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SC312XDP512F0MPVR датащи(PDF) 149 Page - Freescale Semiconductor, Inc

номер детали SC312XDP512F0MPVR
подробное описание детали  HCS12X Microcontrollers
PDF  1348 Pages
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производитель  FREESCALE [Freescale Semiconductor, Inc]
домашняя страница  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

SC312XDP512F0MPVR датащи(HTML) 149 Page - Freescale Semiconductor, Inc

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Chapter 4 Analog-to-Digital Converter (ATD10B16CV4) Block Description
MC9S12XDP512 Data Sheet, Rev. 2.21
Freescale Semiconductor
149
4.3.2.14
Port Data Register 0 (PORTAD0)
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.
76543210
R
PTAD15
PTAD14
PTAD13
PTAD12
PTAD11
PTAD10
PTAD9
PTAD8
W
Reset
11111111
Pin
Function
AN15
AN14
AN13
AN12
AN11
AN10
AN9
AN8
= Unimplemented or Reserved
Figure 4-16. Port Data Register 0 (PORTAD0)
Table 4-25. PORTAD0 Field Descriptions
Field
Description
7:0
PTAD[15:8]
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 VIL or VIH specifications will have an indeterminate value)).
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”.



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