Rainbow Electronics DS1372 - Manual (Page 2)

DS1372
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED DC ELECTRICAL CHARACTERISTICS
(V CC = 2.4V to 5.5V, T A = -40°C to +85°C, unless otherwise noted.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Voltage Range on Any Pin Relative to Ground…. .-0.3V to +6.0V
Continuous Power Dissipation (T
A = +70°C)
(derate 4.5mW/°C above +70°C) ……………………. ....360mW
Operating Temperature Range
(noncondensing)……. .......................................-40°C to +85°C
Storage Temperature Range…………………….-55°C to +125°C
Soldering Temperature………….......See IPC/JEDEC J-STD-020
specification.
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating voltage range (Notes 2 and 3) 2.4 5.5
Supply Voltage V CC Timekeeping operating range
(Notes 2 and 4)
1.3 5.5
V
Active Supply Current I CCA (Note 3) 35 90 μA
SQW = 32kHz 600 1300 Standby Current
(Oscillator Enabled)
I CCS
EOSC = 0
(Notes 4 and 5)
SQW = 0 400 800
nA
Data Retention
(Oscillator Disabled)
I DDR
EOSC = 1 (Note 4) 25 100 nA
Input Logic 1
AD0, SCL, SDA
V IH (Note 2)
0.7 x
V CC
V CC +
0.3
V
Input Logic 0
AD0, SCL, SDA
V IL (Note 2) -0.3
0.3 x
V CC
V
Input Leakage
AD0, SCL, SDA, SQW/
INT
I LI SDA, SQW/ INT high impedance -1 +1 μA
V OL = 0.4V (V CC > 2.4V), SDA, SQW/ INT 3
Output Logic 0 I OL
V OL = 0.2V CC (1.3V < V CC < 2.4V), SQW/ INT 0.250
mA
ELECTRICAL CHARACTERISTICS
(V
CC
= 2.4V to 5.5V, T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Fast mode 100 400
SCL Clock Frequency (Note 6) f SCL
Standard mode 0.04 100.00
kHz
Fast mode 1.3 Bus-Free Time Between a STOP
and START Condition
t BUF
Standard mode 4.7
μs
Fast mode 0.6 Hold Time (Repeated) START
Condition (Note 7)
t HD:STA
Standard mode 4.0
μs
Fast mode 1.3
Low Period of SCL Clock t LOW
Standard mode 4.7
μs
Fast mode 0.6
High Period of SCL Clock t
HIGH
Standard mode 4.0
μs
Fast mode 0.6 Setup Time for Repeated START
Condition
t SU:STA
Standard mode 4.7
μs
Fast mode 0 0.9
Data Hold Time (Notes 8 and 9) t HD:DAT
Standard mode 0
μs
I
2
C, 32-Bit, Binary Counter Clock with 64-Bit ID