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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： | 16/32页 |
| 文件大小： | 399K |
| 代理商： | RX-8581NB |
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RX - 8581 SA / JE / NB
Page - 20
ETM13E-02
3) AF (Alarm Flag) bit
When this flag bit value is already set to "0", occurrence of an alarm interrupt event changes it to "1". When this
flag bit value is "1", its value is retained until a "0" is written to it.
AF
Data
Description
0
The AF bit is cleared to zero to prepare for the next status detection
Clearing this bit to zero enables /INT low output to be canceled (/INT remains Hi-Z) when an alarm
interrupt event has occurred.
Write
1
This bit is invalid after a "1" has been written to it.
0
Alarm interrupt events are not detected.
Read
1
Alarm interrupt events are detected.
(Result is retained until this bit is cleared to zero.)
4) AIE (Alarm Interrupt Enable) bit
When an alarm interrupt event occurs (when the AF bit value changes from "0" to "1"), this bit's value specifies
whether an interrupt signal is generated (/INT status changes from Hi-Z to low) or is not generated (/INT status
remains Hi-Z).
AIE
Data
Description
0
1) When an alarm interrupt event occurs, an interrupt signal is not
generated or is canceled (/INT status remains Hi-Z).
2) When an alarm interrupt event occurs, the interrupt signal is canceled
(/INT status changes from low to Hi-Z).
Even when the AIE bit value is "0" another interrupt event may change the /INT status to low
(or may hold /INT = "L").
Write/Read
1
When an alarm interrupt event occurs, an interrupt signal is generated (/INT
status changes from Hi-Z to low).
When an alarm interrupt event occurs, low-level output from the /INT pin occurs only when the
AIE bit value is "1". This value is retained (not automatically cleared) until the AF bit is cleared
to zero.
8.5.2. Examples of alarm settings
1) Example of alarm settings when "Day" has been specified (and WADA bit = "0")
Reg – A
Reg - 9
Reg - 8
Day is specified
WADA bit = "0"
bit
7
AE
bit
6
S
bit
5
F
bit
4
T
bit
3
W
bit
2
T
bit
1
M
bit
0
S
HOUR
Alarm
MIN
Alarm
Monday through Friday, at 7:00 AM
Minute value is ignored
0
011
111
0
07 h
80 h
FF h
Every Saturday and Sunday, for 30 minutes
each hour
Hour value is ignored
0
100
000
1
80 h
FF h
30 h
0
111
1
Every day, at 6:59 AM
1
Χ Χ Χ Χ Χ Χ Χ
18 h
59 h
Χ: Don't care
2) Example of alarm settings when "Day" has been specified (and WADA bit = "1")
Reg - A
Reg - 9
Reg - 8
Day is specified
WADA bit = "1"
bit
7
AE
bit
6
bit
5
20
bit
4
10
bit
3
08
bit
2
04
bit
1
02
bit
0
01
HOUR
Alarm
MIN
Alarm
First of each month, at 7:00 AM
Minute value is ignored
0
000
1
07 h
80 h
FF h
15
th of each month, for 30 minutes each
hour
Hour value is ignored
0
001
010
1
80 h
FF h
30 h
Every day, at 6:59 PM
1
Χ Χ Χ Χ Χ Χ Χ
18 h
59 h
Χ: Don't care
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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