cy7c65642-28引脚12cSDA引脚

嗨，南达，
PWRα/i2CysDA可以用作PWRα或I2CsSDA，但不能用作28引脚QFN封装。如果EEPROM连接，那么PIN将充当I2CY-SDA，它将不会切换到PWRα模式（正如它在48引脚TQFP封装）。
如果EEPROM没有被使用，PWR是一个有源低引脚（低激活时），它需要一个外部上拉电阻。
测试引脚可用于测试模式，通过驱动高。对于正常运行，建议把这个引脚低。
问候，阿尼尔



     以下为原文
  Hi Nanda,
 
PWR#/I2C_SDA can be used as either PWR# or I2C_SDA but not as both in 28-pin QFN Package. If EEPROM is connected then the pin will act as I2C_SDA, it will not switch to PWR# mode (as it does in 48-pin TQFP package).
If EEPROM is not being used, PWR# is an active LOW pin (LOW when activated), which needs an external pull-up resistor.
TEST pin can be used for Test Mode by driving it HIGH. For Normal operation it is recommended to drive this pin LOW.
 
Regards,
Anil

另外，请确保PWR和VCCD/+5V与100KOHM电阻、OVRα连接到10kOHm的相同功率。由于PWR是开路漏输出，OVR是开放漏极输入。
有关测试引脚的更多细节，请参阅：
连接EZ-USB®HX2VL协议的测试/I2CYSCL引脚-KBA8488



     以下为原文
  Also, make sure  to connect PWR# to VCCD/+5V with 100kohm resistors, OVR# to the same power with 10Kohm. Because PWR# is open drain output and OVR# is open drain input.
 
For more details on test pin, please refer:
Connecting the TEST/I2C_SCL Pin of EZ-USB® HX2VL™ - KBA85448