DS1390U-18 Maxim Integrated Products, DS1390U-18 Datasheet - Page 10

• Manufacturer Part Number: DS1390U-18
• Description: Real Time Clock Low-Voltage SPI RTC with Trickle Charger
• Manufacturer: Maxim Integrated Products

Specifications of DS1390U-18

• Function: Clock, Calendar, Alarm, Trickle Charger
• Supply Voltage (max): 1.89 V
• Supply Voltage (min): 1.71 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: Serial
• Package / Case: uSOP
• Time Format: HH:MM:SS:hh

Low-Voltage SPI/3-Wire RTCs with
Trickle Charger
(V
10
CC
= +3.3V, T
____________________________________________________________________
600
550
500
450
400
350
300
600
550
500
450
400
350
300
250
A
-40
1.3
= +25°C, unless otherwise noted.)
1.7
I
BACKUP
-20
I
2.1
BACKUP
2.5
vs. V
V
TEMPERATURE (°C)
0
BACKUP
2.9
vs. TEMPERATURE
V
BACKUP
BACKUP
3.3 3.7
20
= 3.0V
(V)
, BBSQ1 = 0
40
4.1
V
V
4.5 4.9
CC
CC
60
= 0V
= 0
5.3
80
Typical Operating Characteristics
32768.00
32767.95
32767.90
32767.85
32767.80
1000
950
900
850
800
750
700
650
600
550
500
450
400
350
300
1.3
1.3
1.7
I
1.8
BACKUP
2.1 2.5 2.9 3.3 3.7
OSCILLATOR FREQUENCY
2.3
vs. SUPPLY VOLTAGE
vs. V
2.8
V
SUPPLY (V)
BACKUP
BACKUP
3.3
(V)
3.8
, BBSQ1 = 1
4.1 4.5
4.3
V
CC
= 0V
4.8
4.9
5.3
5.3