A-D CONVERTER
12.2 Block description
(7)
VREF connection select bit (bit 6 at address 1F16)
When the A-D converter is not used, this bit is used to disconnect the resistor ladder network of the
A-D converter from the reference voltage input pin (VREF).
When the resistor ladder network is disconnected from pin VREF, the current is not flowed from pin
V
REF to resistor ladder network. Accordingly, the power dissipation can be saved.
When this bit changes from “1” (VREF disconnected) to “0” (VREF connected), start of the operation
must be 1 µs or more later.
7905 Group User’s Manual Rev.1.0
12-9
RENESAS [ RENESAS TECHNOLOGY CORP ]
