ATmega640 Atmel Corporation, ATmega640 Datasheet - Page 369
ATmega640
Manufacturer Part Number
ATmega640
Description
Manufacturer
Atmel Corporation
Specifications of ATmega640
Flash (kbytes)
64 Kbytes
Pin Count
100
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
86
Ext Interrupts
32
Usb Speed
No
Usb Interface
No
Spi
5
Twi (i2c)
1
Uart
4
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
16
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
8
Eeprom (bytes)
4096
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
6
Output Compare Channels
16
Input Capture Channels
4
Pwm Channels
15
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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Quantity
Price
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31.2
31.2.1
2549N–AVR–05/11
5. Values with
Speed Grades
8MHz
5)The sum of all IOH, for ports F0-F7, K0-K7 should not exceed 100mA.
If IOH exceeds the test condition, VOH may exceed the related specification. Pins are not guaranteed to source current
greater than the listed test condition.
“PRR1 – Power Reduction Register 1”
Maximum frequency is depending on V
370, the Maximum Frequency vs. V
2.7V < V
Figure 31-1. Maximum Frequency vs. V
Figure 31-2. Maximum Frequency vs. V
Note:
1. When only using the Read-While-Write Section of the program memory, a higher speed can
CC
be achieved at low voltage, see
on page 317
< 4.5V.
8 MHz
4 MHz
8 MHz
2 MHz
ATmega2560V/ATmega2561V, is used
for addresses.
1.8V
1.8V
enabled (0xFF).
ATmega640/1280/1281/2560/2561
CC
curve is linear between 1.8V < V
CC.
“Read-While-Write and No Read-While-Write Flash Sections”
CC
CC
Safe Operating Area
Safe Operating Area
As shown in
, ATmega640V/1280V/1281V/2560V/2561V
when also No-Read-While-Write Section
2.7V
2.7V
Figure 31-1
trough
CC
5.5V
5.5V
Figure 31-4 on page
< 2.7V and between
(1)
,
369
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