ATTINY461V-10PU Atmel, ATTINY461V-10PU Datasheet - Page 83
ATTINY461V-10PU
Manufacturer Part Number
ATTINY461V-10PU
Description
Microcontrollers (MCU) 4kB Flash 0.256kB EEPROM 16 I/O Pins
Manufacturer
Atmel
Specifications of ATTINY461V-10PU
Processor Series
ATTINY4x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
2-Wire/SPI/USI
Maximum Clock Frequency
10 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
Minimum Operating Temperature
- 40 C
On-chip Adc
11-ch x 10-bit
Program Memory Type
Flash
Program Memory Size
4 KB
Package / Case
PDIP-20
Package
20PDIP
Device Core
AVR
Family Name
ATtiny
Maximum Speed
10 MHz
Ram Size
256 Byte
Operating Temperature
-40 to 85 °C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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11.9.1
2588E–AVR–08/10
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.
83
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