ATA8742-PXQW Atmel, ATA8742-PXQW Datasheet - Page 65
ATA8742-PXQW
Manufacturer Part Number
ATA8742-PXQW
Description
MCU W/TRANSMITTER ASK/FSK 24QFN
Manufacturer
Atmel
Datasheet
1.ATA8742-PXQW.pdf
(238 pages)
Specifications of ATA8742-PXQW
Frequency
433MHz
Applications
Home Automation, Remote Sensing, RKE
Modulation Or Protocol
ASK, FSK
Data Rate - Maximum
32 kBit/s
Power - Output
7.5dBm
Current - Transmitting
9.8mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Memory Size
4kB Flash, 256B EEPROM, 256B SRAM
Voltage - Supply
2 V ~ 4 V
Operating Temperature
-40°C ~ 85°C
Package / Case
24-VQFN Exposed Pad, 24-HVQFN, 24-SQFN, 24-DHVQFN
Processor Series
ATA8x
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
8.1 MHz
Number Of Programmable I/os
12
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Development Tools By Supplier
ATASTK512-EK1-IND
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATA8742-PXQW
Manufacturer:
ATMEL
Quantity:
1 482
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9151A–INDCO–07/09
The following code example shows one assembly and one C function for turning off the WDT.
The example assumes that interrupts are controlled (e.g., by disabling interrupts globally) so that
no interrupts will occur during execution of these functions.
Note:
Assembly Code Example
C Code Example
WDT_off:
WDR
void WDT_off(void)
{
}
; Clear WDRF in MCUSR
ldi
out
; Write logical one to WDCE and WDE
; Keep old prescaler setting to prevent unintentional Watchdog Reset
in
ori r16, (1<<WDCE)|(1<<WDE)
out WDTCR, r16
; Turn off WDT
ldi r16, (0<<WDE)
out WDTCR, r16
ret
_WDR();
/* Clear WDRF in MCUSR */
MCUSR = 0x00
/* Write logical one to WDCE and WDE */
WDTCR |= (1<<WDCE) | (1<<WDE);
/* Turn off WDT */
WDTCR = 0x00;
1. See
r16, WDTCR
r16, (0<<WDRF)
MCUSR, r16
“About Code Examples” on page
(1)
(1)
22.
ATA8742
65
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