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PT7C4337 Datasheet(PDF) 6 Page - List of Unclassifed Manufacturers

Part No. PT7C4337
Description  Real-time Clock Module (I2C Bus)
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Maker  ETC2 [List of Unclassifed Manufacturers]
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PT7C4337 Datasheet(HTML) 6 Page - List of Unclassifed Manufacturers

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PT0205(02/07)
Ver: 1
6
Data Sheet
PT7C4337
Real-time Clock Module (I
2C Bus)
Registers
Allocation of registers
Register definition
Addr.
(hex)*1
Function
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
00
Seconds (00-59)
0
S40
S20
S10
S8
S4
S2
S1
01
Minutes (00-59)
0
M40
M20
M10
M8
M4
M2
M1
02
Hours (00-23 / 01-12)
0
12, /24
H20 or
P, /A
H10
H8
H4
H2
H1
03
Days of the week (01-07)
0
0
0
0
0
W4
W2
W1
04
Dates (01-31)
0
0
D20
D10
D8
D4
D2
D1
05
Months (01-12)
Century
0
0
MO10
MO8
MO4
MO2
MO1
06
Years (00-99)
Y80
Y40
Y20
Y10
Y8
Y4
Y2
Y1
07
Alarm 1: Seconds
A1M1*2
S40
S20
S10
S8
S4
S2
S1
08
Alarm 1: Minutes
A1M2*2
M40
M20
M10
M8
M4
M2
M1
09
Alarm 1: Hours
A1M3*2
12, /24
H20 or
P, /A
H10
H8
H4
H2
H1
0A
Alarm 1: Day, Date
A1M4*2
Day,
/Date
0,
D20
0,
D10
0,
D8
W4,
D4
W2,
D2
W1,
D1
0B
Alarm 2: Minutes
A2M2*3
M40
M20
M10
M8
M4
M2
M1
0C
Alarm 2: Hours
A2M3*3
12, /24
H20 or
P, /A
H10
H8
H4
H2
H1
0D
Alarm 2: Day, Date
A2M4*3
Day,
/Date
0,
D20
0,
D10
0,
D8
W4,
D4
W2,
D2
W1,
D1
0E
Control
/ETIME*4
0
0
RS2*5
RS1*5
INTCN*6 A2IE*7
A1IE*7
0F
Status
OSF*9
0
0
0
0
0
A2F*8
A1F*8
Caution points:
*1. PT7C4337 uses 8 bits for address. For excess 0FH address, PT7C4337 will not respond (no acknowledge signal was given).
*2. Alarm 1 mask bits. Select alarm repeated rate when an alarm occurs.
*3. Alarm 2 mask bits. Select alarm repeated rate when an alarm occurs.
*4. Oscillator and time count chain enable/disable bit.
*5. Square wave output frequency select.
*6. Interrupt output pin select bit.
*7. Alarm 1 and alarm 2 enable bits.
*8. Alarm 1 and alarm 2 flag bits.
*9. Oscillator stop flag.
*10. All bits marked with "0" are read-only bits. Their value when read is always "0".


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