AT90PWM81-16MN Atmel, AT90PWM81-16MN Datasheet - Page 15

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AT90PWM81-16MN

Manufacturer Part Number
AT90PWM81-16MN
Description
IC MCU AVR 8K FLASH ISP 32QFN
Manufacturer
Atmel
Series
AVR® 90PWM Lightingr
Datasheet

Specifications of AT90PWM81-16MN

Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI
Peripherals
Brown-out Detect/Reset, PWM, WDT
Number Of I /o
20
Program Memory Size
8KB (8K x 8)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b; D/A 1x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 105°C
Package / Case
32-MLF®, QFN
For Use With
ATSTK600-SOIC - STK600 SOCKET/ADAPTER FOR SOIC
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AT90PWM81-16MN
Manufacturer:
Atmel
Quantity:
2 446
3.8.2
7734P–AVR–08/10
Interrupt Response Time
The interrupt execution response for all the enabled AVR interrupts is four clock cycles minimum. After
four clock cycles the program vector address for the actual interrupt handling routine is executed. During
this four clock cycle period, the Program Counter is pushed onto the Stack. The vector is normally a jump
to the interrupt routine, and this jump takes three clock cycles. If an interrupt occurs during execution of a
multi-cycle instruction, this instruction is completed before the interrupt is served. If an interrupt occurs
when the MCU is in sleep mode, the interrupt execution response time is increased by four clock cycles.
This increase comes in addition to the start-up time from the selected sleep mode.
A return from an interrupt handling routine takes four clock cycles. During these four clock cycles, the
Program Counter (two bytes) is popped back from the Stack, the Stack Pointer is incremented by two, and
the I-bit in SREG is set.
C Code Example
_SEI(); /* set Global Interrupt Enable */
_SLEEP(); /* enter sleep, waiting for interrupt */
/* note: will enter sleep before any pending interrupt(s) */
AT90PWM81
15

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