ATMEGA169PA-AN Atmel, ATMEGA169PA-AN Datasheet - Page 67
ATMEGA169PA-AN
Manufacturer Part Number
ATMEGA169PA-AN
Description
MCU AVR 384KB FLASH 16MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA169PA-AN
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Part Number
Manufacturer
Quantity
Price
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13.2
13.2.1
8284A–AVR–10/10
Ports as General Digital I/O
Configuring the Pin
Functions” on page
nate functions.
Note that enabling the alternate function of some of the port pins does not affect the use of the
other pins in the port as general digital I/O.
The ports are bi-directional I/O ports with optional internal pull-ups.
tional description of one I/O-port pin, here generically called Pxn.
Figure 13-2. General Digital I/O
Note:
Each port pin consists of three register bits: DDxn, PORTxn, and PINxn. As shown in
Description” on page
at the PORTx I/O address, and the PINxn bits at the PINx I/O address.
The DDxn bit in the DDRx Register selects the direction of this pin. If DDxn is written logic one,
Pxn is configured as an output pin. If DDxn is written logic zero, Pxn is configured as an input
pin.
If PORTxn is written logic one when the pin is configured as an input pin, the pull-up resistor is
activated. To switch the pull-up resistor off, PORTxn has to be written logic zero or the pin has to
ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P
Pxn
1. WRx, WPx, WDx, RRx, RPx, and RDx are common to all pins within the same port. clk
SLEEP, and PUD are common to all ports.
PUD:
SLEEP:
clk
I/O
72. Refer to the individual module sections for a full description of the alter-
:
93, the DDxn bits are accessed at the DDRx I/O address, the PORTxn bits
PULLUP DISABLE
SLEEP CONTROL
I/O CLOCK
(1)
SLEEP
SYNCHRONIZER
D
L
WDx:
RDx:
WRx:
RRx:
RPx:
WPx:
Q
Q
D
PINxn
WRITE DDRx
READ DDRx
WRITE PORTx
READ PORTx REGISTER
READ PORTx PIN
WRITE PINx REGISTER
Q
Q
RESET
RESET
PORTxn
Q
Q
Q
Q
DDxn
CLR
CLR
D
D
RRx
Figure 13-2
PUD
WDx
RDx
RPx
clk
1
0
I/O
WPx
WRx
shows a func-
”Register
I/O
,
67
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