M41T82ZM6E MCP7940NT-I/ST RV-3029-C3-32.768KHZ-OPTION-B-TA-QA RX-8025SA:AC3 PURE SN MCP79402-I/MS M41T83RMY6E MCP7940NT-E/SN DS1340Z-3+T&R DS1388Z-3+T&R MCP79402T-I/ST M41T83SMY6E PCF85063ATT/AJ RX-8025SA:AC0 RV-3029-C2-32.768KHZ-OPTION-A-TB-QC MCP79402T-I/MS M41T83ZMY6E MCP7940N-I/P DS1340U-3+T&R DS1307Z+T&R RV-3049-C2-32.768KHZ-OPTION-A-TB-QC