PT7C4339 Datasheet, PDF (8/22 Pages) Pericom Semiconductor Corporation – Real-time Clock Module

PT7C4339/4339C
Real-time Clock Module
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4. Registers
4.1. Allocation of registers
Addr.
(hex) ^*1
Function
Bit 7
Bit 6
Bit 5
Register definition
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)
H20 or
0
12, /24
H10
H8
H4
H2
H1
P, /A
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)
07 Alarm 1: Seconds
08 Alarm 1: Minutes
09 Alarm 1: Hours
0A Alarm 1: Day, Date
0B Alarm 2: Minutes
0C Alarm 2: Hours
0D Alarm 2: Day, Date
0E Control
0F Status
Y80
Y40
Y20
A1M1^*2
S40
S20
A1M2^*2
M40
A1M3^*2
A1M4^*2
A2M2^*3
12, /24
Day,
/Date
M40
A2M3^*3 12, /24
A2M4^*3
/EOSC^*4
Day,
/Date
0
M20
H20 or
P, /A
0,
D20
M20
H20 or
P, /A
0,
D20
BBSQI
OSF^*9
0
0
Y10
S10
M10
H10
0,
D10
M10
H10
0,
D10
RS2^*5
0
Y8
S8
M8
H8
0,
D8
M8
H8
0,
D8
RS1^*5
0
Y4
Y2
Y1
S4
S2
S1
M4
M2
M1
H4
H2
H1
W4,
W2,
W1,
D4
D2
D1
M4
M2
M1
H4
H2
W4,
W2,
D4
D2
INTCN^*6 A2IE^*7
0
A2F^*8
H1
W1,
D1
A1IE^*7
A1F^*8
10 Trickle charger
TCS3 TCS2 TCS1 TCS0
DS1
DS0 ROUT1 ROUT0
Caution points:
*1. PT7C4339 uses 8 bits for address. For excess 10H address, PT7C4339 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 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. Oscillators stop flag.
*10. All bits marked with "0" are read-only bits. Their value when read is always "0".
2015-08-0008
PT0508-1 08/24/15
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