T6B70AF Datasheet, PDF (1/15 Pages) Toshiba Semiconductor – Interface IC for Water Heater

Preliminary ^{TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic}
T6B70AF
Interface IC for Water Heater
T6B70AF
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.
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
Block Diagram
Weight: 0.16 g (typ.)
OSCIN 1
OSCOUT 2
FOUT 3
SCTL 4
SW1IN 14
SW1OUT 15
SW2IN 11
SW2OUT 10
RESET 5
Divide-by-
16 unit
Modulation
control circuit
Reset
circuit
Pseudo
sine wave ^0°C
generator 180°C
Waveform
initialization block
4-bit
DA converter
4-bit
DA converter
13 SOUT+
12 SOUT−
16 V_DD
Zero-cross
waveform
shaping circuit
Amplifier input
circuit
Cycle measurement counter
Analog signal
detection/non-detection
Output buffer
7 AMPIN
6 AMPOUT
8 V_SS
9 DOUT
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2002-02-28