RS5C372B-E2-F Просмотр технического описания (PDF) - RICOH Co.,Ltd.

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RS5C372B-E2-F

I2C bus SERIAL INTERFACE REAL-TIME CLOCK ICs

RICOH Co.,Ltd. 

RS5C372A/B

2.3 Clock Counter (at internal address 0-2h)

· Time digit display (in BCD code)

Second digits : Range from 00 to 59 and carried to minute digits when incremented from 59 to 00.

Minute digits : Range from 00 to 59 and carried to hour digits when incremented from 59 to 00.

Hour digits : See descriptions on the 12/24 bit (Section 2.2-1).

Carried to day and day-of-the-week digits when incremented from 11 p.m. to 12 a.m. or 23 to 00.

· Any registered imaginary time should be replaced with correct time as carrying to such registered imaginary time

digits from lower-order ones cause the clock counter malfunction.

2.3-1 Second digit register (at internal address 0h)

D7

D6

D5

D4

D3

D2

D1

D0

—

S40

S20

S10

S8

S4

S2

S1

(For write operation)

0

S40

S20

S10

S8

S4

S2

S1

(For read operation)

0

Undefined Undefined Undefined Undefined Undefined Undefined Undefined Default*

2.3-2 Minute digit register (at internal address 1h)

D7

D6

D5

D4

D3

D2

D1

D0

—

M40

M20

M10

M8

M4

M2

M1

(For write operation)

0

M40

M20

M10

M8

M4

M2

M1

(For read operation)

0

Undefined Undefined Undefined Undefined Undefined Undefined Undefined Default*

2.3-3 Hour digit register (at internal address 2h)

D7

D6

D5

D4

D3

D2

D1

D0

—

—

P/A or H20 H10

H8

H4

H2

H1

(For write operation)

0

0

P/A or H20 H10

H8

H4

H2

H1

(For read operation)

0

0

Undefined Undefined Undefined Undefined Undefined Undefined Default*

*) The default means read value when XSTP bit is set to “1” by starting up from 0V, or supply voltage drop, etc.

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