Catalog > Semiconductors > Integrated Circuits M58321 IC M58321 16 Pin DIP Part No: M58321 Call for Price (Quoting) Add to Cart Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Specifications Device Type: CMOS Real-Time Clock and Calendar Package Type: DIP-16 Technology: Metal-Gate CMOS format selection Reference signal output available V through memory addressing Clock start/stop control 300 mil) - Operating Temperature: -30°C to +85°C technology 32.768 kHz crystal operation 4-bit microprocessor interface Single 5 V supply operation ystems early 1990s where battery-backed real-time clock and calendar functions were required.