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KX-B620 Series
KX-B520 Series
VCC (+5V)
(Power "on" Delay)
5th Pin of |C101
RESET
Fig. 13 Timing Chart of Power sequence
2-3 Gate Array (10103)
1) Function
This gate array is divided into five section expediently.
Equivalent circuit of this gate array is Fig 15.
2) Circuit Operation
@
Oscillator section
The 4 MHz clock is produced and supplied to CPU and internal clock generation circuit.
[4
Fig. 14 Equivalent Circuit
@® Interrupt Signal (INT) generation section
This signal is a start signal of 1 line sequence.
it is made from CCO software produced signal from CPU.
It is sampled by 250 kHz clock and synchronized with hardware timing. It interrupts CPU and makes
it start 1 line sequence. For example, the thermal head strobe signals and latch signal are produced.
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