h8s-2158 Renesas Electronics Corporation., h8s-2158 Datasheet - Page 760
h8s-2158
Manufacturer Part Number
h8s-2158
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2158.pdf
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Section 22 A/D Converter
22.5.4
A/D conversion can be externally triggered. When the TRGS1 and TRGS0 bits are set to B'11 in
ADCR, external trigger input is enabled at the ADTRG pin. A falling edge at the ADTRG pin sets
the ADST bit to 1 in ADCSR, starting A/D conversion. Other operations, in both single and scan
modes, are the same as when the ADST bit has been set to 1 by software. Figure 22.3 shows the
timing.
22.6
The A/D converter generates an A/D conversion end interrupt (ADI) at the end of A/D conversion.
Setting the ADIE bit to 1 enables ADI interrupt requests while the ADF bit in ADCSR is set to 1
after A/D conversion ends.
The ADI interrupt can be used as a DTC activation interrupt source.
Table 22.5 A/D Converter Interrupt Source
Rev. 3.00 Jan 25, 2006 page 708 of 872
REJ09B0286-0300
Name
ADI
External Trigger Input Timing
Interrupt Source
Internal trigger
ADTRG
signal
ADST
Interrupt Source
A/D conversion end
Figure 22.3 External Trigger Input Timing
Interrupt Flag
ADF
A/D conversion
DTC Activation
Possible
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