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FM8P51F FEATURES
Only 47 single word instructions
All instructions are single cycle except for program branches which are two-cycle
13-bit wide instructions
8-bit wide data path
5-level deep hardware stack
4K x 13 bits on chip EPROM/ROM
140 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
Three 8-bit real time clock/counter (Timer1, Timer2, and Timer3) with 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
Five I/O ports (38 I/O pins) with independent direction control
32 programmable pull-high input pins
12 wake-up pins
2 open-drain pins
2 R-option pins
Clock output with high driving ability
19 channels of 15-bit resolution Resistor to Frequency Converter (RFC) output
2 channels of maximum 10-bit resolution Pulse Width Modulation (PWM) output
Built-in 8-bit data comparator
Seven internal interrupt source: Timer0 overflow, Timer1 match, Timer2 match, Timer3 match, SPI module (Receive & Transmit), RFC module; One external interrupt source: INT pin change
Wake-up from SLEEP by port input change
Power saving SLEEP mode
Programmable Code Protection
Built-in RC oscillator with external resistor
Selectable oscillator options:
- ERC: External Resistor/Capacitor Oscillator
- ERIC: External Resistor/Internal Capacitor Oscillator
- HF: High Frequency Crystal/Resonator Oscillator
- LF: Low Frequency Crystal Oscillator
Wide-operating voltage range:
- EPROM : 2.3V to 5.5V
- ROM : 2.3V to 5.5V
