ATmega168P Atmel Corporation, ATmega168P Datasheet - Page 315
ATmega168P
Manufacturer Part Number
ATmega168P
Description
Manufacturer
Atmel Corporation
Specifications of ATmega168P
Flash (kbytes)
16 Kbytes
Pin Count
32
Max. Operating Frequency
20 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
23
Ext Interrupts
24
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
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
Yes
Crypto Engine
No
Sram (kbytes)
1
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
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
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
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Company
Part Number
Manufacturer
Quantity
Price
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Part Number:
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Manufacturer:
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120
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Manufacturer:
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Manufacturer:
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Manufacturer:
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29.6
8025M–AVR–6/11
SPI Timing Characteristics
See
Table 29-5.
Note:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Figure 29-4
Description
SCK period
SCK high/low
Rise/Fall time
Setup
Hold
Out to SCK
SCK to out
SCK to out high
SS low to out
SCK period
SCK high/low
Rise/Fall time
Setup
Hold
SCK to out
SCK to SS high
SS high to tri-state
SS low to SCK
1. In SPI Programming mode the minimum SCK high/low period is:
2. All DC Characteristics contained in this datasheet are based on simulation and characteriza-
- 2 t
- 3 t
tion of other AVR microcontrollers manufactured in the same process technology. These
values are preliminary values representing design targets, and will be updated after character-
ization of actual silicon.
SPI Timing Parameters
CLCL
CLCL
and
for f
for f
(1)
Figure 29-5
CK
CK
< 12 MHz
> 12 MHz
Mode
Master
Master
Master
Master
Master
Master
Master
Master
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
for details.
Min
4 • t
2 • t
10
t
20
20
ck
ck
ck
ATmega48P/88P/168P
Typ
See
50% duty cycle
3.6
10
10
0.5 • t
10
10
15
15
10
Table 19-5
sck
Max
1600
315
ns