HD6435348R Hitachi Semiconductor, HD6435348R Datasheet - Page 302

• Manufacturer Part Number: HD6435348R
• Description: Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

Bit 5—A/D Start (ADST): The A/D converter operates while this bit is set to 1. In the single
mode, this bit is automatically cleared to 0 at the end of each A/D conversion.
Bit 5
ADST
0
1
Bit 4—Scan Mode (SCAN): This bit selects the scan mode or single mode of operation.
See section 15.4, “Operation” for descriptions of these modes.
The mode should be changed only when the ADST bit is cleared to 0.
Bit 4
SCAN
0
1
Bit 3—Clock Select (CKS): This bit controls the A/D conversion time.
The conversion time should be changed only when the ADST bit is cleared to 0.
Bit 3
CKS
0
1
Bits 2 to 0—Channel Select 2 to 0 (CH2 to CH0): These bits and the SCAN bit combine to
select one or more analog input channels.
The channel selection should be changed only when the ADST bit is cleared to 0.
Description
A/D conversion is halted.
1. Single mode: One A/D conversion is performed. The ADST bit is automatically
2. Scan mode: A/D conversion starts and continues cyclically on the selected channels
Description
Single mode
Scan mode
Description
Conversion time = 274 states (maximum)
Conversion time = 138 states (maximum)
cleared to 0 at the end of the conversion.
until the ADST bit is cleared to 0.
288
(Initial value)
(Initial value)
(Initial value)