ATmega329 Atmel Corporation, ATmega329 Datasheet - Page 331
ATmega329
Manufacturer Part Number
ATmega329
Description
Manufacturer
Atmel Corporation
Specifications of ATmega329
Flash (kbytes)
32 Kbytes
Pin Count
64
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
54
Ext Interrupts
17
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Segment Lcd
100
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
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28.6
2552K–AVR–04/11
SPI Timing Characteristics
See
Table 28-6.
Note:
Figure 28-4. SPI Interface Timing Requirements (Master Mode)
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
Figure 28-4
(Data Output)
(Data Input)
(CPOL = 0)
(CPOL = 1)
1. In SPI Programming mode the minimum SCK high/low period is:
SS high to tri-state
SCK to out high
SCK to SS high
- 2 t
- 3 t
MISO
MOSI
SCK high/low
SS low to SCK
Rise/Fall time
Rise/Fall time
SCK
SCK
SCK high/low
SS low to out
Description
SCK period
SCK period
Out to SCK
SCK to out
SCK to out
SS
SPI Timing Parameters
CLCL
CLCL
Setup
Setup
Hold
Hold
and
for f
for f
Figure 28-5
CK
CK
(1)
< 12MHz
> 12MHz
6
4
MSB
5
MSB
for details.
Master
Master
Master
Master
Master
Master
Master
Master
Mode
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
7
20 • t
4 • t
2 • t
ATmega329/3290/649/6490
Min
10
20
t
ck
...
ck
ck
ck
...
See
50% duty cycle
0.5 • t
Table 18-5
Typ
3.6
1.6
10
10
10
10
15
15
10
2
sck
LSB
1
LSB
2
Max
3
8
ns
µs
ns
331
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