Sharp PC-1500 Technical Reference Manual page 92
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Also See for PC-1500:
- Applications manual (222 pages) ,
- Technical reference manual (182 pages) ,
- Instruction manual (169 pages)
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PC-1500
at http://www.PC-1500.info
4-1-2. Block diagram
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1
CE159
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CE·15l
.
4-1-3. Power supplies
(PC-1500, CE-150, CE-158, CE-159)
(j)
PC-1500
and
its
peripheral
unit~
(CE-
150. CE-158.
CE-159)
are
driven independently
by dry
bau
cr
y.
Ni-Cd
banery.
or lithium
bat1ery.
When the
PC-
1500
is
connected
with
peripheral.
RAM.
ROM.
1/
0 P
C. C
MT
l/
F.
a nd
UART
arc
driven
by
VCC
or
VGG
supplied
from
the
P
C-
1500.
0
When
the
Ni-Cd
bnucry
of
the
CE-1
50
is charged
capable
to
dr ive the PC-
1500. power
is
supplied
from
the
CE-
150
to
the
PC-
1500
and therefon:
the
baucry
of
thc
PC-1500
does
no1
con::;u1nc.
In
addition. it
drives
the
driver of the
prir11er
and
rcn1otc
control
relays.
0
The
Ni-Cd
b<tllcry
of
the
Cc-
1
58 drives the
driver
and receiver
of
the RS-232C
seria
l
imerfoce
and
the
Centronics
parallel
interface.
0
When the CE-159 is in connection
with
the PC-1500.
it
is
o
perated
by
VUG
of
the P C-
1500.
and
its
1ne111ory contents
can
be
retained
by
the internal
llthiurn
battery
\vhcn
disconnected
fro
m
the
P
C-1
500.
87
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not
sale
this PDF!!!
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