r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 718

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Section 17 A/D Converter (ADC)
Rev. 1.00 Sep. 21, 2007 Page 692 of 1124
REJ09B0402-0100
Bit
0
Bit Name
EXTRG
0
Initial
Value
R/W
R/W
Description
Trigger Select
Selects the external trigger (ADTRG) or an A/D conversion
start trigger from the MTU2 or MTU2S as an A/D
conversion start trigger.
When the external trigger is selected (EXTRG = 1), upon
input of a low-level pulse to the ADTRG pin after the
TRGE bit is set to 1, the A/D converter detects the falling
edge of the pulse, and sets the ADST bit in ADCR to 1.
The operation which is performed when 1 is written to the
ADST bit by software is subsequently performed. A/D
conversion start by the external trigger input is enabled
only when the ADST bit is cleared to 0.
When the external trigger is used as an A/D conversion
start trigger, the low-level pulse input to the ADTRG pin
must be at least 1.5 Pφ clock cycles in width.
0: A/D converter is started by the A/D conversion start
1: A/D converter is started by the external pin (ADTRG)
trigger from the MTU2 or MTU2S