Reset - Casio CZ-1 Service Manual And Spare Parts List

23.
RESET
CIRCUIT
The
following
circuit
is
Reset
(power
fail
detection)
circuit
which
generates
power
ON/OFF
reset pulse
for
peripheral LSIs
(CPUs, Music
LSIs,
Key
interface LSI,
and Key
touch
control
LSI),
to protect recorded data
in
the
RAM's.
p—
CE2
for
Main
RAM
(j<PD4464C-15L)
RESET
signal for Peripheral LSIs
^
CE2
for
Sub
RAM
0iPD4464C-15L
1)
1
—
Timing
pulse for
Flip/Flop of key touch data transmission
CE
for
RAM
cartridge
RA-6
CET
for
Sub
RAM
(jiPD4464C 15L-2)