AT90USB1286-16MU ATMEL [ATMEL Corporation], AT90USB1286-16MU Datasheet - Page 347
![no-image](/images/no-image-200.jpg)
AT90USB1286-16MU
Manufacturer Part Number
AT90USB1286-16MU
Description
Microcontroller with 64/128K Bytes of ISP Flash and USB Controller
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT90USB1286-16MU.pdf
(434 pages)
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27.6.2
7593A–AVR–02/06
Scanning the RESET Pin
Figure 27-4. General Port Pin Schematic Diagram
The RESET pin accepts 5V active low logic for standard reset operation, and 12V active high
logic for High Voltage Parallel programming. An observe-only cell as shown in
inserted for the 5V reset signal.
Figure 27-5. Observe-only Cell
See Boundary-scan
Description for Details!
Pxn
From System Pin
PUD:
PUExn:
OCxn:
ODxn:
IDxn:
SLEEP:
IDxn
PULLUP DISABLE
PULLUP ENABLE for pin Pxn
OUTPUT CONTROL for pin Pxn
OUTPUT DATA to pin Pxn
INPUT DATA from pin Pxn
SLEEP CONTROL
Previous
From
PUExn
Cell
ShiftDR
0
1
ClockDR
SLEEP
OCxn
ODxn
D
FF1
SYNCHRONIZER
D
L
WDx:
RDx:
WRx:
RRx:
RPx:
CLK
Q
Q
Q
Next
I/O
Cell
To
:
D
WRITE DDRx
READ DDRx
WRITE PORTx
READ PORTx REGISTER
READ PORTx PIN
I/O CLOCK
PINxn
Q
Q
To System Logic
AT90USB64/128
RESET
RESET
Q
Q
Q
PORTxn
Q
DDxn
CLR
CLR
D
D
CLK
PUD
WDx
RDx
WRx
RRx
RPx
I/O
Figure 27-5
347
is
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