mc68hc05l25 Freescale Semiconductor, Inc, mc68hc05l25 Datasheet - Page 116

• Manufacturer Part Number: mc68hc05l25
• Description: M68hc05 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Analog Subsystem
12.9 A/D Conversion Data Register
This register contains the output of the A/D converter.
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read as a logic 0. If the DDR = 1, the port A data register will read the output latch value. The remaining
port A pins will read normally. To digitally read a multiplexed port A pin as an input port, the A/D
subsystem must be disabled (ADON = 0) or input channels 2–7 must be selected.
Address:
Reset:
Read:
Write:
Figure 12-2. A/D Conversion Value Data Register (ADDR)
$001D
Bit 7
AD7
= Unimplemented
AD6
Channel
6
Table 12-1. A/D Multiplexer Input
0
1
2
3
4
5
6
7
MC68HC05L25 Data Sheet, Rev. 3.1
Channel Assignments
AD5
5
Unaffected by Reset
AD4
(V
4
AD0 Port A Bit 4
AD1 Port A Bit 5
REFH
V
V
Factory Test
REFH
Reserved
Reserved
REFL
Signal
+ V
= V
= V
AD3
REFL
3
DD
SS
)/2
AD2
2
AD1
1
Freescale Semiconductor
Bit 0
AD0