M32CSLASH86 datasheet(272/505 Pages) RENESAS

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Page 249

18. A/D Converter

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18.1.7 Multi-Port Repeat Sweep Mode 0

In multi-port repeat sweep mode 0, analog voltage that is applied to 16 selected pins is repeatedly con-

verted to a digital code. Set the DUS bit in the AD0CON3 register to "1" (DMAC operating mode en-

abled). Table 18.8 lists specifications of multi-port repeat sweep mode 0.

Table 18.8 Multi-Port Repeat Sweep Mode 0 Specifications

Item

Specification

Function

The MPS11 and MPS10 bits in the AD0CON4 register select 16 pins. Analog

voltage applied to the 16 pins is repeatedly converted to a digital code in the fol-

lowing order: AN0 to AN7

ANi0 to ANi7 (i=0, 2, 15)

e.g., When the MPS11 and MPS10 bits are set to "102" (AN0 to AN7, AN00 to AN07),

analog voltage is repeatedly converted to a digital code in the following order:

AN0

AN1

AN2

AN3

AN4

AN5

AN6

AN7

AN00

AN01

.......

AN06

AN07

Start Condition

Same as one-shot mode

Stop Condition

The ADST bit is set to "0" (A/D conversion stopped) by program

Interrupt Request Generation Timing An interrupt request is generated after each A/D conversion is completed

(Set the DUS bit to "1")

Analog Voltage Input Pins

Selectable from AN0 to AN7

AN150 to AN157, AN0 to AN7

AN00 to AN07 or

AN0 to AN7

AN20 to AN27

Reading of A/D Conversion Result Do not read the AD00 register. A/D conversion result is stored in the AD00 regis-

ter after the A/D conversion is completed. DMAC transfers the conversion result

to any memory space. Refer to 13. DMAC for DMAC settings

(Set the DUS bit to "1")

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