UPD70F3793GC-UEU-AX Datasheet, PDF (509/1113 Pages) Renesas Technology Corp – RENESAS MCU V850ES/Jx3-L Microcontrollers

V850ES/JG3-L
CHAPTER 14 A/D CONVERTER
(2/2)
ADA0ETS1ADA0ETS0 Specification of external trigger (ADTRG pin) input valid edge
0
0
No edge detection
0
1
Falling edge detection
1
0
Rising edge detection
1
1
Detection of both rising and falling edges
ADA0TMD
Trigger mode selection
0
Software trigger mode
1
External trigger mode/timer trigger mode
ADA0EF
A/D converter status display
0
A/D conversion stopped
1
A/D conversion in progress
Cautions 1. A write operation to bit 0 is ignored.
2. Changing the ADA0M1.ADA0FR2 to ADA0M1.ADA0FR0 bits is prohibited while A/D
conversion is enabled (ADA0CE bit = 1).
3. In the following modes, write data to the ADA0M0, ADA0M2, ADA0S, ADA0PFM, or
ADA0PFT registers while A/D conversion is stopped (ADA0CE bit = 0), and then enable
A/D conversion (ADA0CE bit = 1).
• Normal conversion mode
• One-shot select mode/one-shot scan mode in high-speed conversion mode
If the ADA0M0, ADA0M2, ADA0S, ADA0PFM, and ADA0PFT registers are written in
other modes during A/D conversion (ADA0EF bit = 1), the following will be performed,
according to the mode.
• In software trigger mode
A/D conversion is stopped and started again from the beginning.
• In hardware trigger mode
A/D conversion is stopped, and the trigger standby status is set.
4. To select the external trigger mode/timer trigger mode (ADA0TMD bit = 1), set the
high-speed conversion mode (ADA0M1.ADA0HS1 bit = 1). Do not input a trigger
during the stabilization time that is inserted once after A/D conversion is enabled
(ADA0CE bit = 1).
5. When not using the A/D converter, stop A/D conversion by setting the ADA0CE bit to 0
to reduce power consumption.
R01UH0165EJ0700 Rev.7.00
Sep 22, 2011
Page 509 of 1113