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AN3140 数据表(PDF) 2 Page - STMicroelectronics

部件名 AN3140
功能描述  How to configure the SPEAr3xx general purpose timers
PDF  14 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

AN3140 数据表(HTML) 2 Page - STMicroelectronics

  AN3140 Datasheet HTML 1Page - STMicroelectronics AN3140 Datasheet HTML 2Page - STMicroelectronics AN3140 Datasheet HTML 3Page - STMicroelectronics AN3140 Datasheet HTML 4Page - STMicroelectronics AN3140 Datasheet HTML 5Page - STMicroelectronics AN3140 Datasheet HTML 6Page - STMicroelectronics AN3140 Datasheet HTML 7Page - STMicroelectronics AN3140 Datasheet HTML 8Page - STMicroelectronics AN3140 Datasheet HTML 9Page - STMicroelectronics Next Button
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Contents
AN3140
2/14
Doc ID 16997 Rev 1
Contents
1
General purpose timers (GPTs) in SPEAr3xx . . . . . . . . . . . . . . . . . . . . . 3
2
Reading a free-running timer counter . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
Scenario with slow CNT_Clk and fast READ_Clk . . . . . . . . . . . . . . . . . 7
4
How to configure CNT_Clk and READ_Clk to be synchronous . . . . . . 8
5
3-read software workaround . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6
Status register interrupt bit clear issue . . . . . . . . . . . . . . . . . . . . . . . . 10
6.1
Problem description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.2
Proposed solution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7
Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13



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