T6B70AF

T6B70AF Preliminary TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic T6B70AF Interface IC for Water Heater The T6B70A incorporates two-channel 4-bit DA converter, a pseudo sine wave generator and an external analog signal detection/non-detection circuit. It is designed to be used mainly for communication between water heater and control unit. www.DataSheet4U.com Features · · · · On-chip two-channel 4-bit DA converter (opposite polarities) On-chip pseudo sine wave generator (external clock/16) On-chip external analog signal detection/non-detection circuit On-chip two-channel analog switch Weight: 0.16 g (typ.) Block Diagram OSCIN 1 OSCOUT 2 FOUT 3 SCTL Divide-by16 unit Pseudo sine wave generator 0°C 180°C 4-bit DA converter 4-bit DA converter 13 SOUT+ 12 SOUT− 16 VDD Waveform initialization block 4 Modulation control circuit Zero-cross waveform shaping circuit Amplifier input circuit SW1IN 14 SW1OUT 15 7 AMPIN 6 AMPOUT Cycle measurement counter SW2IN 11 SW2OUT 10 RESET Analog signal detection/non-detection Reset circuit Output buffer 8 VSS 9 DOUT 5 1 2002-02-28 T6B70AF Pin Assignment OSCIN OSCOUT FOUT SCTL RESET 1 2 3 4 T6B70AF 5 6 7 8 16 15 14 13 12 11 10 9 VDD SW1OUT SW1IN SOUT+ SOUT− SW2IN SW2OUT DOUT AMPOUT www.DataSheet4U.com AMPIN VSS Pin Function No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Symbol OSCIN OSCOUT FOUT SCTL RESET Input/Output Input Output Output Input Input Output Input ― Output Output Input Output Output Input Output ―...