參數(shù)資料
型號(hào): UPD4990AC-A
元件分類: 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述: 0 TIMER(S), REAL TIME CLOCK, PDIP14
封裝: DIP-14
文件頁數(shù): 46/51頁
文件大?。?/td> 211K
代理商: UPD4990AC-A
45
APPENDIX
PD4990A SPECIFICATION
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
VDD-VSS
7.0
V
Input Voltage
VIN
VSS–0.3 to VDD +0.3
V
Operating Temperature Range
Topt
–40 to +85
°C
Storage Temperature Range
Tstg
–65 to +125
°C
Output Terminal Voltage
VOUT
7.0
V
ELECTRICAL CHARACTERISTICS (f = 32.768 kHz, CG = CD = 20 pF, CI = 20 k
, Ta = 25
°C)
CHARACTERISTIC
SYMBOL
MIN.
TYP.
MAX.
UNIT
TEST CONDITIONS
Operating Voltage
VDD – VSS
2.00
5.50
V
Current Consumption
IDD
820
AVDD – VSS = 3.60 V
100
AVDD – VSS = 5.50 V
Low Level Output Voltage
VOL
0.4*
AVDD – VSS = 2.0 to 5.5 V
IOL = 500
A
CLK Input Frequency
fCLK
DC
500
kHz
VDD – VSS = 2.0 V, Duty 50 %
Input Leakage Current
IIN
1
AVDD – VSS = 5.50 V
High Level Input Voltage
VIH
0.7 VDD
VDD
V
Low Level Input Voltage
VIL
VSS
0.3 VDD
V
* TP and DATA OUT are N-channel open drain output.
A.C. ELECTRICAL CHARACTERISTICS (FOR REFERENCE – NOT SPECIFIED)
(F = 32.768 kHz, VDD – VSS = 2.0 V, Ta = 25
°C)
CHARACTERISTIC
SYMBOL
MIN.
TYP.
MAX.
UNIT
TEST CONDITIONS
C0~2, CS-STB Set-up Time
tSU
1
s
STB Pulse Width
tSTB
1
s
C0~2, CS-STB Hold Time
tHLD
1
s
STB LATCH Delay Time
td1
1**
s
except Time Read mode
CLK-DATA OUT Delay time
td(c-o)
1
sRL = 33 k, CL = 15 pF
DATA IN Set-up Time
tDSU
1
s
DATA IN Hold Time
tDHLD
1
s
** Note:
When a function mode is Time Read mode (other than Test mode), STB LATCH delay time is 20
s MAX.
(td2).
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