ATA5771-PXQW Atmel, ATA5771-PXQW Datasheet - Page 21
ATA5771-PXQW
Manufacturer Part Number
ATA5771-PXQW
Description
XMITTR UHF ASK/FSK 868MHZ 24VQFN
Manufacturer
Atmel
Datasheet
1.ATA5773-DK1.pdf
(219 pages)
Specifications of ATA5771-PXQW
Frequency
868MHz ~ 928MHz
Modulation Or Protocol
UHF
Power - Output
8dBm
Voltage - Supply
2 V ~ 4 V
Current - Transmitting
9.8mA
Data Interface
PCB, Surface Mount
Memory Size
4kB Flash, 256B EEPROM, 256B SRAM
Antenna Connector
PCB, Surface Mount
Operating Temperature
-40°C ~ 85°C
Package / Case
24-VQFN Exposed Pad, 24-HVQFN, 24-SQFN, 24-DHVQFN
Processor Series
ATA5x
Core
AVR8
Data Bus Width
8 bit
Program Memory Type
Flash
Program Memory Size
4 KB
Data Ram Size
256 B
Interface Type
SPI, USI
Maximum Clock Frequency
4 MHz
Number Of Programmable I/os
12
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 12 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Applications
-
Sensitivity
-
Data Rate - Maximum
-
Current - Receiving
-
Lead Free Status / Rohs Status
Details
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Manufacturer
Quantity
Price
Company:
Part Number:
ATA5771-PXQW
Manufacturer:
ATMEL
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4.7.8.1
9137E–RKE–12/10
Interrupt Response Time
When using the SEI instruction to enable interrupts, the instruction following SEI will be exe-
cuted before any pending interrupts, as shown in this example.
The interrupt execution response for all the enabled Atmel
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.
Assembly Code Example
C Code Example
sei
sleep; enter sleep, waiting for interrupt
; note: will enter sleep before any pending
; interrupt(s)
_SEI(); /* set Global Interrupt Enable */
_SLEEP(); /* enter sleep, waiting for interrupt */
/* note: will enter sleep before any pending interrupt(s) */
; set Global Interrupt Enable
Atmel ATA5771/73/74
®
AVR
®
interrupts is four clock
21
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