PT7C4311WEX Pericom Semiconductor, PT7C4311WEX Datasheet - Page 4

• Manufacturer Part Number: PT7C4311WEX
• Description: IC REAL TIME CLK/CALENDAR 8-SOIC
• Manufacturer: Pericom Semiconductor
• Type: Clock/Calendarr

Specifications of PT7C4311WEX

• Memory Size: 56B
• Time Format: Binary
• Date Format: Binary
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.2 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PT7C4311WEXTR

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Function Description
Overview of Functions
1.
CPU can read or write data including the year (last two digits), month, date, day, hour, minute, and second. Any (two-digit) year
that is a multiple of 4 is treated as a leap year and calculated automatically as such until the year 2100.
2.
2-wire I
device terminates an access in progress and resets the device address counter. Inputs to the device will not be recognized at this
time to prevent erroneous data from being written to the device from an out of tolerance system. When V
device automatically switches from battery to V
3.
Oscillator and time count chain can be enabled or disabled at the same time by ST
4.
With the calibration bits properly set, accuracy PT7C4311 can be improved to better than ±2 ppm at 25°C.
PT0322(08/09)
Clock function
Interface with CPU
Oscillator enable/disable
Calibration function
2
C interface. The PT7C4311 continually monitors V
CC
at V
SO
and recognizes inputs.
CC
for an out of tolerance condition. Should V
4
Real-time Clock Module (I
bit.
CC
CC
falls below V
fall below V
Data Sheet
PT7C4311
2
C Bus)
Ver: 2
SO
SO
, the
, the