DS1742-100+ – Y2KC Nonvolatile Timekeeping RAM

Description

Technical Specifications:

• Memory Size: 2KB NV SRAM
• Clock Format: 24-hour BCD
• Interface: Byte-wide parallel
• Operating Voltage: 4.5V to 5.5V
• Current Consumption: 3mA at 5V
• Operating Temperature: 0°C to 70°C
• Package Type: 24-DIP Module (0.600″, 15.24mm)
• Applications: Utility meters, industrial controllers, point-of-sale equipment, medical devices, and other systems requiring reliable timekeeping and data retention.

Product Features:

• Integrated Solution: Combines RTC, 2KB NV SRAM, crystal, power-fail control circuit, and lithium energy source in a single module.
• Nonvolatile Memory: Provides 2KB of static RAM with data retention ensured by an internal lithium energy source, offering over 10 years of operation without external power.
• Real-Time Clock/Calendar: Tracks century, year, month, date, day, hours, minutes, and seconds in 24-hour BCD format, with automatic leap year compensation valid up to the year 2100.
• Easy Integration: Clock registers are accessed identically to the static RAM, residing in the eight top RAM locations, simplifying interfacing.
• Battery Monitoring: Constantly monitors the internal battery voltage, with a battery flag bit indicating the voltage level range.