DS1554-70 Maxim Integrated Products, DS1554-70 Datasheet - Page 15

• Manufacturer Part Number: DS1554-70
• Description: IC RTC RAM Y2K 5V 70NS 32-EDIP
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/NVSRAM/Y2Kr

Specifications of DS1554-70

• Memory Size: 256K (32K x 8)
• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 32-DIP Module (600 mil), 32-EDIP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

POWER-UP/DOWN CHARACTERISTICS—5V
(V
Figure 8. Power-Up/Down Waveform Timing (5V Device )
Power-Down
V
V
V
V
Expected Data-Retention Time
(Oscillator On)
CE
CC
CC
CC
CC
PF
or
= 5.0V 10%, T
to
Fall Time: V
Fall Time: V
Rise Time: V
WE
RST
PARAMETER
at V
High
IH
, Before
PF(MAX)
PF(MIN)
PF(MIN)
A
to V
= Over the operating range.)
to V
to V
SO
PF(MAX)
PF(MIN)
SYMBOL
t
t
t
t
REC
t
t
DR
PD
FB
R
F
DS1554 256k, Nonvolatile, Y2K-Compliant Timekeeping RAM
15 of 18
(Notes 6, 7)
CONDITIONS
MIN
300
10
40
10
0
0
TYP
MAX
200
UNITS
years
ms
s
s
s
s