DS1643-85+ Maxim Integrated Products, DS1643-85+ Datasheet - Page 8

• Manufacturer Part Number: DS1643-85+
• Description: IC RAM TIMEKEEP NV 85NS 28-EDIP
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/NVSRAMr

Specifications of DS1643-85+

• Memory Size: 64K (8K 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: 28-DIP Module (600 mil), 28-EDIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AC CHARACTERISTICS—READ CYCLE
(V
Read Cycle Time
Address Access Time
CE2 Access Time
Output Hold from Address
READ CYCLE TIMING DIAGRAM
CE
CE
CE
OE
OE
OE
CC
and CE2 to DQ Low-Z
Access Time
and CE2 Data Off Time
to DQ Low-Z
Access Time
Data Off Time
= 5.0V 10%, T
PARAMETER
A
= 0C to +70C.)
SYMBOL
t
t
t
t
t
t
t
CE2A
t
t
t
CEA
OEA
CEL
CEZ
OEL
OEZ
AA
OH
RC
8 of 17
MIN
85
5
5
5
ACCESS
85ns
MAX
85
85
95
30
45
30
MIN
100
5
5
5
ACCESS
100ns
MAX
100
100
105
35
55
35
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
DS1643/DS1643P
NOTES
4
4
4
4
4
4
4
4
4
4