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参数资料
| 型号： | RX-8581NB |
| 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, PDSO22 |
| 封装： | SON-22 |
| 文件页数： | 7/32页 |
| 文件大小： | 399K |
| 代理商： | RX-8581NB |
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RX - 8581 SA / JE / NB
Page - 12
ETM13E-02
8.2.8. Calendar counter (Reg 4 to 6)
Address
Function
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
4
DAY
20
10
8
4
2
1
5
MONTH
10
8
4
2
1
6
YEAR
80
40
20
10
8
4
2
1
) "o" indicates write-protected bits. A zero is always read from these bits.
The auto calendar function updates all dates, months, and years from January 1, 2001 to December 31, 2099.
The data format is BCD format. For example, a date register value of "0011 0001" indicates the 31st.
Note with caution that writing non-existent date data may interfere with normal operation of the calendar counter.
1) Date counter
Address
Function
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
4
DAY
20
10
8
4
2
1
The updating of dates by the date counter varies according to the month setting.
A leap year is set whenever the year value is a multiple of four (such as 04, 08, 12, 88, 92, or 96). In
February of a leap year, the counter counts dates from "01," "02," "03," to "28," "29," "01," etc.
DAY
Month
Date update pattern
1, 3, 5, 7, 8, 10, or 12
01, 02, 03
30, 31, 01
4, 6, 9, or 11
01, 02, 03
30, 01, 02
February in normal year
01, 02, 03
28, 01, 02
Write/Read
February in leap year
01, 02, 03
28, 29, 01
2) Month counter
Address
Function
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
5
MONTH
10
8
4
2
1
The month counter counts from 01 (January), 02 (February), and up to 12 (December), then starts again
at 01 (January).
3) Year counter
Address
Function
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
6
Years
Y80
Y40
Y20
Y10
Y8
Y4
Y2
Y1
The year counter counts from 00, 01, 02 and up to 99, then starts again at 00.
Any year that is a multiple of four (04, 08, 12, 88, 92, 96, etc.) is handled as a leap year.
8.2.9. Alarm registers (Reg - 8
A)
Address
Function
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
8
MIN Alarm
AE
40
20
10
8
4
2
1
9
HOUR Alarm
AE
20
10
8
4
2
1
WEEK Alarm
6
5
4
3
2
1
0
A
DAY Alarm
AE
20
10
8
4
2
1
The alarm interrupt function is used, along with the AEI, AF, and WADA bits, to set alarms for specified date, day,
hour, and minute values.
When the settings in the above alarm registers and the WADA bit match the current time, the /INT pin goes to low
level and "1" is set to the AF bit to report that and alarm interrupt event has occurred.
For details, see "8.5. Alarm Interrupt Function".
8.2.10. Fixed-cycle timer control registers (Reg - B
C)
Address
Function
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
B
Timer Counter 0
128
64
32
16
8
4
2
1
C
Timer Counter 1
2048
1024
512
256
These registers are used to set the preset countdown value for the fixed-cycle timer interrupt function.
The TE, TF, TIE, and TSEL0/1 bits are also used to set the fixed-cycle timer interrupt function.
When the value in the above fixed-cycle timer control register changes from 001h to 000h, the /INT pin goes to
low level and "1" is set to the TF bit to report that a fixed-cycle timer interrupt event has occurred.
For details, see "8.3. Fixed-cycle Timer Interrupt Function".
相关PDF资料 |
PDF描述 |
|---|---|
| RX-8581NBB | REAL TIME CLOCK, PDSO20 |
| S-3510ACFJA-TB | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| S-3510ADFJ | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| S-3510AEFJ | 0 TIMER(S), REAL TIME CLOCK, PDSO8 |
| S-3511AECAG | REAL TIME CLOCK, UUC8 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| RX-8581SA | 制造商:Epson Toyocom Corporation 功能描述:32.768kHz 0.45uA@3V(Typ.) 1.8 to 5.5V 10.1~5.0~3.2mm +85 -40 5}23ppm@+25/3.0V I2C-BusVAC^[tFCX 10.1mm 5mm 3.2mm 制造商:Epson Toyocom 功能描述:RTC module,I2C Bus,High quality,SOP14 |
| RX-8581SA B3 | 制造商:Epson Electronics America Inc 功能描述:Real Time Clock Serial 14-Pin SOP T/R 制造商:Epson 功能描述:Real Time Clock Serial 14-Pin SOP T/R |
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