M30622ECTFP datasheet(148/184 Pages) MITSUBISHI

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148

Tentative Specifications REV.A

Mitsubishi microcomputers

M16C / 62T Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Specifications in this manual are tentative and subject to change.

Under

development

A-D Converter

Figure 1.20.2. A-D converter-related registers (1)

A-D control register 0 (Note 1)

SymbolAddressWhen reset

ADCON003D616

00000XXX2

b7b6b5b4b3b2b1b0

Analog input pin select bit

0 0 0 : AN0 is selected

0 0 1 : AN1 is selected

0 1 0 : AN2 is selected

0 1 1 : AN3 is selected

1 0 0 : AN4 is selected

1 0 1 : AN5 is selected

1 1 0 : AN6 is selected(Note 2)

1 1 1 : AN7 is selected(Note 3)

CH0

Bit symbolBit nameFunction

CH1

CH2

A-D operation mode select

bit 0

0 0 : One-shot mode

0 1 : Repeat mode

1 0 : Single sweep mode

1 1 : Repeat sweep mode 0

Repeat sweep mode 1(Note 3)

MD0

MD1

Trigger select bit0 : Software trigger

1 : ADTRG trigger

TRG

ADST

A-D conversion start flag0 : A-D conversion disabled

1 : A-D conversion started

Frequency select bit 00 : fAD/4 is selected

1 : fAD/2 is selected

CKS0

A-D control register 1 (Note 1)

Symbol

AddressWhen reset

ADCON103D716

0016

Bit nameFunction

Bit symbol

b7b6b5b4b3b2b1b0

A-D sweep pin select bit

SCAN0

SCAN1

MD2

BITS

8/10-bit mode select bit0 : 8-bit mode

1 : 10-bit mode

VCUT

OPA0

Vref connect bit

OPA1

A-D operation mode

select bit 1

0 : Any mode other than repeat sweep

mode 1

1 : Repeat sweep mode 1

0 : Vref not connected

1 : Vref connected

External op-amp

connection mode bit

b2 b1 b0

b4 b3

When single sweep and repeat sweep

mode 0 are selected

0 0 : AN0, AN1 (2 pins)

0 1 : AN0 to AN3 (4 pins)

1 0 : AN0 to AN5 (6 pins)

1 1 : AN0 to AN7 (8 pins)

b1 b0

When repeat sweep mode 1 is selected

0 0 : AN0 (1 pin)

0 1 : AN0, AN1 (2 pins)

1 0 : AN0 to AN2 (3 pins)

1 1 : AN0 to AN3 (4 pins)(Note 3)

b1 b0

0 0 : ANEX0 and ANEX1 are not used

0 1 : ANEX0 input is A-D converted

1 0 : ANEX1 input is A-D converted

1 1 : External op-amp connection mode

b7 b6

Note 1: If the A-D control register is rewritten during A-D conversion, the conversion result is

indeterminate.

Note 2: AN00 to AN07, and AN20 to AN27 can be used the same as AN0 to AN7.

Note 3: When changing A-D operation mode, set analog input pin again.

Frequency select bit 10 : fAD/2 or fAD/4 is selected

1 : fAD is selected

CKS1

Note 1: If the A-D control register is rewritten during A-D conversion, the conversion result is

indeterminate.

Note 2 : Divide the frequency if f(XIN) exceeds 10MHz, and make

φAD frequency equal to 10

MHz.

Note 3 : AN00 to AN07, and AN20 to AN27 can be used the same as AN0 to AN7.

(Note 2)

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