M48T08-150PC1, Часы реального времени TIMEKEEPER, SRAM 64Кбит (8Кбx8), 5В, [PCDIP-28]

Real Time Clock with Parallel Interface, TIMEKEEPER® SRAM, STMicroelectronics
Timekeepers, combine SRAM with up to 256 Kbytes of memory, and a byte-wide interface along with a quartz-based very-low-power oscillator with a clock/calendar circuit to provide real-time data. Packages embed the battery and crystal.