PT7C4311WEX Pericom Semiconductor, PT7C4311WEX Datasheet - Page 11

• 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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a)
b)
•
•
Note:
1. The above steps are an example of transfers of one or two bytes only. There is no limit to the number of bytes transferred
2. 49H, 4AH are used as test mode address. Customer should not use the addresses.
PT0322(08/09)
during actual communications.
Write via I
Read via I
Standard read
Simplified read
Start
Restart
S
Start
Start
Sr
S
S
Slave address + write specification
1
Slave address + write specification
Slave address + read specification
1
1
1
Slave address + read specification
2
Slave address (7 bits)
2
1
C bus
C bus
Slave address (7 bits)
Slave address (7 bits)
Slave address (7 bits)
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
write
0
Read
write
Read
1
0
1
A
A
C
K
A
A
C
K
A
A
C
K
A
A
C
K
Address
Specifies the write start address.
Data is read from the address pointed
by the internal address register and
address auto increment.
bit
Address
Specifies the read start address.
bit
Data is read from the specified start
address and address auto increment.
7
7
bit
bit
6
6
Addr. setting
bit
bit
5
5
Data read (1)
Addr. setting
Data read (1)
bit
bit
4
4
11
bit
bit
3
3
bit
bit
2
2
bit
bit
1
1
bit
bit
0
0
Real-time Clock Module (I
A
A
C
K
A
A
C
K
A
A
C
K
A
A
C
K
bit
Write data
7
bit
Address register auto increment to set
the address for the next data to be
read.
bit
Address auto increment to set the
address for the next data to be read.
7
7
bit
6
bit
bit
6
6
bit
5
bit
bit
5
5
Data read (2)
Data read (2)
bit
4
bit
bit
4
4
bit
3
bit
bit
3
3
bit
2
bit
bit
2
2
bit
1
bit
bit
1
1
bit
0
bit
Data Sheet
bit
0
0
PT7C4311
A
C
K
/A
A
/A
N
O
A
C
K
N
O
A
C
K
2
Stop
Stop
P
C Bus)
Stop
P
P
Ver: 2