47C800

The 47C800 is a high speed and high performance 4-bit single chip microcomputer, which inte-rgrates Rom, RAM,  input/output ports, timer/counters, a serial interface, and two clock generator on a chip. The 47C800 is the standard type device in the TLCS-470 series, and offers high current output capacity for LED direct drive.

The 47C800 has some unique features listed below:(1)4-bit single chip microcomputer;(2)instruction execution ti-me:1.3 us (at 6 MHZ),244 us (at 32.8KHZ);(3)92 basic instructions;(4)table look-up instruction;(5)5-bit to 8-bit data conversion instruction;(6)subroutine nesting:15 levels max;(7)6 interrupt sources(all sources have independent latches each,and multiple interrupt control is avaliable);(8)two 12-bit timer/counters(timer,even counter, and pulse  pulse width measurement mode);(9)serial interface with a 8-bit buffer(external/internal clock, leading/trailing edge shift, and 4/8-bit mode).

Some absolute maximum ratings(Vss is 0 V) and AC characteristics of 47C800 are concluded below:(1):supply voltage is -0.3 V to 7 V;(2): input voltage is -0.3V to VDD+0.3 V; (3):output voltage is -0.3 V to VDD +0.3V execpt the sink open pin, but include R7; output voltage is -0.3 V to 10 V if the sinl opea drain pin except R7;(4) output curren per pin is 3.2 mA; output total is 120 mA;(5):power dissipation is 600 mW;(6):soldering temperature is 260;(7):storage temper-ature is -55 to 125;(8)operating temperature is -40 to 70. AC characteristics:(1):instruction cycle time is 1.33 us min and 20 us max in the normal operating mode;nstruction cycle time is 235 us min and 267 max in the slow operating mode;(2):high level clock pulse width is 80 ns min for external clock operation; low level clock pulse width is 80 ns min for external clock operation;(3):shift data hold time is 0.5tcy to 300ns min.