
7721 Group User’s Manual
17–82
APPE NDIX
Appendix 11. Electrical characteristics
High-level output
voltage
High-level output
voltage
High-level output
voltage
High-level output
voltage
Low-level output
voltage
Low-level output
voltage
Low-level output
voltage
Low-level output
voltage
Hysteresis
Hysteresis
Hysteresis
High-level input
current
Low-level input
current
RAM hold voltage
Power source current
Electrical characteristics
(V
CC
= 5 V, V
SS
= 0 V, Ta = –20 to 85 °C, f(X
IN
) = 25 MHz, unless otherwise noted)
Symbol
V
OH
Parameter
Test conditions
Unit
2
0.45
1.9
0.43
1.6
0.4
1
0.5
0.3
5
–5
54
1
20
Limits
Typ.
Min.
27
Max.
V
OH
V
OH
V
OH
V
OL
V
OL
V
OL
V
OL
V
T+
–V
T–
V
T+
–V
T–
V
T+
–V
T–
I
IH
I
IL
V
RAM
Icc
A
0
/MA
0
–A
7
/MA
7
, A
8
/D
8
–A
15
/D
15
, A
16
/D
0
–A
23
/D
7
, P4
3
–
P4
7
, P5
0
–P5
7
, P6
0
–P6
7
, P7
0
–P7
7
,
P8
0
–P8
7
, P9
0
–P10
7
,
φ
1
, RESET
OUT
, ST0,
ST1, ALE, BLE, BHE, R/W
A
0
/MA
, A
8
/D
8
–A
15
/D
15
, A
16
7
, MA
8
,
MA
9
, RAS, CAS,
φ
1
, ST0, ST1, BLE, BHE, R/W
ALE
__
A
0
/MA
0
–A
7
/MA
7
, A
8
/D
8
–A
15
/D
15
,
A
16
/D
0
–A
23
/D
7
, P4
3
–P4
7
, P5
0
–P5
7
, P6
0
–P6
7
,
P7
0
–P7
7
, P8
0
–P8
7
, P9
0
–P9
,
φ
1
,
RESET
OUT
, ST0, ST1, ALE, BLE, BHE, R/W
A
0
/MA
0
–A
7
/MA
7
, A
8
/D
8
–A
/D
7
, MA
8
, MA
9
, RAS, CAS,
φ
1
, ST0, ST1,
____ ____
ALE
__
–TA4
, TB0
IN
, TB1
IN
, INT
0
–INT
2
,
AD
TRG
, CTS
0
, CTS
1
, CLK
1
,
DMAREQ0–DMAREQ3, TC
RESET
X
IN
A
8
/D
8
–A
15
/D
15
, A
16
/D
0
–A
23
/D
7
, P4
3
–P4
7
, P5
0
–P5
7
,
P6
0
–P6
7
, P7
0
–P7
7
, P8
P9
0
–P9
7
, P10
0
–P10
7
, RDY, HOLD, BYTE, CNVss,
X
IN
, RESET
A
8
/D
8
–A
15
/D
15
, A
16
/D
0
–A
23
/D
7
, P4
3
–P4
7
, P5
0
–P5
7
,
–P6
0
–P7
7
, P8
0
–P8
7
, P9
0
–P9
0
–P10
7
,
____
_____
RDY, HOLD, BYTE, CNVss, X
IN
, RESET
______
I
OH
= –10 mA
I
OH
= –400
μ
A
I
OH
= –10 mA
I
OH
= –400
μ
A
I
OH
= –10 mA
I
OH
= –400
μ
A
I
OL
= 10 mA
I
OL
= 2 mA
I
OL
= 10 mA
I
OL
= 2 mA
I
OL
= 10 mA
I
OL
= 2 mA
V
I
= 5 V
V
I
= 0 V
When clock is stopped.
f(X
IN
) = 25 MHz (Square
waveform)
Ta = 25 °C (when clock
is stopped)
Ta = 85 °C (when clock
is stopped)
3
4.7
3.1
4.8
3.4
4.8
0.4
0.2
0.1
2
V
V
V
V
V
V
V
V
V
V
V
μ
A
μ
A
V
mA
μ
A
μ
A
A-D CONVERTER CHARACTERISTICS
(V
CC
= 5 V, V
SS
= 0 V, Ta = –20 to 85 °C, f(X
IN
) = 25 MHz, unless otherwise noted)
Unit
Test conditions
V
REF
= V
CC
V
REF
= V
CC
V
REF
= V
CC
Bits
LSB
k
μs
V
V
Symbol
—
—
R
LADDER
t
CONV
V
REF
V
IA
Parameter
Resolution
Absolute accuracy
Ladder resistance
Conversion time
Reference voltage
Analog input voltage
Min.
2
9.12
2
0
Max.
8
±3
10
V
CC
V
REF
Typ.
Limits