FM8PE59：

FM8PE59AE : 28-pin EPROM device 

FM8PE59BE : 32-pin EPROM device 

FM8PE59A : 28-pin Mask ROM device 

FM8PE59B : 32-pin Mask ROM device 

Only 49 single word instructions 

All instructions are single cycle except for program branches which are two-cycle 

13-bit wide instructions 

All ROM/EPROM area GOTO/FGOTO instruction 

All ROM/EPROM area subroutine CALL/FCALL instruction 

8-bit wide data path 

5-level deep hardware stack 

4K x 13 bits on chip EPROM/ROM 

144 x 8 bits on chip general purpose registers (SRAM) 

Operating speed: DC-20 MHz clock input 

DC-100 ns instruction cycle 

Direct, indirect addressing modes for data accessing 

One 8-bit real time clock/counter (Timer0) with 8-bit programmable prescaler 

One 8-bit real time clock/counter (Timer1) with 2-bit programmable prescaler and period setting 

Internal Power-on Reset (POR) 

Built-in Low Voltage Detector (LVD) for Brown-out Reset (BOR) 

Power-up Reset Timer (PWRT) and Oscillator Start-up Timer(OST) 

On chip Watchdog Timer (WDT) with internal oscillator for reliable operation and soft-ware watch-dog 

enable/disable control 

Three I/O ports IOA, IOB and IOC with independent direction control 

16 soft-ware control pull-high pins: Port B/Port C 

8 soft-ware control pull-down pins:IOA0~A3/IOB0~B3 

2 soft-ware control open-drain pins: IOC6/IOC7 

IR output channel with programmable frequency and duty cycle 

Serial Peripheral Interface (SPI) 

Four internal interrupt source: Timer0 overflow, Timer1 match, IROUT, and SPI module; Two external interrupt 

source: INT0 pin, and INT1 pin 

Wake-up from SLEEP by Port B/IOC4/IOC5 input falling 

Power saving SLEEP mode 

Programmable Code Protection 

Selectable oscillator options: 

- ERC: External Resistor/Capacitor Oscillator 

- XT:  Crystal/Resonator Oscillator 

- HF: High Frequency Crystal/Resonator Oscillator 

- LF:  Low Frequency Crystal Oscillator 

- IRC:  Internal Resistor/Capacitor Oscillator 

Wide-operating voltage range: 

-  EPROM : 2.3V to 5.5V 

-  ROM : 2.3V to 5.5V