h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 611

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

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 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 3—Clock Select (CKS): Sets the A/D conversion time. Only change the conversion time
while ADST = 0.
Bit 5
ADST
0
1
Bit 4
SCAN
0
1
Bit 3
CKS
0
1
Description
A/D conversion stopped
Single mode: A/D conversion is started. Cleared to 0 automatically when conversion
Scan mode: A/D conversion is started. Conversion continues sequentially on the
Description
Single mode
Scan mode
Description
Conversion time = 266 states (max.)
Conversion time = 134 states (max.)
on the specified channel ends
selected channels until ADST is cleared to 0 by software, a reset, or a
transition to standby mode or module stop mode
Rev. 4.00 Jun 06, 2006 page 557 of 1004
Section 19 A/D Converter
REJ09B0301-0400
(Initial value)
(Initial value)
(Initial value)