ATMEGA8-16MI Atmel, ATMEGA8-16MI Datasheet - Page 52
ATMEGA8-16MI
Manufacturer Part Number
ATMEGA8-16MI
Description
IC AVR MCU 8K 16MHZ IND 32-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA8-16MI
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
- Current page: 52 of 302
- Download datasheet (6Mb)
Ports as General
Digital I/O
Configuring the Pin
52
ATmega8(L)
The ports are bi-directional I/O ports with optional internal pull-ups.
a functional description of one I/O port pin, here generically called Pxn.
Figure 22. General Digital I/O
Note:
Each port pin consists of 3 Register bits: DDxn, PORTxn, and PINxn. As shown in
Description for I/O Ports” on page
PORTxn bits 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
be configured as an output pin. The port pins are tri-stated when a reset condition becomes
active, even if no clocks are running.
If PORTxn is written logic one when the pin is configured as an output pin, the port pin is driven
high (one). If PORTxn is written logic zero when the pin is configured as an output pin, the port
pin is driven low (zero).
Pxn
1. WPx, WDx, RRx, RPx, and RDx are common to all pins within the same port. clk
and PUD are common to all ports
PUD:
SLEEP:
clk
I/O
:
PULLUP DISABLE
SLEEP CONTROL
I/O CLOCK
(1)
65, the DDxn bits are accessed at the DDRx I/O address, the
SLEEP
SYNCHRONIZER
WDx:
RDx:
WPx:
RRx:
RPx:
D
L
Q
Q
D
PINxn
WRITE DDRx
READ DDRx
WRITE PORTx
READ PORTx REGISTER
READ PORTx PIN
Q
Q
Figure 22 on page 52
RESET
RESET
PORTxn
Q
Q
Q
Q
DDxn
CLR
CLR
D
D
2486Z–AVR–02/11
PUD
WDx
RDx
WPx
RRx
RPx
clk
I/O
I/O
“Register
, SLEEP,
shows
Related parts for ATMEGA8-16MI
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
IC AVR MCU 8K 16MHZ 5V 32TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 8K 16MHZ 5V 32-QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 8K 16MHZ 5V 28DIP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 8K 16MHZ COM 32-TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 8K 16MHZ IND 32-TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 8K 16MHZ COM 28-DIP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 8K 16MHZ IND 28-DIP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC AVR MCU 8K 16MHZ COM 32-QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 8KB FLASH 16MHZ 32QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU AVR 8K 5V 16MHZ 32-TQFP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU AVR 8K 5V 16MHZ 32-QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU AVR 8K 5V 16MHZ 28-DIP
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU AVR 8K 16MHZ 5V 32TQFP
Manufacturer:
Atmel
Datasheet: