PT7C4337WEX Pericom Semiconductor, PT7C4337WEX Datasheet - Page 16

• 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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2) Read via I
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.
PT0205(08/09)
a)
b)
during actual communications.
Restart
Standard read
Simplified read
Start
Start
Sr
S
S
Slave address + write specification
Slave address + read specification
2
1
1
1
Slave address + read specification
C bus
Slave address (7 bits)
Slave address (7 bits)
Slave address (7 bits)
1
1
1
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
Read
write
Read
1
0
1
A
A
C
K
A
A
C
K
A
A
C
K
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
bit
bit
5
5
Data read (1)
Addr. setting
Data read (1)
bit
bit
4
4
16
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
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
bit
6
6
bit
bit
5
5
Data read (2)
Data read (2)
bit
bit
4
4
bit
bit
3
3
bit
bit
2
2
bit
bit
1
1
bit
Data Sheet
bit
0
0
PT7C4337
/A
/A
N
O
A
C
K
N
O
A
C
K
2
Stop
C Bus)
Stop
P
P
Ver: 4