HMCS404AC--------------------------------------------------------------------------
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Vcc=6V
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c:
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::c
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20
I
10
o
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tV
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V
cc
=4.5V
V
/
/ /
v
/
y
I
/
'/
2
3
4
5
VCC-VOH(V)
-IOH
min.
vs.
(Vee
- VOH) Characteristics
(0
4
'"
0
1
sPins)
• DESCRIPTION OF
PIN
FUNCTIONS
Input and
output
signals
of
MCU
are described below.
• GND.
Vee.
VdilP
These are Power Supply Pins. Connect GND pin
to
Earth
(OV) and apply
Vee
power supply voltage
to
Vee
pin. V disp
is
an power supply
for
high voltage
Input/Output
pins with
maximum voltage
of
Vcc-40V.
Vdisp pin can be also used
as
RA
1 pin by mask
option.
For
details, see "INPUT/OUTPUT".
• TEST
TEST pin
is
not
for user's application. TEST must be con-
nected
to
Vee.
• RESET
RESET pin
is
used
to
reset
MCU.
For details, see
"RESET".
• OSC
I
,OSC
2
These are Input pins
to
the
internal oscillator circuit. They
can
be
connected
to
crystal,
or
ceramic filter resonator.
For
details,
see
"INTERNAL OSCILLATOR CIRCUIT."
•
D-port
(Do
to
DIS)
D-port is a I-bit
Input/Output
common
port.
Do
to
D3
are
standard type,
D4
to
DIS
are for high voltage. Each pin has
the
mask
option
to
select its circuit type.
For
details, See "INPUT/
OUTPUT".
•
R-port
(RO
to
RA)
R-port
is
a 4-bit
Input/Output
port. (only RA
is
2-bit con-
struction.)
RO
and R6
to
R8 are
output
ports,
R9
to
RA are
input
ports, and
RI
to
R5 are
Input/Output
common ports.
RO
to
R2
and
RA are
the
high voltage ports, R3
to
R9 are
the
standard ports. Each pin has
the
mask
option
to
select its cir-
cuit
type. R32, R33, R40,
R41
and
R42
are also available
as
306
6
T~=~26-+75"C
//
/
Vcc=6V
5
/
/
V
~
/
/'
,,/
V
cc
=4.5V
4
/
/
/
/
/~
/
)
V
o
2
3
4 5
VCC-VOH(V)
-IOH
min.
vs.
(Vee
-
VOH)
Characteristics
(RO
'"
R2
Pins)
INTo,
INTI,
SCK,
SI
and SO respectively. For details, see
"INPUT/OUTPUT" .
• INTo,INTI
These are the input pins
to
interrupt
MCU
operation exter-
nally. INTI can be used
as
an
external event input pin for
TIMER-B. INTo and INTI are also available
as
R
32
, and
R33
respectively.
For
details, See
"INTERRUPT".
• SCK, SI,
SO
__
These are Transfer clock I/O pin (SCK), serial data input pin
(SI) and serial data
output
pin (SO) used for serial interface.
SCK, SI, and SO are also available
as
~o,
~I
and
~2
respec-
tively.
For
details, see
"SERIAL
INTERFACE" .
•
ROM
MEMORY
MAP
MCU
includes
4096
words x
1,0
bits ROM.
ROM
memory
map
is
illustrated in Fig. I and described in the following
paragraph.
• Vector Address Area .....
$0000
to
$OOOF
When
MCU
is
reset or an
interrupt
is
serviced, the program
is
executed from the vector address. Program
the
JMPL instruc-
tions branching
to
the
starting addresses
of
reset routine
or
of
interrupt
routines.
• Zero-Page Subroutine Area .....
$0000
to
$OOlF
CAL
instruction allows
to
branch
to
the
subroutines in
$0000
to
$003F.
•
Pattern Area .....
$0000
to
$OFFF
P instruction allows referring to the ROM data in $0000
to
$OFFF
as
a pattern.
• Program Area ......
$0000
to
$OFFF
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