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.
As NY8BM72A address I/O type applications, it can provide 18 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, NY8BM72A has built-in large infrared (IR) carrier generator (340mA@3V) with selectable IR carrier frequency and polarity for applications which demand remote control feature.
NY8BM72A also provides 4 sets of timers which can be used as regular timer based on system oscillation or event counter with external trigger clock. Moreover, NY8BM72A provides 3 sets of 10-bit resolution Pulse Width Modulation (PWM) output and 3 sets of buzzer output in order to drive motor/LED and buzzer.
NY8BM72A 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, NY8BM72A 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 NY8BM72A operates in Standby mode and Halt mode, kinds of event will issue interrupt requests and can wake-up NY8BM72A to enter Normal mode and Slow mode in order to process urgent events.
NY8BM72A can be configured as NY8B072A, NY8B062A and NY8B062D compatible functions. As a result, these body also share the benefit of NY8BM72A OCD.
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.
Built-in Resistance to Frequency Converter (RFC) function.
Dual-clock oscillation: System clock can switch between high oscillation and low oscillation.
High oscillation:
E_HXT (External High Crystal Oscillator, above 6MHz)
E_XT (External Crystal Oscillator, 455K~6MHz)
I_HRC (Internal High Resistor/Capacitor Oscillator ranging from 1M~20.8MHz)
Low oscillation:
E_LXT (External Low Crystal Oscillator, about 32KHz)
I_LRC (Internal 32KHz oscillator)
Four kinds of operation mode to reduce system power consumption:
Normal mode, Slow mode, Standby mode and Halt mode.
Twelve hardware interrupt events:
Timer0 overflow interrupt.
Timer1 underflow interrupt.
Timer2 underflow interrupt.
Timer3 underflow interrupt.
WDT timeout interrupt.
PA/PB input change interrupt.
3 set External interrupt.
LVD interrupt.
Comparator output status change interrupt.
ADC end-of-convert interrupt.
Twelve interrupt events to wake-up NY8BM72A from Standby mode:
Timer0 overflow interrupt.
Timer1 underflow interrupt.
Timer2 underflow interrupt.
Timer3 underflow interrupt.
WDT timeout interrupt.
PA/PB input change interrupt.
3 set External interrupt.
LVD interrupt.
Comparator output status change interrupt.
ADC end-of-convert interrupt.
Five interrupt events to wake-up NY8BM72A from Halt mode:
WDT timeout interrupt.
PA/PB input change interrupt.
3 set External interrupt.
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