m30833fjgp Renesas Electronics Corporation., m30833fjgp Datasheet - Page 259

• Manufacturer Part Number: m30833fjgp
• Description: Renesas 16/32-bit Single-chip Microcomputer M16c Family / M32c/80 Series
• Manufacturer: Renesas Electronics Corporation.

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17.2 Function
e
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3
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Table 17.8 Repeat Sweep Mode 1 Specifications
0
Function
Start Condition
Stop Condition
Interrupt Request Generation Timing Not generated
Analog Voltage Input Pins
Prioritized Pins
Reading of A/D Conversion Result The ADik register (k=0 to 7) corresponding to selected pins
2
17.1.5 Repeat Sweep Mode 1
17.2.1 Resolution Select Function
17.2.2 Sample and Hold
17.2.3 Trigger Select Function
1
9
C
3 .
B
In repeat sweep mode 1, analog voltage selectively applied to eight pins is repeatedly converted to a
digital code. Table 17.8 lists specifications of repeat sweep mode 1.
The BITS bit in the ADiCON1 (i=0, 1) register determines the resolution. When the BITS bit is set to "1"
(10-bit precision), the A/D conversion result is stored into bits 0 to 9 in the ADij register (j = 0 to 7). When
the BITS bit is set to "0" (8-bit precision), the A/D conversion result is stored into bits 0 to 7 in the ADij
register.
When the SMP bit in the ADiCON2 register is set to "1" (with the sample and hold function), A/D conver-
sion rate per pin increases to 28 Ø
The sample and hold function is available in all operating modes. Start the A/D conversion after selecting
whether the sample and hold function is to be used or not.
The TRG bit in the ADiCON0 register and the TRG1 to TRG0 bits in the ADiCON2 register determine the
trigger to start the A/D conversion. Table 17.9 lists settings of the trigger select function.
8 /
0
1
0
3
3
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4
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3 .
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3
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1
2
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6
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8 /
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3
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8 /
Select from AN
Analog voltage selectively applied to 8 pins selected by the SCAN1 to SCAN0 bits
in the ADiCON1 register (i=0,1) is repeatedly converted to a digital code.
Same as one-shot mode
program
ANj
pins)
Select from ANj
ANj
The ADST bit in the ADiCON1 register is set to "0" (A/D conversion stopped) by
4
e.g., When ANj
8
3
8
) T
0
0
ANj
to ANj
to ANj
digital code in the following order:
AD
0
cycles for 8-bit resolution and 33 Ø
7
3
ANj
(8 pins)
(4 pins)
0
1
0
(1 pin), AN
0
(j=0, 2, 15) (1 pin), ANj
is selected (j =none, 0, 2, 15), analog voltage is converted to a
ANj
0
0
ANij
to AN
2
Specification
1
(2 pins), AN
ANj
0
0
to ANj
ANj
3
0
AD
....... etc.
to AN
1
(2 pins), AN
cycles for 10-bit resolution.
2
(3 pins), or AN
0
17. A/D Converter
to AN
0
2
to AN
(3 pins),
3
(4