DS1558W+ Maxim Integrated Products, DS1558W+ Datasheet - Page 12

• Manufacturer Part Number: DS1558W+
• Description: IC RTC W/NV RAM 3.3V 48-LQFP
• Manufacturer: Maxim Integrated Products
• Type: Watchdog Timer/NVSRAMr

Specifications of DS1558W+

• Time Format: HH:MM:SS (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -

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.
Active Suppl
Active Suppl
TTL Standby, +5V (
TTL Standby, +3.3V (
CMOS Standb
(
CMOS Standby Current, +3.3V
(
Input Leakage Current
(Any Input)
Output Leakage Current
(Any Output)
Output Logic 1 Voltage
(I
Output Logic 0
Voltage
Write Protection Voltage, +5V
Write Protection Voltage, +3.3V
Battery Switchover Voltage, +5V
Battery Switchover Voltage, +3.3V
Battery Curre
Battery Current OSC Off
Output Voltage I
Output Voltage I
Output Voltage I
Nominal Frequency
Series Resistance
Load Capacitance
CE
CE
CC
OUT
= +3.3V ±10% or +5V ±10%, T = -40°C to +85°C.)
V
V
= -1.0mA)
CC
CC
- 0.2V)
- 0.2V)
y Current, +5V
y Current, +3.3V
PARAMETER
nt OSC On
PARAMETER
y Current, +5V
CCO
CCO
CCO
= 70mA, +5V
= 40mA, +3.3V
= 10μA
CE
CE
I
DQ0–DQ7 Outputs
I
Outputs
IRQ
OUT
OUT
= V
= V
= 2.1mA,
= 7.0mA,
/FT and
IH
)
IH
)
RST
*
A
SYMBOL
SYMBOL
I
BACKUP
V
V
V
V
V
ESR
V
I
I
I
I
V
V
I
V
V
12 of 18
I
I
I
C
I
OSC
CC1
CC1
CC2
CC2
CC01
CC01
CC02
f
CC
CC
OL
OL1
OL2
IL
OH
SO
SO
O
PF
PF
L
V
V
V
MIN
MIN
4.20
2.75
2.4
0.3
0.3
0.2
BAT
CC1
CC1
-1
-1
-
-
-
V
32.768
0.031
TYP
V
2.88
4.37
TYP
V
0.3
BAT
BAT
6
4
3
2
2
1
6
PF
-
MAX
MAX
4.50
2.97
100
0.4
0.4
0.5
+1
+1
25
15
6
6
6
2
45
UNITS
UNITS
kHz
mA
mA
mA
mA
mA
mA
A
A
μA
nA
kΩ
pF
V
V
V
V
V
V
V
V
V
V
NOTES
NOTES
2, 3
2, 3
2, 3
2, 3
2, 3
2, 3
1, 5
1, 4
6,7
10
1
1
1
1
1
7