DS1646P-120 Maxim Integrated Products, DS1646P-120 Datasheet - Page 8

• Manufacturer Part Number: DS1646P-120
• Description: Real Time Clock
• Manufacturer: Maxim Integrated Products

Specifications of DS1646P-120

• Function: Clock, Calendar, NV Timekeeping RAM
• Rtc Memory Size: 131072 B
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Rtc Bus Interface: Parallel
• Package / Case: PowerCap
• Time Format: HH:MM:SS
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AC ELECTRICAL CHARACTERISTICS
AC TEST CONDITIONS
Input Levels:
Transition Times:
CAPACITANCE
AC ELECTRICAL CHARACTERISTICS
(POWER-UP/DOWN TIMING)
PARAMETER
Read Cycle Time
Address Access Time
Output Enable Access Time
Output Enable Data Off Time
Output Enable to DQ Low-Z
Output Hold from Address
Write Cycle Time
Address Setup Time
Address Hold from End of Write
Write Pulse Width
Data Setup Time
Data Hold Time High
PARAMETER
Capacitance on All Pins (except DQ)
Capacitance on DQ Pins
PARAMETER
V
V
V
V
Power-Up
Expected Data Retention Time
(Oscillator On)
CE
CE
CE
CE
CE
WE
WE
PF
PF
SO
PF
Access Time
Data Off Time
to DQ Low-Z
Pulse Width
or
(Max) to V
(Min) to V
(Min) to V
to V
Data Off Time
or
WE
CE
PF
(Min) V
Inactive Time
at V
SO
PF
PF
IH
(Max) V
V
(Min) V
before Power-Down
CC
CC
0V to 3V
5 ns
Fall Time
Rise Time
CC
CC
Fall Time
Rise Time
SYMBOL
SYMBOL
SYMBOL
t
t
t
t
t
t
t
t
t
t
t
C
t
t
t
t
t
WEW
t
t
t
CEW
t
t
t
WEZ
t
t
t
CEA
OEA
OEZ
OEL
AH1
AH2
DH1
DH2
REC
CEZ
CEL
C
WC
WR
t
AA
OH
t
DR
RC
AS
DS
PD
FB
RB
DQ
R
F
I
8 of 12
MIN
MIN
MIN
120
120
100
300
30
75
10
85
25
10
15
10
5
5
5
0
5
0
0
1
0
TYP
TYP
TYP
(Over the Operating Range)
(Over the Operating Range)
MAX
MAX
MAX
120
120
100
40
40
40
10
35
7
UNITS
UNITS
UNITS
years
ms
pF
pF
µs
µs
µs
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
(T
DS1646/DS1646P
A
= +25°C)
NOTES
NOTES
NOTES
5
6
5
6
4