A
ll
and more about Sharp PC-1500
at
http://www.PC-1500.info
2-1.
RAM
MAP
0000
USER
MEMORY
YO
2KB
USER
MEMORY
STANDARD
so
USER
MEMORY
OPTION
IOKB
PV
EXPAND
ROMO
16KB
SYSTEM
POGRAM
16KB
PV
EXPAND
ROMI
16KB
* : Inhibit
to
use
by
redundancy
SI
S2
YI
SS
S4
SS
SS
S7
Y2
BFFF
c 0
Y8
FFF~'
2-2.
LSI
signal description
1.
LH
5801 (8-bit CMOS MPU)
4
1)
Outline
The
LH5801 is
the
8-bit microprocessor
of
the
CMOS
stat
ic
type, featuring very low power
dissipation and large data processing capability. The
MPU
incorporates functions such
as
the
LCD
·backplate signal generator,
input
port,
"external latch clock,
and
timer, which allows a
va
riety
of
:systems with a
few
chips.
2)
Feature•
of
MPU
o 8°bit parallel operations
o I 28KB direct acces.,ing
o Implementation
of
6.byte general purpose register besides
the
accumulator allows
the
use
of
three data pointers.
o 9·bit timer function
o Three kinds
of
interrupts
Non-maskable interrupt
Maskable interrupt
Timer interrupt
o
In
struction. set
of
80
kinds
o
DMA
and multiprocessor capabilities
o
MPU
wait function (memory access control)
o Implementation
of
8·bit
input
port
and clock
Pl/>
for external latch
Do
not
sale this PDF
!!!
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