atmega163l ATMEL Corporation, atmega163l Datasheet - Page 116
atmega163l
Manufacturer Part Number
atmega163l
Description
Atmega163 8-bit Avr Microcontroller With 16k Bytes Of In-system Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet
1.ATMEGA163L.pdf
(187 pages)
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PORT A Schematics
116
ATmega163(L)
PUD bit has to be set. The Port A pins are tri-stated when a reset condition becomes
active, even if the clock is not running.
Table 44. DDAn Effects on PORTA Pins
Note:
Note that all port pins are synchronized. The synchronization latches are not shown in
the figure.
Figure 63. PORTA Schematic Diagrams (Pins PA0 - PA7)
DDAn
0
0
0
1
1
1. n: 7,6…0, pin number.
PDn
PORTAn
0
1
1
0
1
MOS
PULL-
UP
WP:
WD:
RL:
RP:
RD:
n:
PUD: PULL-UP DISABLE
WRITE PORTA
WRITE DDRA
READ PORTA LATCH
READ PORTA PIN
READ DDRA
0-7
PUD
x
1
0
x
x
PWRDN
Output
Output
Input
Input
Input
I/O
PUD
Pull Up
Yes
No
No
No
No
(1)
RL
RP
Comment
Tri-state (Hi-Z)
Tri-state (Hi-Z)
PAn will source current if ext. pulled low.
Push-pull Zero Output
Push-pull One Output
TO ADC MUX
Q
Q
PORTAn
RESET
RESET
DDAn
WD
RD
WP
C
C
D
D
1142E–AVR–02/03
ADCn
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