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參數(shù)資料
| 型號： | UPD4992GS |
| 廠商： | NEC Corp. |
| 英文描述： | 8-Bit Parallel I/O Calendar Clock |
| 中文描述： | 8位并行I / O時(shí)鐘日歷 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 101K |
| 代理商： | UPD4992GS |
μ
PD4992
3
ABSOLUTE MAXIMUM RATINGS
(V
SS
= 0 V)
Item
Symbol
Ratings
Unit
Supply voltage
V
DD
–0.3 to 7.0
V
Input voltage range
V
IN
–0.3 to V
DD
+ 0.3
V
Output pin withstand voltage
V
OUT
7.0
V
Low level output current
(N ch Open Drain)
I
OUT
30
mA
Operating temperature range
T
opt
–40 to +85
°
C
Storage temperature range
T
stg
–65 to +125
°
C
ELECTRICAL CHARACTERISTICS
(V
SS
= 0 V, f = 32.768 kHz, C
G
= C
D
= 20 pF, C
i
= 20k ohms, T
a
= –40 to +85
°
C)
Item
Symbol
Condition
MIN.
TYP.*
MAX.
Unit
Operating voltage range
V
DD
2.4
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
Supply current
I
DD
V
DD
= 5.5 V, V
IN
= V
SS
2
6
μ
A
Supply current
I
DD
V
DD
= 2.4 V, V
IN
= V
SS
0.6
2
μ
A
Input leakage current
I
LI
V
DD
= 5.5 V, V
IN
= V
DD
or V
SS
±
1
×
10
–5
±
1.0
μ
A
High level output voltage
V
OH
I
OH
= –1.0 mA
2.4
4.3
V
Low level output voltage
V
OL1
I
OL
= 2.0 mA
0.1
0.4
V
Low level output voltage
V
OL2
I
OL
= 1.0 mA (N ch Open Drain)
0.4
V
High level leakage current
I
LOH
TP
out
= V
DD
(N ch Open Drain)
4
×
10
–5
1.0
μ
A
*: Ta = +25
°
C
SWITCHING CHARACTERISTICS
WRITE CYCLE
(unless otherwise specified V
DD
= 5 V
±
10 %, T
a
= –40 to +85
°
C)
Item
Symbol
Condition
MIN.
TYP.
MAX.
Unit
Cycle time
t
WC
150
CS-WR reset time
t
CW
120
Address - WR reset time
t
AW
120
Address - WR set up time
t
AS
0
Write pulse width
t
WP
90
ns
Address hold time
t
WR
20
Input data set up time
t
DW
50
Input data hold time
t
DH
0
WR - output floating time
t
WHZ
50
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