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參數(shù)資料
| 型號(hào)： | UPD4990A |
| 廠商： | NEC Corp. |
| 英文描述： | SERIAL I/O CALENDAR & CLOCK CMOS LSI |
| 中文描述： | 串行I / O日歷 |
| 文件頁數(shù)： | 2/20頁 |
| 文件大?。?/td> | 129K |
| 代理商： | UPD4990A |
μ
PD4990A
2
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
Input Voltage
Operating Temperature Range
Storage Temperature Range
Output Terminal Voltage
V
DD
V
SS
V
IN
T
opt
T
stg
V
OUT
0.5 to 7.0
V
SS
0.3 to V
DD
+0.3
40 to +85
65 to +125
0.5 to 7.0
V
V
°
C
°
C
V
ELECTRICAL CHARACTERISTICS (f = 32.768 kHz, C
G
= C
D
= 20 pF, C
I
= 20 k
, T
a
= 25
°
C)
CHARACTERISTIC
SYMBOL
MIN.
TYP.
MAX.
UNIT
TEST CONDITIONS
Operating Voltage
V
DD
V
SS
2.00
5.50
V
8
20
μ
A
V
DD
V
SS
= 3.60 V
Current Consumption
I
DD
100
μ
A
V
DD
V
SS
= 5.50 V
V
DD
V
SS
= 2.0 to 5.5 V
Low Level Output Voltage
V
OL
0.4*
V
I
OL
= 500
μ
A
CLK Input Frequency
f
CLK
DC
500
kHz
V
DD
V
SS
= 2.0 V, Duty 50 %
Input Leakage Current
I
IN
±
1
μ
A
V
DD
V
SS
= 5.50 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
* TP and DATA OUT are N-channel open drain output.
A.C. ELECTRICAL CHARACTERISTICS (f = 32.768 kHz, V
DD
V
SS
= 2.0 V, T
a
= 25
°
C)
CHARACTERISTIC
SYMBOL
MIN.
TYP.
MAX.
UNIT
TEST CONDITIONS
C
0 to 2
, CS
STB Set-up Time
t
SU
1
μ
s
STB Pulse Width
t
STB
1
μ
s
C
0 to 2
, CS
STB Hold Time
t
HLD
1
μ
s
STB LATCH Delay Time
t
d1
1**
μ
s
except Time Read mode
CLK-DATA OUT Delay time
t
d(c-o)
1
μ
s
R
L
= 33 k
, C
L
= 15 pF
DATA IN Set-up Time
t
DSU
1
μ
s
DATA IN Hold Time
t
DHLD
1
μ
s
**
Note:
When a function mode is Time Read mode (other than Test mode), STB LATCH delay time is 20
μ
s MAX.
(t
d2
).
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