DS1556-70IND Maxim Integrated Products, DS1556-70IND Datasheet - Page 13

• Manufacturer Part Number: DS1556-70IND
• Description: Real Time Clock
• Manufacturer: Maxim Integrated Products

Specifications of DS1556-70IND

• Function: Clock, Calendar, NV Timekeeping RAM, Watchdog Timekeeper
• Rtc Memory Size: 131072 B
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: Through Hole
• Rtc Bus Interface: Parallel
• Package / Case: eDIP
• Time Format: HH:MM:SS
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AC CHARACTERISTICS—READ CYCLE
(Over the Operating Range)
AC CHARACTERISTICS—WRITE CYCLE
(Over the Operating Range)
Read Cycle Time
Address Access Time
CE to DQ Low-Z
CE Access Time
CE Data Off Time
OE to DQ Low-Z
OE Access Time
OE Data Off Time
Output Hold from Address
Write Cycle Time
Address Access Time
WE Pulse Width
CE Pulse Width
Data Setup Time
Data Hold Time (Note 9)
Data Hold Time (Note 10)
Address Hold Time (Note 9)
Address Hold Time
(Note 10)
WE Data Off Time
Write Recovery Time
PARAMETER
PARAMETER
SYMBOL
SYMBOL
t
t
t
t
t
t
t
t
t
t
t
t
t
t
WEW
t
t
t
t
t
CEW
t
WEZ
CEA
OEL
OEA
OEZ
DH1
DH2
AH1
AH2
CEL
CEZ
AA
OH
WC
WR
RC
AS
DS
MIN
MIN
V
V
70
70
50
60
30
5
5
5
0
5
5
5
5
5
CC
CC
13 of 18
DS1556 1M, Nonvolatile, Y2K-Compliant Timekeeping RAM
= 5.0V 10%
= 5.0V 10%
MAX
MAX
70
70
25
35
25
25
V
V
MIN
MIN
CC
CC
120
100
110
120
80
10
0
5
5
0
5
5
5
5
= 3.3V 10%
= 3.3V 10%
MAX
MAX
120
120
100
40
35
40
UNITS
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns