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NY8BE64A is a MTP based 8-bit MCU with EEPROM data memory built-in, tailored for I/O based applications like home appliances or meter equipment. NY8BE64A adopts advanced CMOS technology to provide customers remarkable solution with low cost, high performance and high noise immunity benefits. RISC architecture is applied to NY8BE64A 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, NY8BE64A is very suitable for those applications that are sophisticated but compact program size is required.
NY8BE64A provides 12 + 2 channel high-precision 12-bit analog-to-digital converter (ADC), and high-precision analog voltage comparator. They are suitable for any analog interface detection and measurement applications.
As NY8BE64A 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, NY8BE64A has built-in large infrared (IR) carrier generator with selectable IR carrier frequency and polarity for applications which demand remote control feature.
NY8BE64A also provides 3 sets of timers which can be used as regular timer based on system oscillation or event counter with external trigger clock. Moreover, NY8BE64A provides 5 sets of 10-bit resolution Pulse Width Modulation (PWM) output and 1 sets of buzzer output in order to drive motor/LED and buzzer.
NY8BE64A 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, NY8BE64A 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 NY8BE64A operates in Standby mode and Halt mode, kinds of event will issue interrupt requests and can wake-up NY8BE64A to enter Normal mode and Slow mode in order to process urgent events.
NY8BE64A provide on-chip debug (OCD) facilities as a low cost alternative to ICE. With OCD and a minimum of extra hardware, NY8BE62D can do ICE tasks such as free running, single stepping, break point setting and internal ram/register accessing.
NY8BE64A built-in a variable 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 NY8BE64A will find excellent use in different ultrasonic nebulizer applications.
Wide operating voltage range:
3.3V ~ 5.5V @ FINST = 8MHz。
2.2V ~ 5.5V @ FINST＜4MHz。
Wide operating temperature: -40°C ~ 85°C.
High ESD over ±8KV.
High EFT over ±4KV with Noise Filter Enable. (operating voltage @5V)
4K x 14 bits MTP.
288 bytes SRAM.
256 bytes EEPROM. (Endurance: 10,000 times)
18 general purpose I/O pins (GPIO), PA[7:0], PB[7:0], PC[1:0] with independent direction control.
PA[5, 3:0] and 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] have features of Open-Drain output.
I/O ports output current mode can be small sink, normal sink or large sink. PA[4] cab be ultra sink current mode.
I/O ports output current mode can be small drive, normal drive. PA[4] cab be ultra drive current mode.
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, 4, 5).
Five 10-bit resolution PWM (PWM1, 2, 3, 4, 5) output.
One buzzer (BZ1) output.
Selectable 38/57KHz IR carrier frequency and high/low polarity according to data value.
Built-in high-precision Low-Voltage Detector (LVD).
Built-in 12+2 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~20MHz)
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.
Thirteen hardware interrupt events:
Timer0 overflow interrupt.
Timer1 underflow interrupt.
Timer4 underflow interrupt.
Timer5 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.
Serial Interface Module (SIM)interrupt.
UART interface module read interrupt or write interrupt.
EE interrupt.
Eleven interrupt events to wake-up NY8BE64A from Standby mode:
Timer0 overflow interrupt.
Timer1 underflow interrupt.
Timer4 underflow interrupt.
Timer5 underflow interrupt.
WDT timeout interrupt.
PA/PB input change interrupt.
External interrupts. (INT0, INT1, INT2).
LVD interrupt.
Comparator output status change interrupt.
ADC end-of-convert interrupt.
Serial Interface Module (SIM) interrupt.
Three kinds of interrupt events to wake-up NY8BE64A from Halt mode:
WDT timeout interrupt.
PA/PB input change interrupt.
External interrupts. (INT0, INT1, INT2)
Build-in 4 variable oscillator options: 32MHz/20.8MHz/16MHz/13.6MHz. Fine-tuned accuracy to ±0.1%.
Build-in 2 wires on chip debug circuit (OCD).
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