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参数资料
| 型号： | RX-4591CF |
| 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, PDSO10 |
| 封装： | SON-10 |
| 文件页数： | 6/19页 |
| 文件大小： | 256K |
| 代理商： | RX-4591CF |
RX - 4591 CF
Page - 11
MQ - 402 - 01
8.4.2. Timer interrupt
If TIE="1" when interrupt occurs, the /IRQ pin outputs "L".
If TIE="0" when interrupt occurs, the /IRQ pin enters the high impedance state and the TF bit becomes "1", and
remains so.
TIE bit
/IRQ output
TF bit
"1"
"0"
0 is written to the TF bit
Interrupt timing
High impedance
"0"
"1"
"L" level
Auto return.
t RTN
Automatic return
The automatic return time (tRTN) is determined by the source clock specified in Reg-D.
Source clock
Automatic return time (tRTN)
4096 Hz
122
s
64 Hz
7.813 ms
1 Hz
7.813 ms
Update in minutes
7.813 ms
Timer measurement error
Because the timer error is +0/-1 cycle time of the selected source clock, the timer time is following range.
(Timer time(
). Source clock period time ) to (Timer time.)
) Timer time = Source clock cycle × Value of the timer counter.
Now, the actual time of the timer is the above time, plus the communication duration of the serial data
transfer clock.
Timer start timing
In the data write mode, the timer starts counting from the rise edge of the CLK when writing to address D as
shown in the following time chart.
TSEL0
TE
0
TSEL1
Timer operation
/IRQ pin
DATA pin
CLK pin
Internal timer
Address D
How to use the /IRQ pin is asserted low for generate the interrupt signal.
At the cycle (source clock) specified in the timer interrupt setup register, the countdown starts from the value
of the timer counter. When the data becomes zero, the /IRQ pin is asserted "L" for generate the interrupt
signal. It can be used as an interval timer between a minimum of 1/4096 second to a maximum of 4095
minutes. To avoid unintended hardware interrupt during the timer setup, setting both TF bit and TIE bit, in the
beginning, is recommended.
If you do not want to use any timer interrupt, set TIE bit to "0", and monitor the TF bit with software as
required.
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| RX-8581NB | 0 TIMER(S), REAL TIME CLOCK, PDSO22 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| RX45Q | 制造商:BCM Advanced Research 功能描述:INTEL? Q45 LGA 775 SOCKET, 2 GBIT LAN, 1 PCIE X16,MTHRBRD - Bulk |
| RX-4762 | 功能描述:烙铁 SOLDERING TIP RoHS:否 制造商:Weller 产品:Soldering Stations 类型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大温度:+ 850 F 电缆类型:US Cord Included |
| RX-4763 | 功能描述:烙铁 SOLDERING TIP RoHS:否 制造商:Weller 产品:Soldering Stations 类型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大温度:+ 850 F 电缆类型:US Cord Included |
| RX-4764 | 功能描述:烙铁 SOLDERING TIP RoHS:否 制造商:Weller 产品:Soldering Stations 类型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大温度:+ 850 F 电缆类型:US Cord Included |
| RX476H-PX-TKLGX | 制造商:Sliger Designs, Inc. 功能描述:CHASSIS WITH R2U POWER SUPPLY ROHS TEKLOGIX - Bulk |
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