PT8A3514/15/16/17/18/19(A/B) Smart Iron Controller

Transcription

1 Features Build in RC oscillator for sensor signal detection On chip shunt regulated power supply Using AC 0Hz/0Hz as timer clock can select by Part No. Accurate timer with error dropping in ±% Sensitive movement detection Powerful immunity of sensor Vibration 0s time out for IRON in static horizontal position min/0min/min time out for IRON in static vertical position to indicate operation status Usable in both 0V and 0V voltage supply system Quick function test mode Support buzzer Few external components System standby mode power dissipation less than W (Base on recommended application circuits) DIP- and SOIC- package Patent No: ZL Applications Description The PTA/////9(A/B) are high performance low power and low cost CMOS chips designed for intelligent electric IRON controller. Their intelligence mainly results from their sensitive detection to the movement and static position of electric iron by using a special sensor. With the sensor, these chips can detect the vertical/horizontal position and movement status of IRON. These chips are equipped with on-chip shunt regulator, sensor signal processor, build-in oscillator, timer, logic control, power on reset and output driving block etc. Pin Assignment Electric Iron Controller Fig PTAx pin assigment Pad Description Pin No. Pin Name I/O Description O O Relay drive output, active high. O - Ground. I Low for test mode*. Discharge the external electrolytic cap to stabilize and limit its voltage. Output KHz to driver buzzer when timer is out. Active high. With open drain output, it can shut off external in parallel with this open-drain transistor, active low. I Sensor signal input, input high will be considered horizontal. I AC 0/0Hz signal for clock with Schmitt architecture, internal drop down. - Power supply. *Note: Teat mode comparison table: Real timer 0s m 0m m Test timer s 9.s 9.s s

2 Block Diagram Sensor signal processor O Logic Control Circuit Power on reset System oscillator 0s//0/min Timer PTA//////9 Figure. Function Block Diagram Maximum Ratings Storage Temperature - 0 o C to + o C Supply Voltage to Ground Potential (Inputs & V CC only) to V CC +0.V Supply Voltage to Ground Potential (Outputs & D/O only) to V CC +0.V DC Input Voltage V to V CC +0.V DC Output Current..0mA Power Dissipation..00mW Recommended Operating Conditions Symbol Description Min Typical Max Unit V CC Supply voltage.. V T A Operating Temperature -0 C Electrical Characteristics (T A = -0 ~ ºC, unless otherwise noted) Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Sym Parameter Test Conditions Uni Min Typ Max Condition t V CC Internal Shunt regulator voltage V I IL Input low current() V V IL =0V A I IL Input low current() V V IL =0V A I IL Input low current() V V IL =0V A I IH Input high current() V V IH =V 0-00 A I IH Input high current(acsel) V V IH =V A I IH Input high current() V V IH =V - - A I OH Output Source Current ( /DISC) V V OH =.V ma I OL Output Sink Current ( /DISC) V V OL =0.V - - ma I OL Output Sink Current () V V OL =0.V ma I CC Power supply current V See Figure A

3 Functional Description (Refer to Block Diagram) The chip is comprised of several blocks: on-chip shunt regulator, sensor signal processor, build-in system oscillator, 0s/min/0min/min timer, logic control circuit, and power on reset, etc. Each block will be described as below. Logic control circuit Logic control circuit mainly carries out logic control function. It not only collects signals from other blocks, but also generates various driving signals including &DISC. Besides, an external will flash at about Hz and a buzzer will make a sound with a frequency of KHz every 0.s for times or continual after internal timer times out. Signals at will control external relay to decide whether IRON heats or not. Sensor signal processor The core in the whole system is how to correctly detect the position and movement of sensor so that the system can be always under safe control. Thus, it is critical to accurately and correctly deal with signal from sensor in different status and eliminate the noise caused by debounce action from sensor. Here, a unique structure is used to do the high-requirement signal processing. In real application of IRON, sensor needs to be installed according to certain requirements (for example its inclination). Timer Timer block mainly generates various timing signal according to the position of IRON. It is easy to get accurate timer (0s/min/0min/min) by using AC 0Hz/0Hz signal as timing reference. As above description, Iron in Horizontal position over 0s will stop heating. While Iron in vertical position over min/0min/ min will also stop heating. Buzzer A buzzer will make 0.S sound with a frequency of KHz for times or continual after internal timer timeouts. During heating, pin is floating and an external will turn on. After times out, pin outputs pulse and an external will flash at about Hz.

4 Application Circuit Note: Suggest the parameters of relay meet the following specification: VDC,.KΩ Coil resistance 0VAC O UT R K R K D N00 J D N R 0K Q R 00K C uf/v C 0 C 0uF/00V Q IC R 00K R M 0VAC PTAx SENSOR C 0 R.K Figure Typical Application Circuit of PTAXA 0V Figure Typical Application Circuit of PTAx 0V/0Hz D R R 0VAC OUT N00.K C 0uF/00V J Q D N R 0K 00K Q IC C uf/v C 0 R 00K R 0K 0VAC PTAx SENSOR C 0 R K Figure Typical Application Circuit of PTAXB 0V Figure Typical Application Circuit of PTAx 0V/0Hz

5 D R R D 0VAC N00 K K Infrared R*.K BUZ D N 0mm R 00K O UT C 0uF/00V J Q R*.K Q IC C 0 C uf/v R K R M 0VAC PTAx D Photo Diode C 0 R K Figure Typical Application Circuit of PTAXA 0V Figure Typical Application Circuit of PTAx 0V 0Hz R D D 0VAC.K N00 Infrared R*.K BUZ D N 0mm R 00K O UT C 0uF/00V J Q R*.K Q IC C 0 C uf/v R K R 0K 0VAC PTAx D Photo Diode C 0 R K Figure Figure Typical Application Circuit of of PTAx PTAXB 0V 0V 0Hz

6 Mechanical Information PE (DIP-) Note: ) Controlling dimensions in millimeters. ) Ref: JEDEC MS-00D/BA Symbol Dimensions In Millimeters Min Max A.0.0 A 0.0 A B B. BSC c D E E.0.90 e.0 BSC L E

7 WE (SOIC-) Note: ) Controlling dimensions in millimeters. ) Ref: JEDEC MS-0E/AA Symbol Dimensions In Millimeters Min Max A.0.0 A A.0.0 b c D E E e. BSC L θ 0

8 Ordering Information Part Number Package Code Package PTAxAPE P Lead free DIP- PTAxBPE P Lead free DIP- PTAxAWE W Lead free and Green SOIC- PTAxBWE W Lead free and Green SOIC- Note: See below Function comparison table for details. E = Pb-free or Pb-free & Green Adding X Suffix= Tape/Reel Function comparison table Part Number Frequency Vertical Timer Horizontal timer Buzzer PTA A 0Hz 0min 0s Continual PTA A 0Hz min 0s Stop after times PTA A 0Hz min 0s Stop after times PTA A 0Hz min 0s Continual PTA A 0Hz min 0s Continual PTA 9A 0Hz 0min 0s Stop after times PTA B 0Hz 0min 0s Continual PTA B 0Hz min 0s Stop after times PTA B 0Hz min 0s Stop after times PTA B 0Hz min 0s Continual PTA B 0Hz min 0s Continual PTA 9B 0Hz 0min 0s Stop after times Pericom Semiconductor Corporation Pericom reserves the right to make changes to its products or specifications at any time, without notice, in order to improve design or performance and to supply the best possible product. Pericom does not assume any responsibility for use of any circuitry described other than the circuitry embodied in Pericom product. The company makes no representations that circuitry described herein is free from patent infringement or other rights, of Pericom.