ATMEGA256RZAV-8AU Atmel, ATMEGA256RZAV-8AU Datasheet - Page 46
![MCU ATMEGA2561/AT86RF230 64-TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA256RZAV-8AU
Manufacturer Part Number
ATMEGA256RZAV-8AU
Description
MCU ATMEGA2561/AT86RF230 64-TQFP
Manufacturer
Atmel
Series
ATMEGAr
Datasheets
1.ATMEGA640V-8CU.pdf
(38 pages)
2.ATMEGA640V-8CU.pdf
(444 pages)
3.AT86RF230-ZU.pdf
(98 pages)
Specifications of ATMEGA256RZAV-8AU
Frequency
2.4GHz
Modulation Or Protocol
802.15.4 Zigbee
Applications
ISM, ZigBee™
Power - Output
3dBm
Sensitivity
-101dBm
Voltage - Supply
1.8 V ~ 3.6 V
Current - Receiving
15.5mA
Current - Transmitting
16.5mA
Data Interface
PCB, Surface Mount
Memory Size
256kB Flash, 4kB EEPROM, 8kB RAM
Antenna Connector
PCB, Surface Mount
Package / Case
64-TQFP
Wireless Frequency
2.4 GHz
Interface Type
JTAG, SPI
Output Power
3 dBm
For Use With
ATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Operating Temperature
-
Data Rate - Maximum
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
ATmega256
- Current page: 46 of 444
- Download datasheet (10Mb)
9.7
2549M–AVR–09/10
Calibrated Internal RC Oscillator
The capacitance (Ce + Ci) needed at each XTAL/TOSC pin can be calculated by using:
where:
Ce - is optional external capacitors as described in
Ci - is is the pin capacitance in
CL - is the load capacitance for a 32.768 kHz crystal specified by the crystal vendor.
C
Crystals specifying load capacitance (CL) higher than the ones given in the
45, require external capacitors applied as described in
Figure 9-3.
To find suitable load capacitance for a 32.768 kHz crysal, please consult the crystal datasheet.
When this oscillator is selected, start-up times are determined by the SUT Fuses and CKSEL0
as shown in
Table 9-8.
Note:
By default, the Internal RC Oscillator provides an approximate 8 MHz clock. Though voltage and
temperature dependent, this clock can be very accurately calibrated by the user. See
on page 371
with the CKDIV8 Fuse programmed. See
S
- is the total stray capacitance for one XTAL/TOSC pin.
Slowly rising power
Slowly rising power
Power Conditions
Fast rising power
Fast rising power
BOD enabled
BOD enabled
1. These options should only be used if frequency stability at start-up is not important for the
application.
Table
and
Crystal Oscillator Connections
Start-up Times for the Low Frequency Crystal Oscillator Clock Selection
“Internal Oscillator Speed” on page 403
9-8.
Start-up Time from
Power-down and
Table 9-7 on page
Reserved
Reserved
ATmega640/1280/1281/2560/2561
Power-save
32K CK
32K CK
32K CK
1K CK
1K CK
1K CK
Ce
+
“System Clock Prescaler” on page 49
Ci
=
2 CL
⋅
45.
Figure 9-2 on page
–
Additional Delay
14CK + 4.1 ms
14CK + 65 ms
Figure 9-2 on page
14CK + 4.1 ms
14CK + 65 ms
C
(V
from Reset
s
for more details. The device is shipped
CC
14CK
14CK
= 5.0V)
(1)
(1)
(1)
43.
43.
CKSEL0
Table 9-7 on page
0
0
0
0
1
1
1
1
for more details.
Table 30-1
SUT1:0
00
01
10
11
00
01
10
11
46
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