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lidean 发表于 2012-12-3 17:35 1 M6 d( L! H: W; S4 S" y: Q% \; ]
After power-on reset, this pin is defined as enable (EN). To enable active high, the I2C command can ... * R; l! r/ \: I' w2 K. k$ j3 n
这个芯片有两种启动方式,外部默认的EN管脚使能和I2C配置开启,具体在datasheet的首页就有提示
! N, o/ u2 `1 @% b4 UThe ADP5020 can be activated via an I2C interface or through a dedicated enable input.
2 a$ ?; L1 A8 N& T以及后面的SEQUENCER有提示0 q/ W& ?$ R9 u- `
The sequencer is enabled after a low-to-high transition of the % Q" Y3 v, q# e, g4 z
enable pin (EN). When EN is low or programmed as an output, the $ g+ e; T3 Z7 E5 b. Z
sequencing is controlled and timed by the application processor
" r, N+ u7 N% T, b5 ]7 mvia the I2C commands.
/ R- i2 Z5 H, O2 X不过当初设计的时候这个EN管脚确实应该通过电阻下拉方便后面的调试。 |
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