产品描述：
FM8PE513M : OTP device
FEATURES
1K Word on chip OTP
49x8 bits on chip general purpose registers (SRAM)
8-bit wide data path
5-level deep hardware stack
only 42 single word instructions
All instructions are single cycle except for program branches which are two-cycle
All OTP area GOTO instruction
All OTP area subroutine CALL instruction
Direct, indirect addressing modes for data accessing
8-bit real time clock/counter (Timer0) with 8-bit programmable pre-scaler
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
One I/O port IOB with independent direction control
Soft-ware I/O pull-high/pull-down or open-drain control
One internal interrupt source: Timer0 overflow; Two external interrupt source: INT pin, Port B input change
Wake-up from SLEEP by INT pin or Port B input change
Power saving SLEEP mode
Built-in 8MHZ, 4MHZ, 1MHZ, and 455KHZ internal RC oscillator
Programmable Code Protection
Selectable oscillator options:
- IRC: Internal Resistor/Capacitor Oscillator
- ERIC: External Resistor/Internal Capacitor Oscillator
Operating voltage range: 2.0V to 5.0V