Datasheet

Section 19 A/D Converter
Rev. 4.00 Jun 06, 2006 page 557 of 1004
REJ09B0301-0400
Bit 5—A/D Start (ADST): Selects starting or stopping of A/D conversion. Holds a value of 1
during A/D conversion.
The ADST bit can be set to 1 by software, a timer conversion start trigger, or the A/D external
trigger input pin (ADTRG).
Bit 5
ADST Description
0 A/D conversion stopped (Initial value
)
1 Single mode: A/D conversion is started. Cleared to 0 automatically when conversion
on the specified channel ends
Scan mode: A/D conversion is started. Conversion continues sequentially on the
selected channels until ADST is cleared to 0 by software, a reset, or a
transition to standby mode or module stop mode
Bit 4—Scan Mode (SCAN): Selects single mode or scan mode as the A/D conversion operating
mode. See section 19.4, Operation, for single mode and scan mode operation. Only set the SCAN
bit while conversion is stopped.
Bit 4
SCAN Description
0 Single mode (Initial value
)
1 Scan mode
Bit 3—Clock Select (CKS): Sets the A/D conversion time. Only change the conversion time
while ADST = 0.
Bit 3
CKS Description
0 Conversion time = 266 states (max.) (Initial value
)
1 Conversion time = 134 states (max.)