ATMEGA163L-4AC Atmel, ATMEGA163L-4AC Datasheet - Page 94

• Manufacturer Part Number: ATMEGA163L-4AC
• Description: IC AVR MCU 16K A/D 2.7V 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA163L-4AC

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 4MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

94
ATmega163(L)
wait9:in
nop
sbrs
rjmp
in
cpi
brne
in
ldi
out
sbrs
rjmp
in
cpi
brne
in
nop
ldi
out
r16, TWINT
wait8
r16, TWSR
r16, MR_DATA_ACK ; different from MR_DATA_ACK, go to ERROR
ERROR
r16, TWDR
r16, (1<<TWINT) | (1<<TWEN)
TWCR, r16
r16,TWCR
r16, TWINT
wait9
r16, TWSR
r16, MR_DATA_NACK ; different from MR_DATA_NACK, go to ERROR
ERROR
r16, TWDR
r16, (1<<TWINT) | (1<<TWSTO) | (1<<TWEN)
TWCR, r16
; data has been received and ACK returned
; Check value of TWI Status Register. If status
; 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
; receive last data byte. Signal this to slave by
; returning NACK
; Wait for TWINT flag set. This indicates that
; data has been received and NACK returned
; Check value of TWI Status Register. If status
; Input received data from TWDR.
;<do something with received data>
; Send STOP signal
1142E–AVR–02/03