1Pcs DS1338C-33# Real Time Clock I C RTC with 56-Byte NV RAM

1Pcs DS1340C-3# Real Time Clock I C RTC with Trickle Charger

1Pcs TL16C752CIRHBR UART Interface IC Dual UART With 64- Byte FIFO

1Pcs 3296 Clock & Timer Development Tools Adafruit DS1307 RTC Breakout Board

5Pcs PCA8565TS/1,118 Real Time Clock CMOS RTC/CALENDAR RTC IC

1Pcs SC16IS762IPW,112 UART Interface IC DUAL UART 64BYTE

1Pcs TL16C752CIPFBRQ1 TQFP-48 UART Interface IC DUAL UART W/ 64-BYTE FIFO

2Pcs DS1308U-33+T UMAX-8 Real Time Clock Low-Current IC RTC with 56-Byte NV RAM