21.2 Electrical Characteristics of Masked ROM and PROM Versions
21.2.1 DC Characteristics
Table 21-2 lists the DC characteristics. Table 21-3 lists the permissible output currents.
Table 21-2 DC Characteristics
Conditions: V
CC
= 5.0 V ± 10%, AV
CC
= 5.0 V ± 10%, V
REF
= 4.5 V to AV
CC
,
V
SS
= AV
SS
= 0 V*, T
a
= –20°C to +75°C (regular specifications),
T
a
= –40°C to +85°C (wide-range specifications)
Item
Symbol
Min
Typ
Max
Unit Test Conditions
Port A,
V
T
–
1.0
—
—
V
P8
0
to P8
2
,
V
T
+
—
—
V
CC
×
0.7 V
PB
0
to PB
3
V
T
+
– V
T
–
0.4
—
—
V
Input high
RES
,
STBY
, V
IH
V
CC
– 0.7 —
V
CC
+ 0.3 V
voltage
NMI, MD
2
to
MD
0
EXTAL
V
CC
×
0.7 —
V
CC
+ 0.3 V
Port 7
2.0
—
AV
CC
+ 0.3 V
Ports 1, 2, 3,
2.0
—
V
CC
+ 0.3 V
4, 5, 6, 9,
P8
3
, P8
4
,
PB
4
to PB
7
Input low
RES
,
STBY
, V
IL
–0.3
—
0.5
V
voltage
MD
2
to MD
0
NMI, EXTAL,
–0.3
—
0.8
V
ports 1, 2, 3,
4, 5, 6, 7, 9,
P8
3
, P8
4
,
PB
4
to PB
7
All output pins V
OH
V
CC
– 0.5 —
—
V
I
OH
= –200 µA
(except
RESO
)
3.5
—
—
V
I
OH
= –1 mA
Output low
All output pins V
OL
—
—
0.4
V
I
OL
= 1.6 mA
voltage
(except
RESO
)
Ports 1, 2,
—
—
1.0
V
I
OL
= 10 mA
5, and B
RESO
—
—
0.4
V
I
OL
= 2.6 mA
Note:
*
If the A/D and D/A converters are not used, do not leave the AV
CC
, AV
SS
, and V
REF
pins
open. Connect AV
CC
and V
REF
to V
CC
, and connect AV
SS
to V
SS
.
Output high
voltage
Schmitt
trigger input
voltages
656
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