Datasheet

I
2
C RTC/Supervisor with Trickle Charger
and 512 Bytes EEPROM
Maxim Integrated 3
DS1388
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= V
CC(MIN)
to V
CC(MAX)
, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
CC
> 2V; V
OL
= 0.4V 3.0
1.8V < V
CC
< 2V; V
OL
= 0.2 x V
CC
3.0
mA
RST Logic 0 Output I
OLSIR
1.3V < V
CC
< 1.8V; V
OL
= 0.2 x V
CC
250 μA
DS1388Z-5 600
DS1388Z-33 250
V
CC
Active Current, EEPROM
Read, I
2
C Read/Write Access
I
CCER
(Note 9)
DS1388Z-3 225
μA
DS1388Z-5 1.0
DS1388Z-33 0.70
V
CC
Active Current, EEPROM
Write Cycle
I
CCEW
(Note 9)
DS1388Z-3 0.65
mA
DS1388Z-5 270
DS1388Z-33 100 150
V
CC
Standby Current I
CCS
(Note 10)
DS1388Z-3 140
μA
V
BACKUP
Leakage Current
(V
BACKUP
= 3.7V,
V
CC
= V
CC(MAX)
)
I
BACKUPLKG
15 100 nA
T
A
= +25°C (guaranteed by design) 200k
EEPROM Write/Erase Cycles t
WR
T
A
= -40°C to +85°C (guaranteed by
design)
50k
Cycles
DC ELECTRICAL CHARACTERISTICS
(V
CC
= 0V, V
BACKUP
= 3.7V, T
A
= +25°C, unless otherwise noted.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
BACKUP
Current, OSC On
(EOSC = 0), SDA = SCL = 0V
I
BACKUP
(Note 11) 410 550 nA
V
BACKUP
Current, OSC Off
(EOSC = 1), SDA = SCL = 0V
(Data Retention)
I
BACKUPDR
(Note 11) 10 100 nA