ATA6616-P3QW Atmel, ATA6616-P3QW Datasheet - Page 90

• Manufacturer Part Number: ATA6616-P3QW
• Description: TXRX MULTICHIP MOD LIN SIP 38QFN
• Manufacturer: Atmel
• Series: AVR® ATA66 LIN-SBCr

Specifications of ATA6616-P3QW

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, LIN, SPI, UART/USART, USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 16
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 38-VQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.10
4.10.1
90
I/O-Ports
Atmel ATA6616/ATA6617
Introduction
All AVR
ports. This means that the direction of one port pin can be changed without unintentionally
changing the direction of any other pin with the SBI and CBI instructions. The same applies
when changing drive value (if configured as output) or enabling/disabling of pull-up resistors (if
configured as input). Each output buffer has symmetrical drive characteristics with both high
sink and source capability. The pin driver is strong enough to drive LED displays directly. All
port pins have individually selectable pull-up resistors with a supply-voltage invariant resis-
tance. All I/O pins have protection diodes to both Vcc and Ground as indicated in
Refer to
parameters.
Figure 4-24. I/O Pin Equivalent Schematic
All registers and bit references in this section are written in general form. A lower case “x” rep-
resents the numbering letter for the port, and a lower case “n” represents the bit number.
However, when using the register or bit defines in a program, the precise form must be used.
For example, PORTB3 for bit no. 3 in Port B, here documented generally as PORTxn. The
physical I/O Registers and bit locations are listed in
page
Three I/O memory address locations are allocated for each port, one each for the Data Regis-
ter – PORTx, Data Direction Register – DDRx, and the Port Input Pins – PINx. The Port Input
Pins I/O location is read only, while the Data Register and the Data Direction Register are
read/write. However, writing a logic one to a bit in the PINx Register, will result in a toggle in
the corresponding bit in the Data Register. In addition, the Pull-up Disable – PUD bit in
MCUCR or PUDx in PORTCR disables the pull-up function for all pins in all ports when set.
Using the I/O port as General Digital I/O is described in
91. Most port pins are multiplexed with alternate functions for the peripheral features on the
device. How each alternate function interferes with the port pin is described in
Functions” on page
alternate 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.
109.
®
Section 4.23 “Electrical Characteristics” on page 267
ports have true Read-Modify-Write functionality when used as general digital I/O
Pxn
96. Refer to the individual module sections for a full description of the
C
pin
“Register Description for I/O Ports” on
"General Digital I/O" for
“Ports as General Digital I/O” on page
See Figure
R
Details
pu
Logic
for a complete list of
9132D–AUTO–12/10
“Alternate Port
Figure
4-24.