Sharp PC-1600

PC-1600
2. Block diagram
Since the printer, cassette, and floppy disk drive are all
controlled by the PC-1600, the CE-1600P and PC·1600F
can not operate by itself.
Battery, however, can be recharged without intervention of
the PC·1600.
A 32KB ROM within the CE·1600P contains the program
to operate the printer, cassette, and floppy disk drive.
System bus
(expansion b
PC-1600
(Main uni
CE·1600F
(2.5" FDD
SO-pin
r-
4-color plotting printer
Keys (color change,
female
PTMPG3308A
forward and reverse
..A
paperfeed)
['r-
Printer drive signal
Switches (remote,
print)
Driver
t-- Relay drive
LB1247 (x2)
signal
Printer and relay
drive signals
Others Remote
CR
SO-pin
detection
Read signal
male
~
Gate arrav
Cassette
I--
rv--
LR38045 interface
r--
I--
Write signal
Chip select
32KB ROM
SC27C256
I
50·pin
Address/Data
female
it'--
Power suppl
.
REM}
MIC CE-152
EAR (cassette tape recorder)
y
EA·1SO
(AC sdaptor}
l
· <..assene recortrer 1
interface ..
• CE-1600F software VCCl
rn memory I
PC·1600
Power supply circuit
(Fig.1) CE-1600P block diagram
PA71
IRO
PA7B~~------~
- - - - - - - - - - - - - -I "':
PBON-7N
peON-7N
Bu:
Mu:
FFl-3:
DC1-3:
INT;
8 bits 1/0 Buffer
Multiplexer
8 bits Latch
Decorder
Interrupt circuit
•- - _. -!- - - - - - t - ---- -r . - - - - - - - - - - - - - - f - l --,
CSNO I07N RSTN GND VCC
(Fig.1) LR38045 gate array block diagram
RST: Reset circuit
CMT I/F: Serial input
PAO-ll: 8 bits input
PAON-lN: 8 bits output port
peON-7N: 8 bits output port
RSTI~----~----~r-~
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