ATMEGA64L-8MI Atmel, ATMEGA64L-8MI Datasheet - Page 31

• Manufacturer Part Number: ATMEGA64L-8MI
• Description: IC AVR MCU 64K 8MHZ IND 64-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA64L-8MI

• 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-MLF®, 64-QFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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
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