MC14489B Overview
Key Features
- data retention plus decode and scan circuitry, thus relieving processor overhead
- A single, current-setting resistor is the only ancillary component required
- The on-chip decoder outputs 7-segment-format numerals O to 9, hexadecimal characters A to F, plus 151etters and symbols
- The MC144898 is compatible with the Motorola SPI and National MICRO-WIRETM serial data ports
- The chip's patented 8itGrabberTM registers augment the serial interface by allowing random access without steering or address bits
- A 24-bit transfer updates the display register
- Changing the configuration register requires an 8-bit transfer
