ATTINY461A-XUR Atmel, ATTINY461A-XUR Datasheet - Page 126
ATTINY461A-XUR
Manufacturer Part Number
ATTINY461A-XUR
Description
MCU AVR 4K FLASH 20MHZ 20TSSOP
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY461A-MU.pdf
(292 pages)
Specifications of ATTINY461A-XUR
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
16
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 126 of 292
- Download datasheet (9Mb)
126
ATtiny261A/461A/861A
The code is size optimized using only eight instructions (plus return). The code example
assumes that the DO and USCK pins have been enabled as outputs in DDRA. The value stored
in register r16 prior to the function is called is transferred to the slave device, and when the
transfer is completed the data received from the slave is stored back into the register r16.
The second and third instructions clear the USI Counter Overflow Flag and the USI counter
value. The fourth and fifth instructions set three-wire mode, positive edge clock, count at USITC
strobe, and toggle USCK. The loop is repeated 16 times.
The following code demonstrates how to use the USI as an SPI master with maximum speed
(f
SCK
SPITransfer_Fast:
ret
= f
CK
sbrs
rjmp
lds
ret
out
ldi
ldi
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
in
/2):
r16, USIOIF
SPITransfer_loop
r16,USIDR
USIDR,r16
r16,(1<<USIWM0)|(0<<USICS0)|(1<<USITC)
r17,(1<<USIWM0)|(0<<USICS0)|(1<<USITC)|(1<<USICLK)
USICR,r16 ; MSB
USICR,r17
USICR,r16
USICR,r17
USICR,r16
USICR,r17
USICR,r16
USICR,r17
USICR,r16
USICR,r17
USICR,r16
USICR,r17
USICR,r16
USICR,r17
USICR,r16 ; LSB
USICR,r17
r16,USIDR
8197B–AVR–01/10
Related parts for ATTINY461A-XUR
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
Part Number:
Description:
IC AVR MCU 4K 20MHZ 32-QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU AVR 4K FLASH 20MHZ 20SOIC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 4K FLASH 15MHZ 32-QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 4KB FLASH 15MHZ 32-VQFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
MCU AVR 4KB FLASH 20MHZ 20SOIC
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC MCU AVR 4K 20MHZ 32QFN
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
Microcontrollers (MCU) 4kB Flash 0.256kB EEPROM 16 I/O Pins
Manufacturer:
Atmel
Datasheet:
Part Number:
Description:
IC, MCU, 8BIT, 2K FLASH, 20SOIC
Manufacturer:
Atmel
Datasheet: