
DS1395/DS1397
020794 12/19
ABSOLUTE MAXIMUM RATINGS*
V
DD
Pin Potential to Ground Pin
Input Voltage
Power Dissipation
Storage Temperature
-0.3V to +7.0V
V
– 0.3 to V
DD
+ 0.3V
500 mW
DS1397: –40
°
C to +70
°
C
DS1395: –55
°
C to +125
°
C
0
°
C to 70
°
C
260
°
C for 10 seconds
Ambient Temperature
Soldering Temperature
* This is a stress rating only and functional operation of the device at these or any other conditions above those
indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods of time may affect reliability.
RECOMMENDED DC OPERATING CONDITIONS
(0
°
C to 70
°
C)
UNITS
NOTES
CHARACTERISTIC
TEST CONDITION
SYM
MIN
MAX
Supply Voltage
V
CC
4.5
5.5
V
Input High Voltage
Recognized as a High Signal Over
Recommended V
DD
and t
A
Range
V
IH
2.2
V
+
0.3
V
V
Input Low Voltage
Recognized as a Low Signal Over
Recommended V
DD
and t
A
Range
V
IL
-0.3
0.8
V
Battery Voltage
V
BAT
2.5
3.5
V
DC ELECTRICAL CHARACTERISTICS
(V
DD
= 5.0V + 10%, V
SS
= 0V, t
A
= 0
°
C to 70
°
C)
SYM
MIN
MAX
CHARACTERISTIC
TEST CONDITION
UNIT
NOTES
Input Leakage
V
IL
=0V, V
IH
=V
DD
For any Single Pin: D0-7, RD, WR,
A0-5, XRAM, RTC, RESET
I
I
+1
μ
A
Output High Voltage
V
DD
=5.0V I
LOAD
=1 mA
V
OH
2.4
V
Output Low Voltage
V
DD
= 5.0V I
LOAD
= 2 mA
V
OL
0.4
V
Power Supply Current
Outputs Unloaded
I
DD
50
mA
STBY pin Input Current
STBY=V
DD
I
STBY
+500
μ
A
STBY pin Input Current
STBY=V
SS
I
STBY
–1
μ
A
AC SWITCHING CHARACTERISTICS
(0
°
C to 70
°
C; V
DD
= 4.5V to 5.5V)
MIN
MAX
CHARACTERISTIC
TEST CONDITION
SYM
UNIT
NOTES
Reset Pulse Width
t
RWL
5
μ
s
Oscillator Startup
From Software Enable Via DV Bits
t
RC
1
s
IRQ Release from RD
High
t
IRDS
2
μ
s
IRQ Release from
RESET Low
t
IRR
2
μ
s