PT7C4337A Datasheet, PDF (3/25 Pages) Pericom Semiconductor Corporation – Real-time Clock Module

PT7C4337A/4337AC
Real-time Clock Module (I²C Bus)
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Maximum Ratings
Storage Temperature ............................................................ -65℃ to +150℃
Ambient Temperature with Power Applied ........................... -40℃ to +85℃
Supply Voltage to Ground Potential (V_CC to GND) ............... -0.3V to +6.5V
DC Input (All Other Inputs except Vcc & GND)^{......................................} -0.3V to (Vcc +0.3V)
DC Output Voltage (SDA, /INTA, /INTB pins)........................................-0.3V to +6.5V
DC Output Current (FOUT) ............................................... -0.3V to (Vcc +0.3V)
Power Dissipation .............................................320mW(depend on package)
Note:
Stresses greater than those listed under
MAXIMUM RATINGS may cause permanent
damage to the device. This is a stress rating
only and functional operation of the device at
these or any other conditions above those
indicated in the operational sections of this
specification is not implied. Exposure to
absolute maximum rating conditions for
extended periods may affect reliability.
Operating Mode
The amount of current consumed by the PT7C4337A is determined, in part, by the I²C interface and oscillator operation. The
following table shows the relationship between the operating mode and the corresponding I_CC parameter.
Operating Mode
I²C Interface Active
I²C Interface Inactive
I²C Interface Inactive
I²C Interface Inactive, Oscillator Disabled
V_CC
1.8V ≤ V_CC ≤ 5.5V
1.8V ≤ V_CC ≤ 5.5V
1.2V ≤ V_CC ≤ 1.8V
1.2V ≤ V_CC ≤ 1.8V
Power
I_CC Active (I_CCA)
I_CC Standby (I_CCS)
Timekeeping (I_CCTOSC)
Data Retention (I_CCTDDR)
Recommended Operating Conditions
Part No.
Sym.
Description
PT7C4337A
PT7C4337AC
V_CC
V_CCT
V_OSC
V_IH
V_IL
T_A
V_CC supply voltage
Oscillator start up voltage
Input high level
Input low level
Operating temperature
SCL, SDA
INTA, SQW/INTB
Min
1.8
1.2
1.2
0.7V_CC
-
-0.3
-40
Type
3.3
-
-
-
-
-
-
Max Unit
5.5
1.8
5.5
V
V_CC+0.3
5.5
0.3V_CC
85
ºC
DC Electrical Characteristics
Unless otherwise specified, V_CC = 1.8~5.5V, T_A = -40 °C to +85 °C
Sym.
Item
Pin
Condition
V_CC
V_CCT
V_OSC
V_IL1
V_IH1
V_IL2
V_IH2
I_OL
I_IL
I_OZ
Supply voltage
Oscillator voltage
Low-level input voltage
High-level input voltage
Low-level input voltage
High-level input voltage
Low-level output current
Input leakage current
Output current when OFF
V_CC
V_CC
SCL
SCL
X1
X1
SDA, /INTA, /INTB
SCL
SDA, /INTA, /INTB
Full operation
Timekeeping (Note 5)
V_OL = 0.4V
Min Typ Max Unit
1.8
-
5.5 V
1.2
-
1.8
1.2
-
5.5 V
-0.3
- 0.3V_{CC V}
0.7V_CC - V_CC+0.3
- 0.53 -
V
- 0.53 -
3
-
- mA
-1
-
1 A
-1
-
1 A
2014-10-0002
PT0480-2 11/03/14
3