DS1556-70+ Maxim Integrated Products, DS1556-70+ Datasheet - Page 15

• Manufacturer Part Number: DS1556-70+
• Description: IC RTC RAM Y2K 5V 70NS 32-EDIP
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/NVSRAM/Y2Kr

Specifications of DS1556-70+

• Memory Size: 1M (128K 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: Lead free / RoHS Compliant

POWER-UP/DOWN CHARACTERISTICS—5V
(V
Figure 8. Power-Up/Down Waveform Timing (5V Device)
CE or WE at V
Power-Down
V
V
V
V
Expected Data-Retention Time
(Oscillator On)
CC
CC
CC
CC
PF
= 5.0V 10%, Over the Operating Range.)
to RST High
Fall Time: V
Fall Time: V
Rise Time: V
PARAMETER
IH
, Before
PF(MAX)
PF(MIN)
PF(MIN)
to V
to V
to V
SO
PF(MAX)
PF(MIN)
SYMBOL
t
t
t
t
REC
t
t
DR
PD
FB
R
F
15 of 18
DS1556 1M, Nonvolatile, Y2K-Compliant Timekeeping RAM
(Notes 6, 7)
CONDITIONS
MIN
300
10
40
10
0
0
TYP
MAX
200
UNITS
years
ms
s
s
s
s