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2015-12-0001

PT0280-8

12/11/15

13

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

0

1

1

1

0

0

0

1

1

0

0

0

0

0

0

0

1

B7

B0

Day of the Week

Hour

Minute

*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

0

1

0

0

1

1

0

1

0

0

0

0

0

0

0

1

B7

B0

Day of the Week

Hour

Minute

*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.

1Hz

2Hz

4Hz

8Hz

16Hz

SC2

SC3

SC4

B7

B6

B5

B4

B3

B2

B1

B0

R/W

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)

1Hz

2Hz

4Hz

8Hz

16Hz

SC5

SC6

SC7

B7

B6

B5

B4

B3

B2

B1

B0

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)