ATMEGA64A-ANR Atmel, ATMEGA64A-ANR Datasheet - Page 23
ATMEGA64A-ANR
Manufacturer Part Number
ATMEGA64A-ANR
Description
IC MCU AVR 64K FLASH 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheets
1.ATMEGA64A-MUR.pdf
(21 pages)
2.ATMEGA64A-AU.pdf
(392 pages)
3.ATMEGA64A-AU.pdf
(3 pages)
Specifications of ATMEGA64A-ANR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
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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
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