PT7C4337WEX Pericom Semiconductor, PT7C4337WEX Datasheet - Page 8

• Manufacturer Part Number: PT7C4337WEX
• Description: IC REAL TIME CLK/CALENDAR 8-SOIC
• Manufacturer: Pericom Semiconductor
• Type: Clock/Calendar/Alarmr

Specifications of PT7C4337WEX

• Time Format: Binary
• Date Format: Binary
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.8 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
• Memory Size: -
• Other names: PT7C4337WEXTR

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Days of the week Counter
The day counter is a divide-by-7 counter that counts from 01 to 07 and up 07 before starting again from 01. Values that
correspond to the day of week are user defined but must be sequential (i.e., if 1 equals Sunday, then 2 equals Monday, and so on).
Illogical time and date entries result in undefined operation.
Calendar Counter
The data format is BCD format.
•
•
•
*1: The century bit is toggled when the years register overflows from 99 to 00.
PT0205(08/09)
Addr.
(hex)
Addr.
(hex)
03
04
05
06
Day digits: Range from 1 to 31 (for January, March, May, July, August, October and December).
Month digits: Range from 1 to 12 and carried to year digits when cycled to 1.
Year digits: Range from 00 to 99 and 00, 04, 08, … , 92 and 96 are counted as leap years.
Days of the week
Description
(default)
Description
(default)
(default)
(default)
Months
Dates
Years
Range from 1 to 30 (for April, June, September and November).
Range from 1 to 29 (for February in leap years).
Range from 1 to 28 (for February in ordinary years).
Carried to month digits when cycled to 1.
Undefined
Undefined Undefined Undefined Undefined Undefined Undefined Undefined Undefined
D7
Century
0
0
Y80
D7
0
0
*1
D6
0
0
Y40
D6
0
0
0
0
Undefined Undefined Undefined Undefined Undefined Undefined
D5
0
0
D20
Y20
D5
0
0
8
Undefined Undefined Undefined Undefined Undefined
M10
D10
Y10
D4
D4
0
0
Real-time Clock Module (I
M8
D3
D8
Y8
D3
0
0
Undefined Undefined Undefined
M4
D2
D4
Y4
W4
D2
M2
D1
D2
Y2
W2
D1
Data Sheet
PT7C4337
2
C Bus)
M1
W1
D0
D1
Y1
D0
Ver: 4