ATAVRDISPLAYX Atmel, ATAVRDISPLAYX Datasheet - Page 133
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
ATAVRDISPLAYX
Manufacturer Part Number
ATAVRDISPLAYX
Description
KIT EVAL XMEGA DISPLAY
Manufacturer
Atmel
Specifications of ATAVRDISPLAYX
Main Purpose
*
Embedded
*
Utilized Ic / Part
*
Primary Attributes
*
Secondary Attributes
*
Silicon Manufacturer
Atmel
Silicon Family Name
ATxmega
Kit Contents
Board
Features
Temperature Sensor, Mono Speaker Via Audio Amplifier
Svhc
No SVHC (15-Dec-2010)
Core Architecture
AVR
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATAVRDISPLAYX
Manufacturer:
Atmel
Quantity:
135
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13.4.4
13.5
8077H–AVR–12/09
Reading the Pin value
Wired-AND
Figure 13-6. Output configuration - Wired-OR with optional pull-down.
With Wired-AND configuration, the pin will be driven low when the corresponding bit in OUT is
written to zero. When OUT is set to one, the pin is released allowing the pin to be pulled low with
the internal or an external pull-resistor. If internal pull-up is used, this is also active if the pin is
set as input.
Figure 13-7. Output configuration - Wired-AND with optional pull-up.
Independent of the pin data direction, the pin value can be read from the IN register as shown in
Figure 13-1 on page
register bit and the preceding flip-flop constitute a synchronizer. The synchronizer is needed to
avoid metastability if the physical pin changes value near the edge of the internal clock. The
Synchronizer introduces a delay on the internal signal line.
timing diagram of the synchronization when reading an externally applied pin value. The maxi-
mum and minimum propagation delays are denoted t
130. If the digital input is disabled, the pin value cannot be read. The IN
OUTn
OUTn
INn
INn
pd,max
and t
Figure 13-8 on page 134
pd,min
respectively.
Pn
Pn
XMEGA A
shows a
133
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