DRIVER IC

The S1D13517 is a color LCD graphics controller which uses an external SDRAM display buffer. The S1D13517 supports an 8/16-bit indirect host interface while providing high performance bandwidth to external SDRAM, allowing for fast screen updates. 

In applications controlled by microcomputers, the L297 Stepper Motor Controller IC creates four phase drive signals for two phase bipolar and four phase unipolar step motors. Half-step, normal, and wawe drive modes are available for the motor, and onchip PWM chopper circuits provide switch-mode control of the current in the windings. The workload on the microprocessor and the programmer is significantly reduced because the phases are created internally. The L297, which is available in DIP20 and SO20 packages, may be utilised with discrete transistors, darlingtons, or monolithic bridge drives like the L298N or L293E.

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The MAX7219/MAX7221 are small, serial input/output common-cathode display drivers that connect microprocessors (Ps) to bar-graph displays, 64 individual LED displays, or 7-segment numeric LED displays with up to 8 digits. A BCD code-B decoder, multiplex scan circuitry, segment and digit drivers, and an 8x8 static RAM that saves every digit are all included on the device. To set the segment current for all LEDs, just one external resistor is needed. The MAX7221 incorporates slewrate-limited segment drivers to lower EMI and is compatible with SPITM, QSPITM, and MICROWIRETM.