ATmega640 Atmel Corporation, ATmega640 Datasheet - Page 383
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATmega640-16AU
Manufacturer:
OSRAM
Quantity:
12 000
Part Number:
ATmega640-16AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATmega640V-8AU
Manufacturer:
PHILIPS
Quantity:
56
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2549N–AVR–05/11
Figure 31-10. External Memory Timing (SRWn1 = 0, SRWn0 = 1)
Figure 31-11. External Memory Timing (SRWn1 = 1, SRWn0 = 0)
System Clock (CLK
System Clock (CLK
DA7:0 (XMBK = 0)
DA7:0 (XMBK = 0)
DA7:0
A15:8
CPU
ALE
WR
DA7:0
RD
A15:8
CPU
ALE
)
WR
RD
)
Prev. addr.
Prev. data
Prev. addr.
Prev. data
T1
T1
1
ATmega640/1280/1281/2560/2561
Address
Address
4
2
5
T2
6
1
3a
3b
Address
Address
4
2
XX
7
8
5
T2
6
13
3a
3b
10
XX
7
8
T3
13
10
Address
T3
Data
Address
12
Data
16
15
T4
9
Data
15
Data
16
12
9
T4
T5
11
11
T5
14
T6
14
383
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