ATA5773-PXQW Atmel, ATA5773-PXQW Datasheet - Page 39
ATA5773-PXQW
Manufacturer Part Number
ATA5773-PXQW
Description
XMITTR UHF ASK/FSK 310MHZ 24VQFN
Manufacturer
Atmel
Datasheet
1.ATA5773-DK1.pdf
(219 pages)
Specifications of ATA5773-PXQW
Frequency
310MHz ~ 350MHz
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATA5773-PXQW
Manufacturer:
ATMEL
Quantity:
3 500
Part Number:
ATA5773-PXQW
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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4.9.10
4.9.10.1
4.9.10.2
9137E–RKE–12/10
Register Description
Oscillator Calibration Register – OSCCAL
Clock Prescale Register – CLKPR
The Oscillator Calibration Register is used to trim the Calibrated Internal RC Oscillator to
remove process variations from the oscillator frequency. A pre-programmed calibration value
is automatically written to this register during chip reset, giving the Factory calibrated fre-
quency as specified in
to change the oscillator frequency. The oscillator can be calibrated to frequencies as specified
in
Note that this oscillator is used to time EEPROM and Flash write accesses, and these write
times will be affected accordingly. If the EEPROM or Flash are written, do not calibrate to
more than 8.8 MHz. Otherwise, the EEPROM or Flash write may fail.
The CAL7 bit determines the range of operation for the oscillator. Setting this bit to 0 gives the
lowest frequency range, setting this bit to 1 gives the highest frequency range. The two fre-
quency ranges are overlapping, in other words a setting of OSCCAL = 0x7F gives a higher
frequency than OSCCAL = 0x80.
The CAL6..0 bits are used to tune the frequency within the selected range. A setting of 0x00
gives the lowest frequency in that range, and a setting of 0x7F gives the highest frequency in
the range.
• Bit 7 – CLKPCE: Clock Prescaler Change Enable
The CLKPCE bit must be written to logic one to enable change of the CLKPS bits. The CLK-
PCE bit is only updated when the other bits in CLKPR are simultaniosly written to zero.
CLKPCE is cleared by hardware four cycles after it is written or when the CLKPS bits are writ-
ten. Rewriting the CLKPCE bit within this time-out period does neither extend the time-out
period, nor clear the CLKPCE bit.
• Bits 6..4 – Res: Reserved Bits
These bits are reserved bits in the Atmel
• Bits 3..0 – CLKPS3..0: Clock Prescaler Select Bits 3 - 0
These bits define the division factor between the selected clock source and the internal sys-
tem clock. These bits can be written run-time to vary the clock frequency to suit the application
requirements. As the divider divides the master clock input to the MCU, the speed of all syn-
chronous peripherals is reduced when a division factor is used. The division factors are given
in
Bit
0x31 (0x51)
Read/Write
Initial Value
Bit
0x26 (0x46)
Read/Write
Initial Value
Table 8-1 on page
Table 4-12 on page
CLKPCE
CAL7
R/W
R/W
7
7
0
189. Calibration outside that range is not guaranteed.
40.
Table 8-1 on page
CAL6
R/W
R
6
6
–
0
Device Specific Calibration Value
CAL5
R/W
R
5
5
–
0
®
CAL4
189. The application software can write this register
ATtiny44V and will always read as zero.
R/W
R
4
–
0
4
CLKPS3
CAL3
R/W
R/W
3
3
Atmel ATA5771/73/74
CLKPS2
See Bit Description
CAL2
R/W
R/W
2
2
CLKPS1
CAL1
R/W
R/W
1
1
CLKPS0
CAL0
R/W
R/W
0
0
OSCCAL
CLKPR
39
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