PT7C4302_15 Datasheet, PDF (2/14 Pages) Pericom Semiconductor Corporation – Real-time Clock Module (3-wire Interface)

PT7C4302
Real-time Clock Module (3-wire Interface)
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Function Block
X1
32.768
kHz
X2
VCC2
VCC1
C_D
OSC
C_G
Counter
Chain
Power Manager
PT7C4302
Time Counter
(Sec,Min,Hour,Day,Date,Month,Year)
31 x 8
RAM
Address
Decoder
Address
Register
Shift Registers
I /O
Interface
(3-wires)
SCLK
RST
I/O
Note: C_D=C_G=11pF
Maximum Ratings
Storage Temperature…………………………………...-65℃ to +150℃
Ambient Temperature with Power Applied......................-40℃ to +85℃
Supply Voltage to Ground Potential (Vcc to GND) ……………..-0.3V to +6.5V
DC Input (All Other Inputs except Vcc & GND)………………..-0.3V to +6.5V
DC Output Voltage (SDA, /INTA, /INTB pins)………………...-0.3V to +6.5V
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.
Recommended Operating Conditions
Symbol
V_CC1
V_CC2
V_IH
V_IL
T_A
Description
Backup power voltage
Timing data and RAM data maintaining voltage
Timing data writing voltage
Timing data reading voltage
RAM data writing voltage
RAM data reading voltage
Input high level
Input low level
Operating temperature
2015-11-0004
2
Min
Type
Max
Unit
1.5
-
5.5
1.2
-
5.5
1.5
-
5.5
1.5
-
5.5
3.0
-
5.5
V
1.5
-
5.5
2
-
V_CC+0.3
-0.3
-
0.3
-40
-
85
ºC
PT0225-6 11/25/15