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October 1992
IlM l
80C31/80C51
DATASHEET
CMOS SINGLE-CHIP
8 BIT MICROCONTROLLER
80C31/80C51-L : 0 TO 6 MHz WITH 2.7 V < Vcc < 6 V
80C51F : 80C51 WITH PROTECTED ROM
80C31/80C51:0 TO 1