M32CSLASH86 datasheet(268/505 Pages) RENESAS

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18. A/D Converter

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18.1.3 Single Sweep Mode

In single sweep mode, analog voltage that is applied to selected pins is converted one-by-one to a digital

code. Table 18.4 lists specifications of single sweep mode.

Table 18.4 Single Sweep Mode Specifications

Item

Specification

Function

The SCAN1 and SCAN0 bits in the AD0CON1 register and the APS1 and APS0

bits in the AD0CON2 register select pins. Analog voltage applied to the pin is

converted one-by-one to a digital code

Start Condition

Same as one-shot mode

Stop Condition

Same as one-shot mode

Interrupt Request Generation Timing • When the DUS bit in the AD0CON3 register is set to "0" (DMAC operating

mode disabled), an interrupt request is generated after a sweep is completed.

• When DUS bit is set to "1" (DMAC operating mode enabled), an interrupt

request is generated every time an A/D conversion is completed

Analog Voltage Input Pins

Select from ANi0 and ANi1 (2 pins) (i=none, 0, 2, 15), ANi0 to ANi3 (4 pins), ANi0 to

ANi5 (6 pins) or ANi0 to ANi7 (8 pins)

Reading of A/D Conversion Result • When the DUS bit is set to "0", the microcomputer reads the AD0j register corre-

sponding to selected pins

• When DUS bit is set to "1", do not read the AD00 register. A/D conversion result

is stored in the AD00 register after the A/D conversion is completed. DMAC

transfers the conversion result to any memory space. Refer to 13. DMAC for

DMAC settings

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