PT7C43390 Datasheet, PDF (13/38 Pages) Pericom Semiconductor Corporation – Real-time Clock Module

||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
PT7C43390/43390C
Real-time Clock Module
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
(1) 12-hour mode (status register 1 B6 = 0)
Set up 7:00 PM
Data written to INT register 1
Day of the Week _(*1) _(*1) _(*1) _(*1) _(*1) _(*1) _(*1)
0
Hour 1
1
1
0
0
0
1
1
Minute 0
0
0
0
0
0
0
1
B7
B0
*1. Don't care (both of 0 and 1 are acceptable).
(2) 24-hour mode (status register 1 B6 = 1)
Set up 19:00 PM
Data written to INT register 1
Day of the Week _(*1) _(*1) _(*1) _(*1) _(*1) _(*1) _(*1)
0
Hour 1
0
0
1
1
0
1(*2)
1
Minute 0
0
0
0
0
0
0
1
B7
B0
*1. Don't care (both of 0 and 1 are acceptable).
*2. Set up AM / PM flag along with the time setting.
b. INT Register 1 and INT Register 2
 Output of user-set frequency
The INT1 and INT2 registers are 1-byte data registers to set up the output frequency. Setting each bit B7 to B3 in the register to
"1", the frequency which corresponds to the bit is output in the AND-form. SC2 to SC4 in the INT1 register, and SC5 to SC7 in
the INT2 register are 3-bit SRAM type registers that can be freely set by users.
B7
B6
B5
B4
B3
B2
B1
B0
1Hz
2Hz
4Hz
8Hz
16Hz
SC2
SC3
SC4
R/W
B7
1Hz
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W : Read/Write
INT Register 1 (Data Register for Output Frequency)
B6
B5
B4
B3
B2
B1
B0
2Hz
4Hz
8Hz
16Hz
SC5
SC6
SC7
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W : Read/Write
INT Register 2 (Data Register for Output Frequency)
2015-12-0001
PT0280-8 12/11/15
13