DIP SOLDERING BY DIPPING OR BY WAVE • The longitudinal axis of the package footprint must be parallel to the solder flow. The maximum permissible temperature of the solder is 260 °C; solder at this temperature must not be in contact with the joint for more than 5 seconds. The total contact time of successive solder waves must not exceed 5 seconds. • The package footprint must incorporate solder thieves at the downstream end. During placement and before soldering, the package must be fixed with a droplet of adhesive. The adhesive can be applied by screen printing, pin transfer or syringe dispensing. The package can be soldered after the adhesive is cured. The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (Tstg max). If the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit. 14.2.2 Maximum permissible solder temperature is 260 °C, and maximum duration of package immersion in solder is 10 seconds, if cooled to less than 150 °C within 6 seconds. Typical dwell time is 4 seconds at 250 °C. REPAIRING SOLDERED JOINTS A mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. Apply a low voltage soldering iron (less than 24 V) to the lead(s) of the package, below the seating plane or not more than 2 mm above it. If the temperature of the soldering iron bit is less than 300 °C it may remain in contact for up to 10 seconds. If the bit temperature is between 300 and 400 °C, contact may be up to 5 seconds. 14.3 14.3.1 14.3.3 REPAIRING SOLDERED JOINTS Fix the component by first soldering two diagonallyopposite end leads. Use only a low voltage soldering iron (less than 24 V) applied to the flat part of the lead. Contact time must be limited to 10 seconds at up to 300 °C. When using a dedicated tool, all other leads can be soldered in one operation within 2 to 5 seconds between 270 and 320 °C. SO REFLOW SOLDERING Reflow soldering techniques are suitable for all SO packages. Reflow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied to the printed-circuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. 1996 Nov 20 WAVE SOLDERING 15 Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers 15 DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. Product specification This data sheet contains final product specifications. Limiting values Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). 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 Where application information is given, it is advisory and does not form part of the specification. 16 LIFE SUPPORT APPLICATIONS 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 customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. 17 PURCHASE OF PHILIPS I2C COMPONENTS 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 specification defined by Philips. This specification can be ordered using the code 9398 393 40011. 1996 Nov 20 16 Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers NOTES 1996 Nov 20 17 Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers NOTES 1996 Nov 20 18 Philips Semiconductors Product specification PCF84C21A; PCF84C41A; PCF84C81A Telecom microcontrollers NOTES 1996 Nov 20 19 Philips Semiconductors – a worldwide company Argentina: see South America Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113, Tel. +61 2 9805 4455, Fax. +61 2 9805 4466 Austria: Computerstr. 6, A-1101 WIEN, P.O. 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No. 5, 80640 GÜLTEPE/ISTANBUL, Tel. +90 212 279 2770, Fax. +90 212 282 6707 Ukraine: PHILIPS UKRAINE, 4 Patrice Lumumba str., Building B, Floor 7, 252042 KIEV, Tel. +380 44 264 2776, Fax. +380 44 268 0461 United Kingdom: Philips Semiconductors Ltd., 276 Bath Road, Hayes, MIDDLESEX UB3 5BX, Tel. +44 181 730 5000, Fax. +44 181 754 8421 United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409, Tel. +1 800 234 7381 Uruguay: see South America Vietnam: see Singapore Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD, Tel. +381 11 625 344, Fax.+381 11 635 777 For all other countries apply to: Philips Semiconductors, Marketing & Sales Communications, Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825 Internet: http://www.semiconductors.philips.com © Philips Electronics N.V. 1996 SCA52 All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. Printed in The Netherlands 457021/1200/03/pp20 Date of release: 1996 Nov 20 Document order number: 9397 750 01085