ET6218R

Etek Microelectronics ET6218R LED Controller/driver General Description ET6218R is an LED Controller driver on a 1/7 to 1/8 duty factor. 7 segment output lines, 4 grid output lines, 1 segment/grid output lines, one display memory, control circuit, key scan circuit are all incorporated into a single chip to build a highly reliable peripheral device for a single chip microcomputer. Serial data is fed to ET6218R via a three-line serial interface, ET6218R pin assignments and application circuit are optimized for easy PCB Layout and cost saving advantages. Features z CMOS Technology z Low Power Consumption z Multiple Display Modes(4～5 Grid, 7～8 segment) z Key scaning(7×1 Matrix) z 8-step Dimming Circuitry z Serial Interface for Clock, Data Input/Output, Strobe Pins z Available in 18-pin, DIP Package Pin Configurations Rev 1.0 2012-4-13 1/15 ET6218R Pin Description Pin No. Pin Name I/O Description Data I/O Pin(N-channel, Open-Drain) 5 DI/O(DIN&DOUT) I/O This pin outputs serial data at the falling edge of the shift clock and inputs serial data at the rising edge of the shift clock(starting from the lower bit) Clock Input Pin 6 CLK I This pin reads serial data at the rising edge and outputs data at the falling edge Serial Interface Strobe Pin 7 STB I The data input after the STB has fallen is processed as a command When this pin is “HIGH”, CLK is ignored Key Data Input Pins 8 K1 I The data sent to these pins are latched at the end of the display cycle (Interface...