MC9S12E32CFU FREESCALE [Freescale Semiconductor, Inc], MC9S12E32CFU Datasheet - Page 227

• Manufacturer Part Number: MC9S12E32CFU
• Description: HCS12 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

6.3.2.14
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 6-16. Port Data Register 0 (PORTAD0)
Table 6-21. PORTAD0 Field Descriptions
PTAD13
AN13
MC9S12E128 Data Sheet, Rev. 1.07
1
5
PTAD12
AN12
1
4
Description
IL
PTAD11
or V
AN11
Chapter 6 Analog-to-Digital Converter (ATD10B16CV2)
1
3
IH
specifications will have an indeterminate value)).
PTAD10
AN10
1
2
PTAD9
AN9
1
1
PTAD8
AN8
1
0
227