RS5C316A Просмотр технического описания (PDF) - RICOH Co.,Ltd.
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RS5C316A Datasheet PDF : 38 Pages
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3. Counters
3.1 Clock counter (BANK 0, at 0h-5h)
D3
D2
D1
D0
S8
S4
S2
S1 (For read/write) 1-second time digit (at 0h)
*
S40
S20
S10 (For read/write) 10-second time digit (at 1h)
M8
M4
M2
M1 (For read/write) 1-minute time digit (at 2h)
*
M40
M20
M10 (For read/write) 10-minute time digit (at 3h)
H8
H4
H2
H1 (For read/write) 1-hour time digit
(at 4h)
*
* P/A or H20 H10 (For read/write) 10-hour time digit
(at 5h)
RS5C316A/B
* * 1) The “ ” mark indicates data which are set to 0 for read cycle and not set for write cycle.
*2) Any carry to 1-second digits from the second counter is disabled when the WTEN bit (of the control register 1) is set to 0.
*3) Time digit display (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 : Range as shown in the section on the 12/24 bit and carried to day and day-of-the-week digits when incremented from 11 p.m. to 12
a.m. or 23 to 00.
*4) Any registered imaginary time should be replaced with actual time as carrying to such registered imaginary time digits from lower-order ones cause
the clock counter to malfunction.
3.2 Day-of-the-week counter (BANK 0, at 6h)
D3
D2
D1
D0
*
W4
W2
W1 (For read/write) Day-of-the-week counter
* * 1) The “ ” mark indicates data which are set to 0 for read cycle and not set for write cycle.
*2) Day-of-the-week digits are incremented by 1 when carried to 1-day digits.
*3) Day-of-the-week digits display (incremented in septimal notation):
(W4, W2, W1)=(000) → (001) → ····· → (110) → (000)
The relation between days of the week and day-of-the-week digits is user changeable (e.g. Sunday=000).
*4) The (W4, W2, W1) should not be set to (111).
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