mc9s12hz256v2 Freescale Semiconductor, Inc, mc9s12hz256v2 Datasheet - Page 231
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mc9s12hz256v2
Manufacturer Part Number
mc9s12hz256v2
Description
Hcs12 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S12HZ256V2.pdf
(692 pages)
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7.3.2.14
The data port associated with the ATD is input-only. The port pins are shared with the analog A/D inputs
AN[15:8].
Read: Anytime
Write: Anytime, no effect
The A/D input channels may be used for general-purpose digital input.
Freescale Semiconductor
Function
PTAD[15:8]
Reset
Field
Pin
7:0
W
R
PTAD15
AN15
Port Data Register 0 (PORTAD0)
1
7
A/D Channel x (ANx) Digital Input Bits— If the digital input buffer on the ANx pin is enabled (IENx = 1) or
channel x is enabled as external trigger (ETRIGE = 1, ETRIGCH[3-0] = x, ETRIGSEL = 0) read returns the
logic level on ANx pin (signal potentials not meeting V
If the digital input buffers are disabled (IENx = 0) and channel x is not enabled as external trigger, read returns
a “1”.
Reset sets all PORTAD0 bits to “1”.
= Unimplemented or Reserved
PTAD14
AN14
1
6
Figure 7-16. Port Data Register 0 (PORTAD0)
Table 7-25. PORTAD0 Field Descriptions
PTAD13
AN13
MC9S12HZ256 Data Sheet, Rev. 2.05
1
5
PTAD12
AN12
1
4
Description
IL
PTAD11
or V
AN11
Chapter 7 Analog-to-Digital Converter (ATD10B16CV4)
1
3
IH
specifications will have an indeterminate value)).
PTAD10
AN10
1
2
PTAD9
AN9
1
1
PTAD8
AN8
1
0
231
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