HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 1009
HD6417320
Manufacturer Part Number
HD6417320
Description
Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
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Condition: The problem arises in the following cases. Also see the table below:
Table 27.4 Conditions for the Method of Transferring Results of A/D Conversion and
Current Conversion
Single Mode/
Multi Mode
Scan Mode
Avoiding the Problem: Follow either of procedures (a) or (b) below.
(a) In Single/Multi Mode
(b) In Scan Mode
(a) After A/D conversion has stopped, initialize the ADC by placing it in the module standby
(b) Operation under the following conditions ensures that the problem will not arise.
• In Single/Multi Mode
• In Scan Mode
The Next Conversion
state. Start the next round of A/D conversion after releasing the ADC from the module
standby state.
The problem arises when A/D conversion is started while the setting of the
The problem arises when A/D conversion is started while the setting of the
ADCSR.DMASL bit is 1, after having proceeded and stopped.
ADCSR.DMASL bit is 1, after having proceeded while the setting of the DMASL bit
was 0 and then stopped.
Inclusion of Superfluous DMA
Transfer when DMASL = 0 → Transfer when DMASL = 0
Transfer when DMASL = 0 → Transfer when DMASL = 0
Transfer when DMASL = 1 → Transfer when DMASL = 1
DMASL = 0
DMASL = 1
DMASL = 0
DMASL = 1
In Single/Multi Mode
DMASL = 0
Normal
Normal
Normal
Normal
DMASL = 1
Faulty
Normal
Faulty
Faulty
Rev. 3.00
In Scan Mode
DMASL = 0
Normal
Normal
Normal
Normal
Jan. 18, 2008
Section 27
REJ09B0033-0300
Page 947 of 1458
Faulty
Normal
Faulty
Faulty
DMASL = 1
A/D Converter
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