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参数资料
| 型号： | RS5C321B-E1 |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| 封装： | 0.65 MM PITCH, SSOP-8 |
| 文件页数： | 7/33页 |
| 文件大小： | 286K |
| 代理商： | RS5C321B-E1 |
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RS5C321A/B
11
2.3 32kHz clock pulse Control Register (BANK1, at Ah)
D3
D2
D1
D0
*
CLEN
(For read/write operation)
*1) The “*” mark indicates data which are set to 0 for read cycle and not written for write cycle.
*2) (CLEN)
32kHz clock pulse control bit
When the CLEN bit is set to 0, 32.768kHz clock pulse is output from 32KOUT pin.
When the CLEN bit is set to 1, 32KOUT pin is high impedance.
The CLEN bit is set to 0 when the XSTP=1 (Oscillator halt sensing).
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).
3.2 Day-of-the-week counter (BANK 0, at 6h)
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)
3. Counters
3.1 Clock counter (BANK 0, at 0h-5h)
*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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| RS5C338A | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION |
| RS5C338A-E2 | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:3-WIRE SERIAL INTERFACE REAL-TIME CLOCK ICs WITH VOLTAGE MONITORING FUNCTION |
| RS5C348A | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:4-WIRE SERIAL INTERFACE |
| RS5C348A-E2 | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:Real-Time Clock |
| RS5C348B | 制造商:RICOH 制造商全称:RICOH electronics devices division 功能描述:4-WIRE SERIAL INTERFACE |
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