ATMEGA644PV-10PU Atmel, ATMEGA644PV-10PU Datasheet - Page 35

• Manufacturer Part Number: ATMEGA644PV-10PU
• Description: IC MCU AVR 64K FLASH 40-DIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA644PV-10PU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 40-DIP (0.600", 15.24mm)
• Processor Series: ATMEGA64x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: 2-Wire/JTAG/SPI/USART
• Maximum Clock Frequency: 10 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• Controller Family/series: AVR MEGA
• No. Of I/o's: 32
• Eeprom Memory Size: 2KB
• Ram Memory Size: 4KB
• Cpu Speed: 10MHz
• Rohs Compliant: Yes
• For Use With: ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFPATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8011O–AVR–07/10
The capacitance (Ce +Ci) needed at each TOSC pin can be calculated by using:
where:
Crystals specifying load capacitance (CL) higher than 8.0 pF, require external capacitors applied
as described in
When this oscillator is selected, start-up times are determined by the SUT Fuses and CKSEL0
as shown in
Table 6-9.
Note:
Power Conditions
BOD enabled
Fast rising power
Slowly rising power
BOD enabled
Fast rising power
Slowly rising power
– Ce - is optional external capacitors as described in Figure 8-2 on page29
– Ci - is the pin capacitance in table 8-8 on page 33
– CL - is the load capacitance for a 32.768 kHz crystal specified by the crystal vendor
– CS - 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.
Table
Start-up Times for the Low Frequency Crystal Oscillator Clock Selection
Figure 6-2 on page
6-9.
Start-up Time from
Power-down and
Reserved
Reserved
Power-save
32K CK
32K CK
32K CK
1K CK
1K CK
1K CK
31.
C
=
2 CL
⋅
ATmega164P/324P/644P
–
C
Additional Delay
14CK + 4.1 ms
s
14CK + 65 ms
14CK + 4.1 ms
14CK + 65 ms
(V
from Reset
CC
14CK
14CK
= 5.0V)
(1)
(1)
(1)
CKSEL0
0
0
0
0
1
1
1
1
SUT1..0
00
01
10
11
00
01
10
11
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