ATMEGA324P-A15MZ Atmel, ATMEGA324P-A15MZ Datasheet - Page 145
ATMEGA324P-A15MZ
Manufacturer Part Number
ATMEGA324P-A15MZ
Description
MCU AVR 32KB FLASH 15MHZ 44-VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA324P-A15MZ.pdf
(346 pages)
Specifications of ATMEGA324P-A15MZ
Package / Case
44-VQFN Exposed Pad
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Speed
16MHz
Number Of I /o
32
Eeprom Size
1K x 8
Core Processor
AVR
Program Memory Type
FLASH
Ram Size
2K x 8
Program Memory Size
32KB (32K x 8)
Data Converters
A/D 8x10b
Oscillator Type
Internal
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Connectivity
I²C, SPI, UART/USART
Core Size
8-Bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Parity Bit Calculation
2503N–AVR–06/08
The USART Character SiZe (UCSZ2:0) bits select the number of data bits in the frame. The
USART Parity mode (UPM1:0) bits enable and set the type of parity bit. The selection between
one or two stop bits is done by the USART Stop Bit Select (USBS) bit. The receiver ignores the
second stop bit. An FE (Frame Error) will therefore only be detected in the cases where the first
stop bit is zero.
The parity bit is calculated by doing an exclusive-or of all the data bits. If odd parity is used, the
result of the exclusive or is inverted. The relation between the parity bit and data bits is as
follows::
If used, the parity bit is located between the last data bit and first stop bit of a serial frame.
P
P
d
n
odd
even
Parity bit using even parity
Parity bit using odd parity
Data bit n of the character
P
P
even
odd
=
=
d
d
n 1
n 1
–
–
⊕
⊕
…
…
⊕
⊕
d
d
3
3
⊕
⊕
d
d
2
2
⊕
⊕
d
d
1
1
⊕
⊕
d
d
0
0
⊕
⊕
0
1
ATmega32(L)
145
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