E62655RUSB Renesas Electronics America, E62655RUSB Datasheet - Page 722

• Manufacturer Part Number: E62655RUSB
• Description: EMULATOR BASE H8S/2655R W/USB
• Manufacturer: Renesas Electronics America
• Type: Microcontrollerr

Specifications of E62655RUSB

• Contents: E6000 Emulator Unit and 4 Logic Probes
• For Use With/related Products: H8S/2655R
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Section 16 A/D Converter
16.4.2
Select scan mode is selected when A/D conversion is to be performed repeatedly on a single
channel. This mode is suitable for constantly monitoring analog input on a single channel.
A/D conversion is started when the ADST bit is set to 1, according to the specified conversion
start condition. The ADST bit remains set to 1 until cleared to 0 by software. During this time,
A/D conversion is performed repeatedly on the selected input channel.
When the first conversion operation ends, the ADF flag is set to 1. If the ADIE bit is set to 1 at
this time, an ADI interrupt request is generated and A/D conversion is temporarily halted. Clearing
the ADF flag to 0 when conversion has been halted by an ADI interrupt request will restart
conversion. The ADF flag is cleared by writing 0 after reading ADCSR. (It can be cleared with the
BCLR instruction.)
Figure 16.4 shows an example of A/D converter operation when AN
mode.
Rev. 5.00 Sep 14, 2006 page 692 of 1060
REJ09B0331-0500
ADF
ADST
Channel 0
Channel 1
Channel 2
Channel 3
ADDRA
ADDRB
ADDRC
ADDRD
Select Scan Mode
Figure 16.4 Example of A/D Converter Operation (Select Scan Mode)
Conversion standby
Conversion standby
Conversion
Conversion standby
Conversion standby
standby
Set to 1 by software
Sampling 1
A/D
conversion 1
Sampling 2
A/D
conversion 2
Sampling 3
Conversion
result 1
A/D
conversion 3
Sampling 4
Conversion
result 2
A/D conversion 5
Cleared to 0 by
software
A/D
conversion 4
Sampling 5
Conversion
result 3
1
is selected in select scan
Conversion
result 4
Conversion stops
Sampling 6