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參數(shù)資料
| 型號： | RX-4045NBAA |
| 元件分類： | XO, clock |
| 英文描述： | REAL TIME CLOCK, PDSO22 |
| 封裝： | ROHS COMPLIANT, SON-22 |
| 文件頁數(shù)： | 11/37頁 |
| 文件大?。?/td> | 554K |
| 代理商： | RX-4045NBAA |
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RX - 4045 SA / NB
Page - 16
MQ442-01
8.4. Periodic Interrupt Function
Periodic interrupt output can be obtained via the /INT pin.
Select among five periodic-cycle settings: 2 Hz (once per 0.5 seconds), 1 Hz (once per second), 1/60 Hz (once
per minute), 1/3600 Hz (once per hour), or monthly (on the 1
st of each month).
Select among two output waveforms for periodic interrupts: an ordinary pulse waveform (2 Hz or 1 Hz) or a
waveform (every second, minute, hour, or month) for CPU-level interrupts that can support CPU interrupts.
A polling function is also provided to enable monitoring of pin states via registers.
8.4.1. Related registers
Address
Function
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
E
Control 1
WALE
DALE
/12 , 24
/CLEN2
TEST
CT2
CT1
CT0
(Default)
(0)
(0)
F
Control 2
VDSL
VDET
/ XST
PON
/CLEN1
CTFG
WAFG
DAFG
(Default)
(0)
(
)
(1)
(0)
(0)
(0)
1) The default value is the value that is read (or is set internally) after the PON bit has been set to "1," such as after powering up from 0 V or
recovering from a supply voltage drop.
2) "" indicates undefined status.
1) CTFG bit
During a read operation, this bit indicates the /INT pin's periodic interrupt output status.
This status can be set as OFF by writing a "0" to this bit when /INT = " L". .
CTFG
Data
Description
0
A "0" can be written only when the periodic interrupt is in level
mode, at which time the /INT pin is set to OFF (Hi-z) status. (Only
when Alarm_D does not match)
After a "0" is written, the value still becomes "1" again at the
next cycle.
Default
Write
1
Setting prohibited (do not set this bit value, even though it has no
effect)
0
periodic interrupt output OFF status; /INT = OFF (Hi-z)
Default
Read
1
Periodic interrupt output ON status; /INT = "L"
2) CT2, CT1, CT0 bit
Combinations of these three bits are used to change the /INT pin's output status.
/INT pin's output setting
CT2
CT1
CT0
Waveform mode
Cycle / Fall timing
0
/INT = Hi-z (= OFF)
Default
0
1
/INT = Fixed low
0
1
0
Pulse mode 1)
2 Hz
(50% duty)
0
1
Pulse mode 1)
1 Hz
(50% duty)
1
0
Level mode 2)
Once per
second
(Synchronous with per-second
count-up)
1
0
1
Level mode 2)
Once per
minute
(Occurs when seconds reach ":00")
1
0
Level mode 2)
Once per hour
(Occurs when minutes and seconds
reach "00:00")
1
Level mode 2)
Once per
month
(Occurs at 00:00:00 on first day of
month)
The /INT pin goes low ("L") when the Alarm_D function operates, but you can prevent that effect by setting
"0" for CT2, CT1, and CT0 to stop this function.
See the next page's description of pulse mode/level mode waveforms.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RX-4045SA | 制造商:EPSON 制造商全稱:EPSON 功能描述:4-wire serial interface high-stability RTC module |
| RX-4045SA,(AA) | 制造商:Epson Toyocom 功能描述:Serial Interface RTC SOP 14pin |
| RX-4045SAAA | 制造商:Epson Toyocom Corporation 功能描述:Cut Tape 制造商:Epson Toyocom Corporation 功能描述:RTC HI STABILITY SERIAL SMD SOP14 制造商:Epson Toyocom Corporation 功能描述:RTC HI STABILITY SERIAL, SMD, SOP14 制造商:Epson Toyocom Corporation 功能描述:RTC HI STABILITY SERIAL, SMD, SOP14; Date Format:YYYY:MM:DD:Hr:Min:Secs; Clock Format:12Hr / 24Hr; Clock IC Type:RTC; Supply Voltage Min:1.7V; Supply Voltage Max:5.5V; Digital IC Case Style:SOP; No. of Pins:14; Interface Type:Serial;;RoHS Compliant: Yes |
| RX-409 | 功能描述:烙鐵 SOLDERING TIP RoHS:否 制造商:Weller 產(chǎn)品:Soldering Stations 類型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大溫度:+ 850 F 電纜類型:US Cord Included |
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