RS5C372A Просмотр технического описания (PDF) - RICOH Co.,Ltd.
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RS5C372A Datasheet PDF : 59 Pages
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RS5C372A/B
2.4 Day-of-the-week Counter (at internal address 3h)
· Day-of-the-week digits are incremented by 1 when carried to 1-day digits.
· Day-of-the-week digits display (incremented in septimal notation):
(W4, W2, W1)=(0,0,0)→(0,0,1)→ .... →(1,1,0)→(0,0,0)
· The relation between days of the week and day-of-the-week digits is user changeable (e.g. Sunday=0,0,0).
· The (W4, W2, W1) should not be set to (1, 1, 1).
D7
D6
D5
D4
D3
D2
D1
D0
—
—
—
—
—
W4
W2
W1
(For write operation)
0
0
0
0
0
W4
W2
W1
(For read operation)
0
0
0
0
0
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.
2.5 Calendar Counter (at internal address 4 to 6h)
· The automatic calendar function provides the following calendar digit displays in BCD code.
Day digits : Range from 1 to 31 (for January, March, May, July, August, October, and December).
Range from 1 to 30 (for April, June, September, and November).
Range from 1 to 29 (for February in leap years).
Range from 1 to 28 (for February in ordinary years).
Carried to month digits when cycled to 1.
Month digits : Range from 1 to 12 and carried to year digits when cycled to 1.
Year digits : Range from 00 to 99 and 00, 04, 08,..., 92, and 96 are counted as leap years.
· 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.
2.5-1 Day digit register (at internal address 4h)
D7
D6
D5
D4
D3
D2
D1
D0
—
—
D20
D10
D8
D4
D2
D1
(For write operation)
0
0
D20
D10
D8
D4
D2
D1
(For read operation)
0
0
Undefined Undefined Undefined Undefined Undefined Undefined Default*
2.5-2 Month digit register (at internal address 5h)
D7
D6
D5
D4
D3
D2
D1
D0
—
—
—
MO10
MO8
MO4
MO2
MO1 (For write operation)
0
0
0
MO10
MO8
MO4
MO2
MO1 (For read operation)
0
0
0
Undefined Undefined Undefined Undefined Undefined Default*
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