ATTINY861A-XUR Atmel, ATTINY861A-XUR Datasheet - Page 81
ATTINY861A-XUR
Manufacturer Part Number
ATTINY861A-XUR
Description
MCU AVR 8KB FLASH 20MHZ 20TSSOP
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATTINY461A-MU.pdf
(292 pages)
Specifications of ATTINY861A-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
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY861A-XUR
Manufacturer:
IDT
Quantity:
1 300
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11.9.1
8197B–AVR–01/10
Reusing the temporary high byte register
The following code examples show how to do an atomic write of the TCNT0H/L register con-
tents. Writing any of the OCR0A/B registers can be done by using the same principle.
Note:
The assembly code example requires that the r17:r16 register pair contains the value to be writ-
ten to TCNT0H/L.
If writing to more than one 16-bit register where the high byte is the same for all registers written,
then the high byte only needs to be written once. However, note that the same rule of atomic
operation described previously also applies in this case.
Assembly Code Example
TIM0_WriteTCNT0:
C Code Example
void TIM0_WriteTCNT0( unsigned int i )
{
}
; Save global interrupt flag
in r18,SREG
; Disable interrupts
cli
; Set TCNT0 to r17:r16
out TCNT0H,r17
out TCNT0L,r16
; Restore global interrupt flag
out SREG,r18
ret
unsigned char sreg;
/* Save global interrupt flag */
sreg = SREG;
/* Disable interrupts */
_CLI();
/* Set TCNT0 to i */
TCNT0H = (i >> 8);
TCNT0L = (unsigned char)i;
/* Restore global interrupt flag */
SREG = sreg;
See
“Code Examples” on page
6.
81
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