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Three backup modes can be implemented using instructions: CPU operation only, clock generation only or clock
stop.
Features a built-in 2 Hz timer flip-flop and 10/100 Hz interval pulse output (internal time-based port)
Detection of PLL locked state supported.
8 of the LCD segment outputs (S23~S30) can also be used as key return timing outputs (KR
output ports are not monopolized by key return outputs and are available for other uses.
Built-in 20 bit general-purpose IF counter counts central frequencies for each band, providing station detection
during automatic tuning.
Built-in 8 bit buzzer output circuit supports generation of 254-level tone signals.
Built-in 2-channel, 6 bit A/D converter and 1-channel, 6 bit D/A converter.
Low-voltage detection circuit stops the CPU when power supply voltage drops below 1.5 V to prevent
malfunction.
OTP product: TC93P14F
Pin Assignment
(top view)
2
TC9314F
~KR
), so that
0
7
2003-07-03
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