DS1501YSN+ Maxim Integrated, DS1501YSN+ Datasheet - Page 3

• Manufacturer Part Number: DS1501YSN+
• Description: Real Time Clock
• Manufacturer: Maxim Integrated
• Series: DS1501, DS1511r

Specifications of DS1501YSN+

• Rohs: yes
• Function: Clock, Calendar, Alarm, Watchdog Timekeeper
• Rtc Bus Interface: Parallel
• Time Format: HH
• Rtc Memory Size: 256 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: SMD/SMT
• Package / Case: SOIC-28

DC ELECTRICAL CHARACTERISTICS
(V
CRYSTAL SPECIFICATIONS*
*The crystal, traces, and crystal input pins should be isolated from RF generating signals. Refer to Application Note 58: Crystal Considerations
for Dallas Real-Time Clocks for additional specifications.
AC OPERATING CHARACTERISTICS
(V
Battery Current, BB32 = 0, EOSC = 0
Battery Current, BB32 = 0, EOSC = 1
V
Nominal Frequency
Series Resistance
Load Capacitance
Read Cycle Time
Address Access Time
CE to DQ Low-Z
CE Access Time
CE Data-Off Time
OE to DQ Low-Z (0°C to +85°C)
OE to DQ Low-Z (-40°C to 0°C)
OE Access Time
OE Data-Off Time
Output Hold from Address
Write Cycle Time
Address Setup Time
WE Pulse Width
CE Pulse Width
Data Setup Time
Data Hold Time
Address Hold Time
WE Data-Off Time
Write Recovery Time
Pulse Width, OE, WE, or CE High
Pulse Width, OE, WE, or CE Low
CC
CC
BAUX
= 0V; T
= 5V ±10%, T
Current BB32 = 1, SQW Open
A
PARAMETER
= 0°C to +70°C; V
PARAMETER
PARAMETER
A
= 0°C to +70°C; V
CC
= 0V, T
CC
= 5V ±10%, T
A
SYMBOL
= -40°C to +85°C.)
PW
PW
SYMBOL
SYMBOL
t
t
t
t
t
t
t
t
t
t
t
WEW
t
t
CEW
t
t
t
t
t
t
WEZ
CEA
CEZ
OEL
OEL
OEA
OEZ
CEL
WC
WR
OH
RC
AA
AS
DS
DH
AH
I
ESR
I
I
HIGH
BAUX
LOW
BAT1
BAT2
C
f
O
L
3 of 22
A
= -40°C to +85°C.)
(Note 7)
(Note 7)
(Note 7)
(Note 8)
(Note 8)
(Note 8)
(Note 8)
(Note 8)
(Note 8)
CONDITIONS
CONDITIONS
CONDITIONS
DS1501/DS1511 Y2KC Watchdog Real-Time Clocks
MIN
MIN
MIN
70
70
50
55
30
15
20
70
5
5
2
5
0
5
0
32.768
6/12.5
TYP
TYP
TYP
0.27
0.01
2
MAX
70
70
25
35
25
25
MAX
MAX
1.0
0.1
45
UNITS
UNITS
UNITS
kHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
μA
μA
μA
kΩ
pF