ATMEGA325A-AU Atmel, ATMEGA325A-AU Datasheet - Page 20
ATMEGA325A-AU
Manufacturer Part Number
ATMEGA325A-AU
Description
IC MCU AVR 32K FLASH 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA325A-AU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 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
Available stocks
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Part Number
Manufacturer
Quantity
Price
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7.2.1
20
ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/645
Data Memory Access Times
Figure 7-2.
This section describes the general access timing concepts for internal memory access. The
internal data SRAM access is performed in two clk
20.
Figure 7-3.
Address
clk
Data Memory
On-chip Data SRAM Access Cycles
Data
Data
WR
CPU
RD
X 8
160 Ext I/O Reg.
64 I/O Registers
Data Memory
Compute Address
Internal SRAM
32 Registers
(1024 X 8)
(2048 x 8)
(4096 x 8)
T1
Memory Access Instruction
0x04FF/0x08FF/0x10FF
0x0000 - 0x001F
0x0020 - 0x005F
0x0060 - 0x00FF
0x0100
Address valid
CPU
T2
cycles as described in
Next Instruction
T3
Figure 7-3 on page
8285B–AVR–03/11
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