General Description

NY8A053D is an EPROM based 8-bit MCU tailored for I/O based applications like remote controllers, fan/light  controller, game controllers, toy and various controllers.NY8A053D adopts advanced CMOS technology to provide  customers remarkable solution with low cost and high performance. RISC architecture is applied to NY8A053D and  it provides 55 instructions. All instructions are executed in single instruction cycle except program branch and skip  instructions which will take two instruction cycles. Therefore, NY8A053D is very suitable for those applications that  are sophisticated but compact program size is required.

As NY8A053D address I/O type applications, it can provide 12 I/O pins for applications which require abundant input  and output functionality. Moreover, each I/O pin may have additional features, like Pull-High/Pull-Low resistor and  open-drain output type through programming. Moreover, NY8A053D has built-in infrared (IR) carrier generator with  selectable IR carrier frequency and polarity for applications which demand remote control feature.

NY8A053D also provides 2 sets of timers which can be used as regular timer based on system oscillation or event  counter with external trigger clock. Moreover, NY8A053D provides 1 set of 8-bit resolution Pulse Width Modulation  (PWM) output and buzzer output in order to drive motor/LED and buzzer.

NY8A053D employs dual-clock oscillation mechanism, either high oscillation or low oscillation can be derived from  internal resistor/capacitor oscillator or external crystal oscillator. Moreover, based on dual-clock mechanism,  NY8A053D provides kinds of operation mode like Normal mode, Slow mode, Standby mode and Halt mode in order  to save power consumption and lengthen battery operation life. Moreover, it is possible to use internal  high-frequency oscillator as CPU operating clock source and external 32KHz crystal oscillator as timer clock input,  so as to accurate count real time and maintain CPU working power.

While NY8A053D operates in Standby mode and Halt mode, kinds of event will issue interrupt requests and can  wake-up NY8A053D to enter Normal mode and Slow mode in order to process urgent events.