M34280MK-307FP

The M34280MK-307FP belongs to the M34280M1-xxxFP of the 4280 group.It is a kind of 4-bit single-chip microcomputer designed with CMOS technology.It is used for remote control transmitters.It is available in 20P2N-A package and it has 7 carrier waves and enables fabrication of 8*7 key matrix.

The following is about its features.(1)power-on reset circuit;(2)watchdog timer;(3)RAM back-up function;(4)carrier wave output function;(5)logic operation function;(6)timer with a reload register and carrier wave output auto-control function;(7)key-on wakeup function.

What comes next is some information about its absolute maximum ratings.(1):minimum instruction execution time is 8.0 s at f(XIN) is 4.0 MHz,system clock is f(XIN)/8 and VDD is 3.0 V;(2):supply voltage is from 1.8 V to 3.6 V;(3):subroutine nesting 4 levels;(4):typical for the voltage drop detection circuit is 1.50 V;(5):ROM(PROM)size is 1024 words;(6):RAM size is 32 words;(7):supply voltage(VDD) is from -0.3 to 5 V;(8):input voltage(VI) is from -0.3 to VDD+0.3 V;(9):output voltage(VO) is from -0.3 to VDD+0.3 V ;(10):power dissipation(PD) is 300 mW at the condition of TA is 25;(11):operating temperature range(TOPR) ranges from -20 to 85;(12):storage temperature range(TSTG) is from -40 to 125.