ATA5773-DK1 Atmel, ATA5773-DK1 Datasheet - Page 168

• Manufacturer Part Number: ATA5773-DK1
• Description: BOARD XMITTER FOR ATA5773 315MHZ
• Manufacturer: Atmel
• Type: Transmitterr

Specifications of ATA5773-DK1

• Frequency: 315MHz
• Maximum Frequency: 315 MHz
• Supply Voltage (max): 4 V
• Supply Voltage (min): 2 V
• Supply Current: 9 mA
• Product: RF Development Tools
• For Use With/related Products: ATA5773
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.23.2.1
4.23.3
4.23.4
168
Atmel ATA5771/73/74
Signature Bytes
Calibration Byte
Latching of Fuses
Table 4-60.
Notes:
The status of the Fuse bits is not affected by Chip Erase. Note that the Fuse bits are locked if
Lock bit1 (LB1) is programmed. Program the Fuse bits before programming the Lock bits.
The fuse values are latched when the device enters programming mode and changes of the
fuse values will have no effect until the part leaves Programming mode. This does not apply to
the EESAVE Fuse which will take effect once it is programmed. The fuses are also latched on
Power-up in Normal mode.
All Atmel
code can be read in both serial and High-voltage Programming mode, also when the device is
locked. The three bytes reside in a separate address space. For the ATtiny44V the signature
bytes are given in
Table 4-61.
Signature area of the ATtiny44V has one byte of calibration data for the internal RC Oscillator.
This byte resides in the high byte of address 0x000. During reset, this byte is automatically
written into the OSCCAL Register to ensure correct frequency of the calibrated RC Oscillator.
Fuse Low Byte
CKDIV8
CKOUT
SUT1
SUT0
CKSEL3
CKSEL2
CKSEL1
CKSEL0
Atmel Parts
ATtiny44V
1. See
2. The default value of SUT1..0 results in maximum start-up time for the default clock source.
3. The default setting of CKSEL3..0 results in internal RC Oscillator @ 8.0 MHz. See
(1)
®
microcontrollers have a three-byte signature code which identifies the device. This
See
on page 36
Fuse Low Byte
Device ID
Section 4.9.9 “System Clock Prescaler” on page 38
Table 4-9 on page 36
Table
for details.
4-61.
Bit No
7
6
5
4
3
2
1
0
0x000
0x1E
for details.
Description
Divide clock by 8
Clock Output Enable
Select start-up time
Select start-up time
Select Clock source
Select Clock source
Select Clock source
Select Clock source
Signature Bytes Address
0x001
0x92
for details.
1 (unprogrammed)
0 (programmed)
0 (programmed)
0 (programmed)
0 (programmed)
Default Value
0 (programmed)
1 (unprogrammed)
1 (unprogrammed)
0x002
9137E–RKE–12/10
0x07
(2
(3)
(3)
(3)
(2
(3)
Table 4-8