ATmega64A Atmel Corporation, ATmega64A Datasheet - Page 23
ATmega64A
Manufacturer Part Number
ATmega64A
Description
Manufacturer
Atmel Corporation
Specifications of ATmega64A
Flash (kbytes)
64 Kbytes
Pin Count
64
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
53
Ext Interrupts
8
Usb Speed
No
Usb Interface
No
Spi
1
Twi (i2c)
1
Uart
2
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
4
Eeprom (bytes)
2048
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
4
Output Compare Channels
8
Input Capture Channels
2
Pwm Channels
7
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATmega64A-AU
Manufacturer:
ATMEL
Quantity:
4 500
Company:
Part Number:
ATmega64A-AU
Manufacturer:
Atmel
Quantity:
900
Company:
Part Number:
ATmega64A-AU
Manufacturer:
ATMEL85
Quantity:
900
Part Number:
ATmega64A-AU
Manufacturer:
AT
Quantity:
20 000
Company:
Part Number:
ATmega64A-MU
Manufacturer:
Atmel
Quantity:
5 200
7.5
7.5.1
8160C–AVR–07/09
External Memory Interface
Overview
With all the features that the External Memory Interface provides, it is well suited to operate as
an interface to memory devices such as external SRAM and Flash, and peripherals such as
LCD-display, A/D, and D/A. The main features are:
When the eXternal MEMory (XMEM) is enabled, address space outside the internal SRAM
becomes available using the dedicated external memory pins (see
13-3 on page
tion is shown in
Figure 7-4.
Note:
• Four different wait-state settings (Including no wait-state).
• Independent wait-state setting for different external memory sectors (configurable sector
• The number of bits dedicated to address high byte is selectable.
• Bus Keepers on data lines to minimize current consumption (optional).
size).
External Memory
(0-60K x 8)
1. ATmega64A in non ATmega103 compatibility mode: Memory Configuration A is available
(Memory Configuration B N/A).
ATmega64A in mega103 compatibility mode: Memory Configuration B is available (Memory
Configuration A N/A).
75,
External Memory with Sector Select
Figure
Table 13-9 on page
Memory Configuration A
Internal Memory
7-4.
Lower Sector
Upper Sector
SRW01
SRW00
SRW11
SRW10
79, and
0x0000
0x10FF
0x1100
0xFFFF
SRL[2..0]
Table 13-21 on page
External Memory
(1)
(0-60K x 8)
Memory Configuration B
Figure 1-1 on page
87). The memory configura-
Internal Memory
SRW10
ATmega64A
0x0000
0x0FFF
0x1000
0xFFFF
2,
Table
23