ATMEGA32L-8AJ Atmel, ATMEGA32L-8AJ Datasheet - Page 149
ATMEGA32L-8AJ
Manufacturer Part Number
ATMEGA32L-8AJ
Description
IC MCU AVR 32K 5V 8MHZ 44-TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA32L-8AJ
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
Quantity
Price
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Parity Generator
Disabling the
Transmitter
2503Q–AVR–02/11
The Transmit Complete (TXC) Flag bit is set one when the entire frame in the transmit Shift
Register has been shifted out and there are no new data currently present in the transmit buffer.
The TXC Flag bit is automatically cleared when a transmit complete interrupt is executed, or it
can be cleared by writing a one to its bit location. The TXC Flag is useful in half-duplex
communication interfaces (like the RS485 standard), where a transmitting application must enter
receive mode and free the communication bus immediately after completing the transmission.
When the Transmit Compete Interrupt Enable (TXCIE) bit in UCSRB is set, the USART Transmit
Complete Interrupt will be executed when the TXC Flag becomes set (provided that global inter-
rupts are enabled). When the transmit complete interrupt is used, the interrupt handling routine
does not have to clear the TXC Flag, this is done automatically when the interrupt is executed.
The parity generator calculates the parity bit for the serial frame data. When parity bit is enabled
(UPM1 = 1), the transmitter control logic inserts the parity bit between the last data bit and the
first stop bit of the frame that is sent.
The disabling of the transmitter (setting the TXEN to zero) will not become effective until ongoing
and pending transmissions are completed, that is, when the transmit Shift Register and transmit
Buffer Register do not contain data to be transmitted. When disabled, the transmitter will no lon-
ger override the TxD pin.
ATmega32(L)
149
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