ATMEGA640V-8AU Atmel, ATMEGA640V-8AU Datasheet - Page 40
ATMEGA640V-8AU
Manufacturer Part Number
ATMEGA640V-8AU
Description
IC MCU AVR 64K FLASH 100-TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA640V-8AU
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
86
Program Memory Size
64KB (32K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 16x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Processor Series
ATMEGA64x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
8 KB
Interface Type
2-Wire, JTAG, SPI
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
86
Number Of Timers
8
Operating Supply Voltage
1.8 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 16 Channel
Controller Family/series
AVR MEGA
No. Of I/o's
86
Eeprom Memory Size
4KB
Ram Memory Size
8KB
Cpu Speed
8MHz
Rohs Compliant
Yes
For Use With
ATSTK600-TQFP100 - STK600 SOCKET/ADAPTER 100-TQFP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATAVRISP2 - PROGRAMMER AVR IN SYSTEMATSTK503 - STARTER KIT AVR EXP MODULE 100P
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA640V-8AU
Manufacturer:
PHILIPS
Quantity:
56
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9. System Clock and Clock Options
9.1
9.2
9.2.1
2549M–AVR–09/10
Overview
Clock Systems and their Distribution
CPU Clock – clk
This section describes the clock options for the AVR microcontroller.
Figure 9-1
need not be active at a given time. In order to reduce power consumption, the clocks to modules
not being used can be halted by using different sleep modes, as described in
ment and Sleep Modes” on page
Figure 9-1.
The CPU clock is routed to parts of the system concerned with operation of the AVR core.
Examples of such modules are the General Purpose Register File, the Status Register and the
data memory holding the Stack Pointer. Halting the CPU clock inhibits the core from performing
general operations and calculations.
CPU
Asynchronous
Timer/Counter
Timer/Counter
Oscillator
presents the principal clock systems in the AVR and their distribution. All of the clocks
Clock Distribution
General I/O
Modules
External Clock
clk
clk
ASY
I/O
ATmega640/1280/1281/2560/2561
52. The clock systems are detailed below.
System Clock
Control Unit
AVR Clock
Multiplexer
Prescaler
Clock
ADC
Source clock
clk
Oscillator
ADC
Crystal
CPU Core
clk
clk
Reset Logic
CPU
FLASH
Crystal Oscillator
Watchdog clock
Low-frequency
Watchdog Timer
RAM
Watchdog
Oscillator
“Power Manage-
Calibrated RC
Flash and
EEPROM
Oscillator
40
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