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參數(shù)資料
| 型號： | UPD4991A |
| 廠商： | NEC Corp. |
| 英文描述： | 4-BIT PARALLEL I/O CALENDAR CLOCK |
| 中文描述： | 4位并行I / O日歷鐘 |
| 文件頁數(shù)： | 5/32頁 |
| 文件大?。?/td> | 133K |
| 代理商： | UPD4991A |
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μ
PD4991A
5
ABSOLUTE MAXIMUM RATINGS (V
SS
= 0 V)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
V
PP
–0.3 ~ 7.0
V
Input Voltage Range
V
IN
–0.3 ~ V
PP
+ 0.3
V
Output Pin Breakdown Voltage
V
OUT
7.0
V
Low-Level Output Current
(N-ch open-drain)
I
OUT
30
mA
Operating Ambient Temperature
T
opt
–40 ~ +85
°
C
Storage Temperature
T
stg
–65 ~ +125
°
C
ELECTRICAL CHARACTERISTICS
(V
SS
= 0 V, f = 32.768 kHz, C
G
= C
D
= 20 pF, C
i
= 20 k
, T
a
= –40 to +85
°
C)
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
CONDITIONS
Operating Voltage Range
V
DD
2.0
5.5
V
High-level Input Voltage
V
IH
0.7 V
DD
V
DD
V
Low-level Input Voltage
V
IL
V
SS
0.3 V
DD
V
Current Consumption *
I
DD
5
14
μ
A
V
DD
= 3.6 V, V
IN
= V
SS
, T
a
= –40 ~ +70
°
C
Current Consumption *
I
DD
10
μ
A
V
DD
= 3.0 V, V
IN
= V
SS
, T
a
= –40 ~ +70
°
C
Current Consumption *
I
DD
2
6
μ
A
V
DD
= 2.4 V, V
IN
= V
SS
, T
a
= –40 ~ +70
°
C
High-Level Input Leakage Current
I
LIH
+1.0
μ
A
V
DD
= 5.5 V, V
IN
= V
DD
Low-Level Input Leakage Current
I
LIL
–1.0
μ
A
V
DD
= 5.5 V, V
IN
= V
SS
High-Level Output Voltage
V
OH
2.4
V
I
OH
= –1.0 mA
Low-Level Output Voltage
V
OL1
0.4
V
I
OL
= 2.0 mA
Low-Level Output Voltage
V
OL2
0.4
V
I
OL
= 1.0 mA (Nch Open Drain)
High-Level Leakage Current
I
LOH
1.0
μ
A
TP
out
= V
DD
(Nch Open Drain)
* If V
IN
pins are not V
SS
, Current Consumption increase in value.
AC CHARACTERISTICS
Write cycle (Unless otherwise specified, V
DD
= 5 V
±
10 %, T
a
= –40 to +85
°
C)
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
CONDITIONS
Cycle Time
t
WC
150
CS-WE Reset Time
t
CW
120
Address-WE Reset Time
t
AW
120
Address-WE Setup Time
t
AS
0
Write Pulse Width
t
WP
90
ns
Address Hold Time
t
WR
20
Input Data Setup Time
t
DW
50
Input Data Hold Time
t
DH
0
WE-Output Floating Time
t
WHZ
50
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