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参数资料
| 型号： | RX-4571SA |
| 厂商： | EPSON TOYOCOM CORP |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | REAL TIME CLOCK, PDSO14 |
| 封装： | ROHS COMPLIANT, SOP-14 |
| 文件页数： | 22/33页 |
| 文件大小： | 579K |
| 代理商： | RX-4571SA |
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RX
4571 SA
Page - 26
ETM21E-02
13.4. /IRQ "L" Interrupt Output When Interrupt Function Operates
1) Setting interrupt events to occur in response to /IRQ "L" interrupt output
The /IRQ interrupt output pin is shared as the output pin for two kinds of interrupt events: events related to
the fixed-cycle timer interrupt function and events related to the alarm interrupt function.
When an interrupt occurs (when /IRQ is at low level ("L")), read the TF and AF flags to determine which
type of interrupt event occurred (which flag value changed to "1").
2) How to prevent /IRQ pin from going to low level ("L")
To prevent the /IRQ pin from going to low level ("L"), clear all TIE and AIE bits to zero.
To detect when an interrupt event has occurred without having to set the /IRQ pin to low level, monitor the
TF and AF flag bit values to see if the target interrupt event has occurred (i.e., to see if either flag bit value
changes from "0" to "1").
相关PDF资料 |
PDF描述 |
|---|---|
| RX-4571SA | 0 TIMER(S), REAL TIME CLOCK, PDSO14 |
| RX-4574SG | 0 TIMER(S), REAL TIME CLOCK, PDSO16 |
| RX-4591CF | 0 TIMER(S), REAL TIME CLOCK, PDSO10 |
| RX-8025NB | 0 TIMER(S), REAL TIME CLOCK, PDSO22 |
| RX-8581JE-3 | REAL TIME CLOCK, PDSO20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| RX-4571SAB | 制造商:Epson Toyocom Corporation 功能描述:Cut Tape |
| RX-4574LC | 制造商:EPSONTOYOCOM 制造商全称:Epson ToYoCom 功能描述:SERIAL-INTERFACE REAL TIME CLOCK MODULE |
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