ATmega3290A Atmel Corporation, ATmega3290A Datasheet - Page 355

• Manufacturer Part Number: ATmega3290A
• Manufacturer: Atmel Corporation

Specifications of ATmega3290A

• Flash (kbytes): 32 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 69
• Ext Interrupts: 32
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Segment Lcd: 160
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 2
• Eeprom (bytes): 1024
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

29.9
Table 29-19. SPI Timing Parameters
Notes:
8284D–AVR–6/11
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
SPI Timing Characteristics
1. In SPI Programming mode the minimum SCK high/low period is:
- 2 t
- 3 t
CLCL
CLCL
SS high to tri-state
SCK to out high
SCK to SS high
SCK high/low
for f
for f
SS low to SCK
SCK high/low
Rise/Fall time
Rise/Fall time
SS low to out
Description
ATmega169A/PA/329A/PA/3290A/PA/649A/P/6490A/P
SCK period
Out to SCK
SCK period
SCK to out
SCK to out
CK
CK
Setup
Setup
Hold
Hold
< 12MHz
> 12MHz
See
Figure 29-4. SPI Interface Timing Requirements (Master Mode)
Figure 29-4 on page 355
(1)
(Data Output)
(Data Input)
(CPOL = 0)
(CPOL = 1)
MISO
MOSI
SCK
SCK
SS
Master
Master
Master
Master
Master
Master
Master
Master
Mode
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
6
4
MSB
5
MSB
and
Figure 29-5 on page 356
20 • t
4 • t
2 • t
Min
10
20
t
7
ck
ck
ck
ck
...
See
...
Table 19-5 on page 174
50% duty cycle
0.5 • t
Typ
3.6
1.6
10
10
10
10
15
15
10
for details.
sck
2
LSB
1
LSB
2
Max
3
8
ns
µs
ns
355