ATMEGA323-8PC Atmel, ATMEGA323-8PC Datasheet - Page 119
ATMEGA323-8PC
Manufacturer Part Number
ATMEGA323-8PC
Description
IC AVR MCU 32K 8MHZ COM 40DIP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA323L-4PC.pdf
(247 pages)
Specifications of ATMEGA323-8PC
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)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
ATMEGA3238PC
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1457G–AVR–09/03
wait12:in
wait13:in
;<Wait for next data transmission or do something else>
sbrs r16, TWINT
rjmp wait12
in
cpi
brne ERROR
in
nop
ldi
out
sbrs r16, TWINT
rjmp wait13
in
cpi
brne ERROR
in
nop
ldi
out
r16,TWCR
r16, TWSR
r16, SR_DATA_ACK
r16, TWDR
r16, (1<<TWINT) | (1<<TWEN)
TWCR, r16
r16,TWCR
r16, TWSR
r16, SR_DATA_NACK
r16, TWDR
r16, (1<<TWINT) | (1<<TWEA) | (1<<TWEN)
TWCR, r16
; ACK should be returned after receiving first
; data byte
; Wait for TWINT Flag set. This indicates that
; data has been received and ACK returned
; Check value of TWI Status Register. If status
; different from SR_DATA_ACK, go to ERROR
; Input received data from TWDR.
;<do something with received data>
; Clear TWINT bit in TWCR to start reception of
; data. Not setting TWEA causes NACK to be
; returned after reception of next data byte
; Wait for TWINT Flag set. This indicates that
; data has been received and NACK returned
; Check value of TWI Status Register. If status
; different from SR_DATA_NACK, go to ERROR
; Input received data from TWDR.
;<do something with received data>
; Clear TWINT bit in TWCR to start reception of
; data. Setting TWEA causes TWI unit to enter
; not addressed Slave mode with recognition of
; own SLA
ATmega323(L)
119
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