Product Introduction

NY8A050D 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. NY8A050D adopts advanced CMOS technology to provide customers remarkable solution with low cost and high performance benefits. RISC architecture is applied to NY8A050D 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, NY8A050D is very suitable for those applications that are sophisticated but compact program size is required.

As NY8A050D 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.

NY8A050D also provides 1 set of timer which can be used as regular timer based on system oscillation or event counter with external trigger clock.

NY8A050D 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, NY8A050D 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.

While NY8A050D operates in Standby mode and Halt mode, kinds of event will issue interrupt requests and can wake-up NY8A050D to enter Normal mode and Slow mode in order to process urgent events.

   Product Features

 Wide operating voltage range:

 2.0V ~ 5.5V @system clock ≦8MHz.

 2.2V ~ 5.5V @system clock ＞8MHz.

 Wide operating temperature: -40°C ~ 85°C.

 512 x 14 bits EPROM.

 32 bytes SRAM.

 6 general purpose I/O pins (GPIO), PB[5:0], with independent direction control.

 PB[3:0] have features of Pull-Low resistor for input pin.

 PB[5:0] have features of Pull-High resistor for input pin.

 PB[5:4] and PB[2:0] have features of open-drain output.

 PB[3] have feature of input or open-drain output.

 4 level hardware Stack.

 Direct and indirect addressing modes for data access.

 One 8-bit up-count timer (Timer0) with programmable prescaler.

 Built-in Power-On Reset (POR).

 Built-in Low-Voltage Reset (LVR).

 Built-in Watch-Dog Timer (WDT) enabled/disabled by firmware control.

 Dual-clock oscillation: System clock can switch between high oscillation and low oscillation.

 High oscillation: I_HRC (Internal High Resistor/Capacitor Oscillator ranging from 1M~20MHz)

 Low oscillation: I_LRC (Internal 32KHz oscillator)

 Four kinds of operation mode to reduce system power consumption:

 Normal mode, Slow mode, Standby mode and Halt mode.

 Three hardware interrupt events:

 Timer0 overflow interrupt.

 PB input change interrupt.

 External interrupt.

 Three interrupt events to wake-up NY8A050D from Standby mode:

 Timer0 overflow interrupt.

 PB input change interrupt.

 External interrupt.

 Two interrupt events to wake-up NY8A050D from Halt mode:

 PB input change interrupt.

 External interrupt.

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