ATMEGA1284PR231-AU Atmel, ATMEGA1284PR231-AU Datasheet - Page 33

• Manufacturer Part Number: ATMEGA1284PR231-AU
• Description: BUNDLE ATMEGA1284P/RF231 TQFP
• Manufacturer: Atmel

Specifications of ATMEGA1284PR231-AU

• Frequency: 2.4GHz
• Modulation Or Protocol: 802.15.4 Zigbee, 6LoWPAN, RF4CE, SP100, WirelessHART™, ISM
• Data Interface: PCB, Surface Mount
• Memory Size: 128kB Flash, 4kB EEPROM, 16kB RAM
• Antenna Connector: PCB, Surface Mount
• Package / Case: 44-TQFP, 44-VQFP
• Processor Series: ATMEGA128x
• Core: AVR8
• Data Bus Width: 8 bit
• Program Memory Type: Flash
• Program Memory Size: 128 KB
• Data Ram Size: 16 KB
• Development Tools By Supplier: ATAVRRZ541, ATAVRRAVEN, ATAVRRZUSBSTICK, ATAVRISP2, ATAVRRZ201
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Power - Output: -
• Operating Temperature: -
• Applications: -
• Sensitivity: -
• Data Rate - Maximum: -
• Current - Transmitting: -
• Current - Receiving: -
• Lead Free Status / Rohs Status: Details

8059D–AVR–11/09
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
32, require external capacitors applied as described in
Figure 7-3.
Table 7-9.
Crystals specifying load capacitance (CL) higher than 8.0 pF, require external capacitors applied
as described in
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 7-10.
Note:
Power Conditions
BOD enabled
Fast rising power
Slowly rising power
BOD enabled
Fast rising power
Slowly rising power
S
- is the total stray capacitance for one TOSC pin.
1. These options should only be used if frequency stability at start-up is not important for the
application.
Min. (pF)
Table
TBD
Crystal Oscillator Connections
Low-frequency Crystal Oscillator Internal load Capacitance
Start-up Times for the Low Frequency Crystal Oscillator Clock Selection
Figure 7-2 on page
7-10.
Start-up Time from
Power-down and
Table 7-8 on page 32
Reserved
Reserved
Power-save
32K CK
32K CK
32K CK
1K CK
1K CK
1K CK
29.
Typ. (pF)
8.0
Figure 7-2 on page 29
TOSC2
TOSC1
Additional Delay
14CK + 4.1 ms
14CK + 65 ms
Figure 7-2 on page
14CK + 4.1 ms
14CK + 65 ms
(V
from Reset
CC
14CK
14CK
= 5.0V)
(1)
(1)
(1)
ATmega1284P
29.
CKSEL0
Max. (pF)
Table 7-8 on page
TBD
0
0
0
0
1
1
1
1
SUT1..0
00
01
10
11
00
01
10
11
33