HD6433308 HITACHI [Hitachi Semiconductor], HD6433308 Datasheet - Page 223

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HD6433308

Manufacturer Part Number
HD6433308
Description
Hitachi Single-Chip MicroComputer
Manufacturer
HITACHI [Hitachi Semiconductor]
Datasheet

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The ADCSR is initialized to H’00 at a reset and in the standby modes.
Bit 7 – A/D End Flag (ADF): This status flag indicates the end of one cycle of A/D conversion.
Bit 7
ADF
Bit 6 – A/D Interrupt Enable (ADIE): This bit selects whether to request an A/D interrupt (ADI)
when A/D conversion is completed.
Bit 6
ADIE
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
0
1
0
1
Description
To clear ADF, the CPU must read ADF after
it has been set to "1," then write a "0" in this bit.
This bit is set to 1 at the following times:
(1) Single mode: when one A/D conversion is completed.
(2) Scan mode: when inputs on all selected channels have
Description
The A/D interrupt request (ADI) is disabled.
The A/D interrupt request (ADI) is enabled.
Description
A/D conversion is halted.
(1) Single mode: One A/D conversion is performed. The ADST
(2) Scan mode: A/D conversion starts and continues cyclically on the selected
been converted.
bit is automatically cleared to “0” at the end of the conversion.
channels until the ADST bit is cleared to “0” by software (or a reset, or by entry to
a standby mode).
211
(Initial value)
(Initial value)
(Initial value)

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