English
Language : 

ISL12028_1011 Datasheet, PDF (5/29 Pages) Intersil Corporation – Real Time Clock/Calendar with I2C Bus™ and EEPROM
◁
ISL12028, ISL12028A
Electrical Specifications Boldface limits apply over the operating temperature range, -40°C to +85°C. (Continued)
SYMBOL
PARAMETER
CONDITIONS
MIN
(Note 16)
TYP
MAX
(Note 16)
UNIT
RESET OUTPUT
ILO
Output Leakage Current
VOL Output Low Voltage
VDD = 5.5V
VOUT = 5.5V
VDD = 5.5V
IOL = 3mA
VDD = 2.7V
IOL = 1mA
100
400
nA
0.4
V
0.4
V
NOTES
Watchdog Timer/Low Voltage Reset Parameters Boldface limits apply over the operating temperature range, -40°C to +85°C.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
(Note 16) (Note 5) (Note 16)
UNITS NOTES
tRPD
tPURST
VRVALID
VRESET
VDD Detect to RESET LOW
Power-Up Reset Time-Out Delay
Minimum VDD for Valid RESET
Output
ISL12028-4.5A Reset Voltage
Level
500
100
250
400
1.0
4.59
4.64
4.69
ns
13
ms
V
V
ISL12028 Reset Voltage Level
4.33
4.38
4.43
V
ISL12028-3 Reset Voltage Level
3.04
3.09
3.14
V
ISL12028-2.7A Reset Voltage
Level
2.87
2.92
2.97
V
ISL12028-2.7 Reset Voltage Level
2.58
2.63
2.68
V
tWDO Watchdog Timer Period
32.768kHz crystal between X1 and
1.70
1.75
1.801
s
X2
725
750
775
ms
225
250
275
ms
tRST Watchdog Timer Reset Time-Out 32.768kHz crystal between X1 and
225
250
275
ms
Delay
X2
tRSP
I2C Interface Minimum Restart
Time
1.2
µs
EEPROM SPECIFICATIONS
EEPROM Endurance
EEPROM Retention
Temperature ≤ +75°C
>2,000,000
50
Cycles
Years
Serial Interface (I2C) Specifications Boldface limits apply over the operating temperature range, -40°C to +85°C.
SYMBOL
PARAMETER
VIL
SDA, and SCL Input Buffer LOW
Voltage
VIH
SDA, and SCL Input Buffer HIGH
Voltage
Hysteresis SDA and SCL Input Buffer
Hysteresis
VOL SDA Output Buffer LOW Voltage
ILI
Input Leakage Current on SCL
ILO
I/O Leakage Current on SDA
TIMING CHARACTERISTICS
fSCL
tIN
SCL Frequency
Pulse width Suppression Time at
SDA and SCL Inputs
CONDITIONS
SBIB = 1 (Under VDD mode)
SBIB = 1 (Under VDD mode)
SBIB = 1 (Under VDD mode)
IOL = 4mA
VIN = 5.5V
VIN = 5.5V
Any pulse narrower than the max spec
is suppressed.
MIN
(Note 16)
-0.3
0.7 x VDD
0.05 x VDD
0
MAX
TYP (Note 16) UNITS NOTES
0.3 x VDD
V
VDD + 0.3
V
V
0.4
V
0.1
10
µA
0.1
10
µA
400
kHz
50
ns
5
FN8233.9
November 30, 2010
 ▷