ATTINY26L-8PU Atmel, ATTINY26L-8PU Datasheet - Page 87

• Manufacturer Part Number: ATTINY26L-8PU
• Description: IC MCU AVR 2K 5V 8MHZ 20-DIP
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY26L-8PU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• Connectivity: USI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 20-DIP (0.300", 7.62mm)
• Processor Series: ATTINY2x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 128 B
• Interface Type: 2-Wire/ISP/SM-Bus/SPI/UART/USI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 2
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 11-ch x 10-bit
• Controller Family/series: AVR Tiny
• No. Of I/o's: 16
• Eeprom Memory Size: 128Byte
• Ram Memory Size: 128Byte
• Cpu Speed: 8MHz
• Rohs Compliant: Yes
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEMATSTK505 - ADAPTER KIT FOR 14PIN AVR MCU
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ATTINY26L-8PJ; ATTINY26L-8PJ

SPI Slave Operation Example
1477F–AVR–12/04
The following code demonstrates how to use the USI module as a SPI Master with max-
imum speed (fsck = fck/2):
The following code demonstrates how to use the USI module as a SPI slave:
The code is size optimized using only 8 instructions (+ ret). The code example assumes
that the DO is configured as output and SCK pin is configured as input in the DDRB
Register. The value stored in register r16 prior to the function is called is transferred to
SPITransfer_Fast:
ret
init:
...
SlaveSPITransfer:
SlaveSPITransfer_loop:
out
ldi
ldi
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
in
ldi
out
out
ldi
out
sbis
rjmp
in
ret
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
r16,(1<<USIWM0)+(1<<USICS1)
USICR,r16
USIDR,r16
r16,(1<<USIOIF)
USISR,r16
USISR,USIOIF
SlaveSPITransfer_loop
r16,USIDR
ATtiny26(L)
87