DS1388 Maxim, DS1388 Datasheet - Page 7

• Manufacturer Part Number: DS1388
• Description: The DS1388 I²C real-time clock (RTC), supervisor, and EEPROM is a multifunction device that provides a clock/calendar, programmable watchdog timer, power-supply monitor with reset, and 512 bytes of EEPROM
• Manufacturer: Maxim

(V
CC
= +3.3V, T
32768.45
32768.40
32768.35
32768.30
32768.25
32768.20
32768.15
32768.10
32768.05
32768.00
500
450
400
350
300
250
A
1.3
1.3
= +25°C, unless otherwise noted.)
I
BACKUP
V
1.7
CC
I
1.8
2
= 0V
2.1
OSCILLATOR FREQUENCY
2.3 2.8
vs. SUPPLY VOLTAGE
C RTC/Supervisor with Trickle Charger
SUPPLY CURRENT VOLTAGE
2.5
vs. V
2.9
V
SUPPLY (V)
BACKUP
3.3
3.3
BACKUP
3.7
(V)
3.8 4.3
4.1
4.5
_____________________________________________________________________
4.8
4.9
5.3
5.3
and 512 Bytes EEPROM
Typical Operating Characteristics
10,000
1000
600
550
500
450
400
350
300
250
100
10
0.01
-40
I
BACKUP
-25
V
CC
10
0.1
SUPPLY CURRENT VOLTAGE
FALLING vs. RST DELAY
vs. TEMPERATURE
V
TEMPERATURE (°C)
CC
5
FALLING (V/ms)
V
20
CC
1
= V
35
PF
V
BACKUP
+ 0.1V TO 0V
50
10
= 3V
65
80
100
7