MC68HC705V12CFN MOTOROLA [Motorola, Inc], MC68HC705V12CFN Datasheet - Page 135
MC68HC705V12CFN
Manufacturer Part Number
MC68HC705V12CFN
Description
The Motorola microcontroller
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC705V12CFN.pdf
(248 pages)
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13.6 A/D Data Register
MC68HC705V12
MOTOROLA
—
Rev. 3.0
Address:
CH4–CH0 — Channel Select Bits
An 8-bit result register is provided. This register is updated each time the
COCO bit is set.
Reset:
Read:
Write:
CN4, CH3, CH2, CH1, and CH0 form a 5-bit field which is used to
select one of nine A/D channels, including four internal references.
Channels $00 4 correspond to port D input pins on the MCU.
Channels $10 $13 are used for internal reference points. In
single-chip mode, channel $13 is reserved and converts to $00.
Table 13-1
$001D
Bit 7
D7
Analog-to-Digital (A/D) Converter
Figure 13-2. A/D Data Register (ADDR)
$05 $0F, $14 $1F
shows the signals selected by the channel select field.
= Unimplemented
Table 13-1. A/D Channel Assignments
D6
CH4–CH0
6
00–04
$10
$11
$12
$13
D5
5
Unaffected by reset
D4
4
(V
D3
REFH
3
Factory test
AD0–AD4
Analog-to-Digital (A/D) Converter
Unused
Signal
V
V
REFH
REFL
–V
REFL
D2
2
)/2
Advance Information
A/D Data Register
D1
1
Bit 0
D0
135
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