mc68hc705v12 Freescale Semiconductor, Inc, mc68hc705v12 Datasheet - Page 135

• Manufacturer Part Number: mc68hc705v12
• Description: M68hc05-based Mcu Hc05 Freescale Semiconductor
• Manufacturer: Freescale Semiconductor, Inc

13.6 A/D Data Register
MC68HC705V12
—
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
Freescale Semiconductor, Inc.
For More Information On This Product,
$001D
Bit 7
D7
Analog-to-Digital (A/D) Converter
Go to: www.freescale.com
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