ATmega165P Atmel Corporation, ATmega165P Datasheet - Page 195
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ATmega165P
Manufacturer Part Number
ATmega165P
Description
Manufacturer
Atmel Corporation
Specifications of ATmega165P
Flash (kbytes)
16 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
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)
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
4
Input Capture Channels
1
Pwm Channels
4
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATmega165PV-8AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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19.3.5
19.3.6
19.4
19.4.1
19.4.2
19.4.3
19.4.4
19.4.5
8019K–AVR–11/10
Alternative USI Usage
Start Condition Detector
Clock speed considerations
Half-duplex Asynchronous Data Transfer
4-bit Counter
12-bit Timer/Counter
Edge Triggered External Interrupt
Software Interrupt
The start condition detector is shown in
the range of 50 to 300 ns) to ensure valid sampling of the SCL line. The start condition detector
is only enabled in Two-wire mode.
The start condition detector is working asynchronously and can therefore wake up the processor
from the Power-down sleep mode. However, the protocol used might have restrictions on the
SCL hold time. Therefore, when using this feature in this case the Oscillator start-up time set by
the CKSEL Fuses (see
into the consideration. Refer to the USISIF bit description on page 196 for further details.
Maximum frequency for SCL and SCK is f
receieve rate in both two- and three-wire mode. In two-wire slave mode the Two-wire Clock Con-
trol Unit will hold the SCL low until the slave is ready to receive more data. This may reduce the
actual data rate in two-wire mode.
When the USI unit is not used for serial communication, it can be set up to do alternative tasks
due to its flexible design.
By utilizing the Shift Register in Three-wire mode, it is possible to implement a more compact
and higher performance UART than by software only.
The 4-bit counter can be used as a stand-alone counter with overflow interrupt. Note that if the
counter is clocked externally, both clock edges will generate an increment.
Combining the USI 4-bit counter and Timer/Counter0 allows them to be used as a 12-bit
counter.
By setting the counter to maximum value (F) it can function as an additional external interrupt.
The Overflow Flag and Interrupt Enable bit are then used for the external interrupt. This feature
is selected by the USICS1 bit.
The counter overflow interrupt can be used as a software interrupt triggered by a clock strobe.
“Clock Systems and their Distribution” on page
Figure 19-6 on page
CK
/4. This is also the maximum data transmit and
194. The SDA line is delayed (in
ATmega165P
26) must also be taken
195
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