Document
FEELING TECHNOLOGY
FM8PE55/E57
EPROM/ROM-Based 8-Bit Microcontroller Series
Devices Included in this Data Sheet:
‧ FM8PE55E/E57E : EPROM devices ‧ FM8PE55/E57 : Mask ROM devices
FEATURES
‧ Only 47 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 ‧ Operating speed: DC-20 MHz clock input
DC-100 ns instruction cycle
Device
Pins # I/O # EPROM/ROM (Word) RAM (Byte)
FM8PE55/E55E 28
20
512
48
FM8PE57/E57E 28
20
2K
96
‧ Direct, indirect addressing modes for data accessing ‧ 8-bit real time clock/counter (Timer0) with 8-bit programmable prescaler ‧ 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 chi.