General Description

NY8A051G 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. NY8A051G adopts advanced CMOS technology to provide  customers remarkable solution with low cost and high performance benefits. RISC architecture is applied to  NY8A051G 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, NY8A051G is very suitable for those  applications that are sophisticated but compact program size is required.

As NY8A051G address I/O type applications, it can provide 6 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, NY8A051G has built-in infrared (IR) carrier generator with  selectable IR carrier frequency and polarity for applications which demand remote control feature.

NY8A051G 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, NY8A051G provides 1 set of 8-bit resolution Pulse Width Modulation  (PWM) output and buzzer output in order to drive motor/LED and buzzer.

NY8A051G employs dual-clock oscillation mechanism, both high oscillation or low oscillation can be derived from  internal resistor/capacitor oscillator. Moreover, based on dual-clock mechanism, NY8A051G 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 NY8A051G operates in Standby mode and Halt mode, kinds of event will issue interrupt requests and can  wake-up NY8A051G to enter Normal mode and Slow mode in order to process urgent events.

NY8A051G build in Crystal Load Capacitance (only for 32768Hz) and user can choose four options of CL (Disable,  7pF, 9pF and 12.5pF). It is convenient for user to get precise PPM without external capacitor。

NY8A051G build in large drive & sink current at PB0/PB1/PB2 (20mA~220mA@5V by six options). The NY8A051G adds an internal Pull High resistor 85KΩ at PB3 (VPP) and can be controlled to Enable / Disable by program.