参数资料
型号: R2051K02
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, QCC12
封装: 2 X 2 MM, 0.85 MM PITCH, ULTRA-COMPACT, FFP, 12 PIN
文件页数: 10/53页
文件大小: 343K
代理商: R2051K02
R2051 Series
12345
Rev.1.04
- 18 -
l
Calendar Counter (Address 4-6h)
Day-of-month Counter (Address 4h)
D7
D6
D5
D4
D3
D2
D1
D0
-
D20
D10
D8
D4
D2
D1
(For Writing)
0
D20
D10
D8
D4
D2
D1
(For Reading)
0
Indefinite
Default Settings *)
Month Counter + Century Bit (Address 5h)
D7
D6
D5
D4
D3
D2
D1
D0
/19
20
-
MO10
MO8
MO4
MO2
MO1
(For Writing)
/19
20
0
MO10
MO8
MO4
MO2
MO1
(For Reading)
Indefinite
0
Indefinite
Default Settings *)
Year Counter (Address 6h)
D7
D6
D5
D4
D3
D2
D1
D0
Y80
Y40
Y20
Y10
Y8
Y4
Y2
Y1
(For Writing)
Y80
Y40
Y20
Y10
Y8
Y4
Y2
Y1
(For Reading)
Indefinite
Default Settings *)
*) Default settings: Default value means read / written values when the PON bit is set to “1” due to VDD
power-on from 0 volts.
*
The calendar counters are configured to display the calendar digits in BCD format by using the
automatic calendar function as follows:
The day-of-month digits (D20 to D1) range from 1 to 31 for January, March, May, July, August, October,
and December; from 1 to 30 for April, June, September, and November; from 1 to 29 for February in leap
years; from 1 to 28 for February in ordinary years. The day-of-month digits are carried to the month
digits in reversion from the last day of the month to 1. The month digits (MO10 to MO1) range from 1 to
12 and are carried to the year digits in reversion from 12 to 1.
The year digits (Y80 to Y1) range from 00 to 99 (00, 04, 08,
…, 92, and 96 in leap years) and are carried
to the /19
20 digits in reversion from 99 to 00.
The /19
20 digits cycle between 0 and 1 in reversion from 99 to 00 in the year digits.
*
Any carry from lower digits with the writing of non-existent calendar data may cause the calendar
counters to malfunction.
Therefore, such incorrect writing should be replaced with the writing of
existent calendar data.
l
Oscillation Adjustment Register (Address 7h)
D7
D6
D5
D4
D3
D2
D1
D0
DEV
F6
F5
F4
F3
F2
F1
F0
(For Writing)
DEV
F6
F5
F4
F3
F2
F1
F0
(For Reading)
0
Default Settings *)
*) Default settings: Default value means read / written values when the PON bit is set to “1” due to VDD
power-on from 0 volts.
DEV bit
When DEV is set to 0, the Oscillation Adjustment Circuit operates 00, 20, 40 seconds.
When DEV is set to 1, the Oscillation Adjustment Circuit operates 00 seconds.
F6 to F0 bits
The Oscillation Adjustment Circuit is configured to change time counts of 1 second on the basis of the
settings of the Oscillation Adjustment Register at the timing set by DEV.
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