ATMEGA163-8AI Atmel, ATMEGA163-8AI Datasheet - Page 99

• Manufacturer Part Number: ATMEGA163-8AI
• Description: IC AVR MCU 16K A/D 8MHZ 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA163-8AI

• 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: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 4 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: Contains lead / RoHS non-compliant

Assembly Code Example –
Slave Transmitter Mode
1142E–AVR–02/03
; Part specific include file and TWI include file must be included.
; <Initialize registers, including TWAR, TWBR and TWCR>
Transmitter Mode
; <Receive START condition and SLA+R>
wait14:in
; <Send more data bytes if needed>
wait15: in
wait16:in
ldi
out
sbrs r16, TWINT
rjmp wait14
in
cpi
brne ERROR
ldi
out
ldi
out
sbrs
rjmp
in
cpi
brne
ldi
out
ldi
out
sbrs
rjmp
in
cpi
brne
ldi
out
ldi
out
r16, (1<<TWINT) | (1<<TWEA) | (1<<TWEN)
TWCR, r16
r16,TWCR
r16, TWSR
r16, ST_SLA_ACK; different from ST_SLA_ACK, go to ERROR
r16, 0x33
TWDR, r16
r16, (1<<TWINT) | (1<<TWEA) | (1<<TWEN)
TWCR, r16
r16, TWINT ; data has been transmitted, and ACK/NACK has
wait15
r16, TWSR
r16, ST_DATA_ACK ; different from ST_DATA_ACK, go to ERROR
ERROR
r16, 0x44
TWDR, r16
r16, (1<<TWINT) | (1<<TWEA) | (1<<TWEN)
TWCR, r16
r16,TWCR
r16, TWINT ; data has been transmitted, and ACK/NACK has
wait16
r16, TWSR
r16, ST_DATA_ACK ; different from ST_DATA_ACK, go to ERROR
ERROR
r16, 0x55
TWDR, r16
r16, (1<<TWINT) | (1<<TWEN)
TWCR, r16
r16,TWCR ; Wait for TWINT flag set. This indicates that
; Wait for TWINT flag set. This indicates that
; SLA+R has been received, and ACK/NACK has
; been returned
; Check value of TWI Status Register. If status
; Load data (here, data = 0x33) into TWDR Register
; Clear TWINT bit in TWCR to start transmission of
; data. Setting TWEA indicates that ACK should be
; received when transfer finished
; been received
; Check value of TWI Status Register. If status
; Load data (here, data = 0x44) into TWDR Register
; Clear TWINT bit in TWCR to start transmission of
; data. Setting TWEA indicates that ACK should be
; received when transfer finished
; Wait for TWINT flag set. This indicates that
; been received
; Check value of TWI Status Register. If status
; Load data (here, data = 0x55) into TWDR Register
; Clear TWINT bit in TWCR to start transmission of
; data. Not setting TWEA indicates that NACK should
; Enable TWI in Slave
ATmega163(L)
99