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S6E2HE4E0A Datasheet, PDF (142/164 Pages) – | |||
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12.4.14 I2C æ¶åº
æ å模å¼ï¼å¿«é模å¼
ï¼VCC = 2.7 V ~ 5.5 Vï¼VSS = 0 Vï¼
åæ°
符å·
æ¡ä»¶
æ å模å¼
é«é模å¼
æå°å¼ æå¤§å¼ æå°å¼ æå¤§å¼ åä½
å¤æ³¨
SCL æ¶éé¢ç
fSCL
0
100
0
400 kHz
ï¼éå¤ï¼èµ·å§ä¿¡å·ä¿ææ¶é´
ï¼ä» SDA ä¸éæ²¿å° SCL ä¸éæ²¿ï¼ tHDSTA
4.0
â
0.6
â
μs
SCL æ¶éä½çµå¹³æ¶é´
SCL æ¶éé«çµå¹³æ¶é´
ï¼éå¤ï¼èµ·å§ä¿¡å·ç建ç«æ¶é´
ï¼ä» SCL ä¸åæ²¿å° SDA ä¸é沿ï¼
tLOW
tHIGH
tSUSTA
4.7
â
1.3
â
μs
4.0
â
0.6
â
μs
4.7
â
0.6
â
μs
æ°æ®ä¿ææ¶é´
ï¼ä» SCL ä¸éæ²¿å° SDA ä¸é沿/
ä¸å沿ï¼
tHDDAT
CL = 30 pFï¼
R = (Vp/IOL)*1
0
3.45*2
0
0.9*3 μs
æ°æ®å»ºç«æ¶é´
ï¼ä» SDA ä¸é沿/ä¸åæ²¿å° SCL
ä¸å沿ï¼
tSUDAT
250
â
100
â
ns
åæ¢ä¿¡å·ç建ç«æ¶é´
ï¼ä» SCL ä¸åæ²¿å° SDA ä¸åæ²¿ï¼ tSUSTO
4.0
â
0.6
â
μs
åæ¢ä¿¡å·åèµ·å§ä¿¡å·ä¹é´
çæ»çº¿ç©ºé²æ¶é´
tBUF
4.7
â
1.3
â
μs
åªå£°è¿æ»¤æ¶é´
2 MHz â¤
tCYCP < 40 MHz
2tCYCP*4
â
2tCYCP*4
â
ns
40 MHz â¤
tCYCP < 60 MHz
4tCYCP*4
â
4tCYCP*4
â
ns
60 MHz â¤
tCYCP < 80 MHz
6tCYCP*4
â
6tCYCP*4
â
ns
tSP
80 MHz â¤
tCYCP < 100 MHz
100 MHz â¤
tCYCP < 120 MHz
8tCYCP*4
10tCYCP*4
â
â
8tCYCP*4
â
10tCYCP*4
â
ns
ns
*5
120 MHz â¤
tCYCP < 140 MHz
12tCYCP*4
â
12tCYCP*4
â
ns
140 MHz â¤
tCYCP < 160 MHz
14tCYCP*4
â
14tCYCP*4
â
ns
160 MHz â¤
tCYCP < 180 MHz
16tCYCP*4
â
16tCYCP*4
â
ns
1ï¼R å CL åå«è¡¨ç¤º SCL å SDA 线çä¸æçµé»åè´è½½çµå®¹ãVp æ¯æä¸æçµé»ççµæºçµåï¼è IOL æ¯æç½®æ»çº¿äº VOL çä¿è¯
çµæµã
2ï¼tHDDAT çæ大å¼ä¸è½è¶
è¿å¨ä»¶ç SCL ä¿¡å·çä½çµå¹³ï¼tLOWï¼æ¶é´ã
3ï¼åªè¦å¨ä»¶æ»¡è¶³ tSUDAT ⥠250 ns çæ¡ä»¶ï¼å¿«éæ¨¡å¼ I2C æ»çº¿å¨ä»¶ä¾¿è½å¤ç¨äºæ åæ¨¡å¼ I2C æ»çº¿ç³»ç»ä¸ã
4ï¼tCYCP æ¯æ APB æ»çº¿æ¶éå¨ææ¶é´ãæå
³ I2C ææ¥ç APB æ»çº¿ç¼å·ç详ç»ä¿¡æ¯ï¼è¯·åè第 8 ç« æ¡å¾çå
容ã
使ç¨æ å模å¼æ¶ï¼å¤è®¾æ»çº¿æ¶éé¢çå¿
é¡»å¤§äº 2 MHzã
使ç¨å¿«é模å¼æ¶ï¼å¤è®¾æ»çº¿æ¶éé¢çå¿
é¡»å¤§äº 8 MHzã
5ï¼è®¾ç½®å¯åå¨å¯ä»¥ä¿®æ¹åªå£°è¿æ»¤æ¶é´ãæ ¹æ® APB æ»çº¿æ¶éé¢çæ¹ååªå£°è¿æ»¤èå´ã
ææ¡£ç¼å·ï¼002-00219 çæ¬**
页 142/164
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