MK7A23P是带15位A/D转换器的RISC高性能8位微控制器。它内部包含2K字节的一次性可编程只读存储器、128字节数据存储器、定时器/计数器、捕捉、中断、LVR（低电压复位）、I/O口和PWM输出。

Feature

ROM size: 2K x 16 bits

－RAM: 51 x 8 bits(Special Purpose Register)+ 128 x 8 (General Purpose Register)

－STACK: 8 Levels

－One instruction is built by two systemsclock.??

－Reset mode:

(a) Power-On reset

(b) Low voltage reset

(c) RESETB/PB2 (if be set as reset pin) inputa negative pulse.

(d) Watchdog timer count overflow reset??

Dual Clock Mode

- External RC or Crystal oscillator

- Internal 4MHZ RC oscillator

Timer/counter: 5 units count up counter.

- TM0: 16-bit Timer(up-counter)

- TM1: 8-bit, PWM1(Period) & Timer

- TM2: 8-bit, PWM1(Duty) & Timer

- TM3: 8-bit, PWM2(Period) & Timer.

- TM4: 8-bit, PWM2(Duty) & Timer.

- TO : PWM2 cycle/2 output

Watchdog Timer: On chip WDT is based onan internal RC oscillator (for WDT usedonly). Have 8 period can be selected.



Usercan extend the WDT overflow period by using prescaler.

Interrupt events:

(a) External interrupt (PA7~PA0).

(b) Internal timer/event counter interrupt(TM0~TM4, PWM1, PWM2).

(c) ADC end of conversion interrupt

(d) Comparators compare result activated interrupt.

I/O port: 29 pins

4 Comparator sets which are shared pin with I/O port

PWM: two channels with 8 bit x 8 bit resolution

ADC: max 15-bit and 12 channels, at least 12-bit resolution. It can work at converter mode or compare mode by register



setting

Wake-up mode:

- Port A (PA7~PA0) pin change wakeup -

- WDT overflow

- i_WDT overflow

500O :500KHZ Clock Out (Adjustable)

CLO : System Clock Out

Operating voltage range2.2V ~ 5.5V

Operating temperature range-40 ℃ ~ + 85 ℃