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   Product Introduction

NY8BM72A is an MTP based 8-bit MCU tailored for ultrasonic atomizer applications. It also designed for ADC based applications like home appliances or meter equipment. NY8BM72A adopts advanced CMOS technology to provide customers remarkable solution with low cost, high performance and high noise immunity benefits. The feature of re-programmable of MTP memory makes product development more flexible and efficient. RISC architecture is applied to NY8BM72A and it provides 53 instructions. All instructions are executed in single instruction cycle except program branch and skip instructions which will take two instruction cycles. Therefore, NY8BM72A is very suitable for those applications that are sophisticated but compact program size is required.

NY8BM72A provide on-chip debug (OCD) facilities as a low cost alternative to ICE. With OCD and a minimum of extra hardware, NY8BM72A can do ICE tasks such as free running, single stepping, break point setting and internal ram/register accessing.

NY8BM72A provides 12+1 channel high-precision 12-bit analog-to-digital converter (ADC), and high-precision Low Dropout Regulator and analog voltage comparator. They are suitable for any analog interface detection and measurement applications.

The NY8BM72A built-in high speed oscillator can be optioned for different center frequency. users can adjust this frequency in the program in a very small frequency step. With this feature ensures that NY8BM72A will find excellent use in different ultrasonic nebulizer applications.

   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.

? On-chip debugging (OCD) via two pins.

? 2K x 14 bits MTP.

? 128 bytes SRAM.

? 18 general purpose I/O pins (GPIO), PA[7:0], PB[7:0], PC[1:0] with independent direction control.

? PA[5, 3:0] , PB[3:0] and PC[1:0] have features of Pull-Low resistor for input pin.

? PA[7:0] and PB[7:0] and PC[1:0] have features of Pull-High resistor, the value of Pull-High resistor can be 100KΩ or 1MΩ. (PA5 is about 80KΩ).

? PB[7:0] and PC[1:0] has features of Open-Drain output.

? PA[5] has feature of input or open-drain output.

? I/O ports output current mode can be constant sink, small sink, normal sink or large sink.

? I/O ports output current mode can be small drive or normal drive(exclude PA5).

? 8-level hardware Stack.

? Direct and indirect addressing modes for data access.

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

? Three 10-bit reload or continuous down-count timers (Timer1, 2, 3).

? Three 10-bit resolution PWM (PWM1, 2, 3) output.

? In a special mode, Timer3 input clock is provided from I_HRC directly. PWM3 minimum width can be half input clock.

? Three buzzer (BZ1, 2, 3) output.

? Selectable 38/57KHz IR carrier frequency and high/low polarity according to data value.

? IR carrier sink current can be normal sink current or 340mA large sink current.

? Built-in high-precision Low-Voltage Detector (LVD).

? Built-in 12+1 channel high-precision 12-bit ADC.

? Built-in high-precision Voltage Comparator.

? Built-in Power-On Reset (POR).

? Built-in Low-Voltage Reset (LVR).

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

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