class I2C:
 
-    def __init__(self, *, baudrate=100000):
+    def __init__(self, *, frequency=100000):
         self._mcp2221 = mcp2221
-        self._mcp2221.i2c_configure(baudrate)
+        self._mcp2221.i2c_configure(frequency)
 
     def scan(self):
         return self._mcp2221.i2c_scan()
         self._mcp2221.i2c_writeto_then_readfrom(address, buffer_out, buffer_in,
                                           out_start=out_start, out_end=out_end,
                                           in_start=in_start, in_end=in_end)
-