M41T64Q6F DS1302ZN+T&R MCP79411-I/SN MAX31341EWC+T 1339AC-31SRGI ISL1218IUZ BQ3285P-SB2E3 DS1302SN+T&R PCF85263ATL/AX M41T65Q6F 1337AGDCGI ISL1218IUZ-T BQ3285S-SB2TRG4 DS1339U-33+T&R MCP79412-I/ST PCF85263ATT1/AZ RV-3049-C2-32.768KHZ-OPTION-A-TB-QA DS1339U-2+T&R BQ4285S-SB2G4 DS1308U-33+T