產品描述：

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)