ATMEGA6490A-AU Atmel, ATMEGA6490A-AU Datasheet - Page 78
![IC MCU AVR 64K FLASH 100TQFP](/photos/6/70/67048/313-100-tqfp_sml.jpg)
ATMEGA6490A-AU
Manufacturer Part Number
ATMEGA6490A-AU
Description
IC MCU AVR 64K FLASH 100TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA6490A-AU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
69
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)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TFQFP
Processor Series
ATmega
Core
AVR
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
SPI, USART
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
69
Number Of Timers
3
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA6490A-AU
Manufacturer:
Atmel
Quantity:
1 250
Company:
Part Number:
ATMEGA6490A-AUR
Manufacturer:
Maxim
Quantity:
43
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13.3.3
8284A–AVR–10/10
Alternate Functions of Port C
The Port C has an alternate function as SEG for the LCD Controller.
Table 13-9.
The alternate pin configuration is as follows:
• SEG – Port D, Bit 7:0
SEG, LCD front plane 5/5, 6/6, 11/7-16/12.
Table 13-10
shown in
Table 13-10. Overriding Signals for Alternate Functions in PC7:PC4
Signal Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
ATmega169A/169PA/329A/329PA/649A/649P/3290A/3290PA/6490A/6490P
Port Pin
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
Figure 13-5 on page
and
Port C Pins Alternate Functions (SEG refers to 100-pin/64-pin pinout)
Alternate Function
SEG (LCD Front Plane 5/5)
SEG (LCD Front Plane 6/6)
SEG (LCD Front Plane 11/7)
SEG (LCD Front Plane 12/8)
SEG (LCD Front Plane 13/9)
SEG (LCD Front Plane14/10)
SEG (LCD Front Plane 15/11)
SEG (LCD Front Plane 16/12)
PC7/SEG5
LCDEN
0
LCDEN
0
0
0
–
LCDEN
0
–
LCDSEG
Table 13-11
72.
relate the alternate functions of Port C to the overriding signals
PC6/SEG6
LCDEN
0
LCDEN
0
0
0
–
LCDEN
0
–
LCDSEG
PC5/SEG(11/7)
LCDEN
0
LCDEN
0
0
0
–
LCDEN
0
–
LCDSEG
PC4/SEG(12/8)
LCDEN
0
LCDEN
0
0
0
–
LCDEN
0
–
LCDSEG
78
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