ATMEGA64L-8AQR Atmel, ATMEGA64L-8AQR Datasheet - Page 31
ATMEGA64L-8AQR
Manufacturer Part Number
ATMEGA64L-8AQR
Description
IC MCU AVR 64K FLASH 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA64L-8AQR
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
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
64-TQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Part Number
Manufacturer
Quantity
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2490Q–AVR–06/10
Figure 15. External Data Memory Cycles with SRWn1 = 1 and SRWn0 = 0
Note:
Figure 16. External Data Memory Cycles with SRWn1 = 1 and SRWn0 = 1
Note:
System Clock (CLK
System Clock (CLK
1. SRWn1 = SRW11 (upper sector) or SRW01 (lower sector), SRWn0 = SRW10 (upper sector) or
1. SRWn1 = SRW11 (upper sector) or SRW01 (lower sector), SRWn0 = SRW10 (upper sector) or
DA7:0 (XMBK = 0)
DA7:0 (XMBK = 1)
DA7:0 (XMBK = 0)
DA7:0 (XMBK = 1)
SRW00 (lower sector).
The ALE pulse in period T6 is only present if the next instruction accesses the RAM (internal
or external).
SRW00 (lower sector).
The ALE pulse in period T7 is only present if the next instruction accesses the RAM (internal
or external).
DA7:0
A15:8
DA7:0
A15:8
CPU
ALE
WR
CPU
RD
ALE
WR
RD
)
)
Prev. Addr.
Prev. Data
Prev. Data
Prev. Data
Prev. Addr.
Prev. Data
Prev. Data
Prev. Data
T1
T1
Address
Address
Address
Address
Address
T2
Address
T2
XX
XX
Data
Address
T3
Data
Data
Address
T3
Data
Data
Data
T4
T4
T5
T5
ATmega64(L)
T6
(1)
(1)
T6
T7
31
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