ATMEGA165P-16ANR Atmel, ATMEGA165P-16ANR Datasheet - Page 153
![IC MCU AVR 16K 16MHZ 64TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA165P-16ANR
Manufacturer Part Number
ATMEGA165P-16ANR
Description
IC MCU AVR 16K 16MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA165P-16ANR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 153 of 364
- Download datasheet (8Mb)
17.3
17.3.1
17.3.2
8019K–AVR–11/10
SS Pin Functionality
Slave Mode
Master Mode
When the SPI is configured as a Slave, the Slave Select (SS) pin is always input. When SS is
held low, the SPI is activated, and MISO becomes an output if configured so by the user. All
other pins are inputs. When SS is driven high, all pins are inputs, and the SPI is passive, which
means that it will not receive incoming data. Note that the SPI logic will be reset once the SS pin
is driven high.
The SS pin is useful for packet/byte synchronization to keep the slave bit counter synchronous
with the master clock generator. When the SS pin is driven high, the SPI slave will immediately
reset the send and receive logic, and drop any partially received data in the Shift Register.
When the SPI is configured as a Master (MSTR in SPCR is set), the user can determine the
direction of the SS pin.
If SS is configured as an output, the pin is a general output pin which does not affect the SPI
system. Typically, the pin will be driving the SS pin of the SPI Slave.
If SS is configured as an input, it must be held high to ensure Master SPI operation. If the SS pin
is driven low by peripheral circuitry when the SPI is configured as a Master with the SS pin
defined as an input, the SPI system interprets this as another master selecting the SPI as a
slave and starting to send data to it. To avoid bus contention, the SPI system takes the following
actions:
1. The MSTR bit in SPCR is cleared and the SPI system becomes a Slave. As a result of
2. The SPIF Flag in SPSR is set, and if the SPI interrupt is enabled, and the I-bit in SREG is
Thus, when interrupt-driven SPI transmission is used in Master mode, and there exists a possi-
bility that SS is driven low, the interrupt should always check that the MSTR bit is still set. If the
MSTR bit has been cleared by a slave select, it must be set by the user to re-enable SPI Master
mode.
the SPI becoming a Slave, the MOSI and SCK pins become inputs.
set, the interrupt routine will be executed.
ATmega165P
153
Related parts for ATMEGA165P-16ANR
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![ATmega165P](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Manufacturer:
Atmel Corporation
Datasheet:
![ATMEGA165P-16AU](/photos/12/13/121332/313-64-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 16K 16MHZ 64-TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA165P-16MU](/photos/12/13/121326/313-64-qfn_tmb.jpg)
Part Number:
Description:
IC AVR MCU 16K 16MHZ 64-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA165P-16AUR](/photos/12/13/121332/313-64-tqfp_tmb.jpg)
Part Number:
Description:
MCU AVR 128K FLASH 16MHZ 64TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA165P-16MN](/photos/12/13/121326/313-64-qfn_tmb.jpg)
Part Number:
Description:
MCU AVR 16KB FLASH 16MHZ 64QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA165P-16MUR](/photos/12/13/121326/313-64-qfn_tmb.jpg)
Part Number:
Description:
IC MCU AVR 16K 16MHZ 64MLF
Manufacturer:
Atmel
Datasheet:
![ATMEGA165P-16MNR](/photos/12/13/121326/313-64-qfn_tmb.jpg)
Part Number:
Description:
IC MCU AVR 16K 16MHZ 64MLF
Manufacturer:
Atmel
Datasheet:
![ATMEGA165P-16AN](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
8-bit Microcontrollers - MCU AVR 16KB FL 512B EE 1KB SRAM 16 MHZ GRN
Manufacturer:
Atmel
![atmega165pv](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Atmega165p 8-bit Avr Microcontroller With 16k Bytes In-system Programmable Flash
Manufacturer:
ATMEL Corporation
Datasheet:
![ATMEGA165-16AI](/photos/12/13/121332/313-64-tqfp_tmb.jpg)
Part Number:
Description:
IC AVR MCU 16K 16MHZ 64TQFP
Manufacturer:
Atmel
Datasheet:
![ATMEGA165-16MI](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
IC AVR MCU 16K 16MHZ 64-QFN
Manufacturer:
Atmel
Datasheet:
![ATMEGA165](/images/no-image3.png)
Part Number:
Description:
8-bit Microcontroller with 16K Bytes In-System Programmable Flash
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
![ATMEGA165-16MU](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
IC AVR MCU 16K 16MHZ 64-QFN
Manufacturer:
Atmel
Datasheet:
![atmega165v](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Atmega165 8-bit With 16k Bytes Of In-system Programmable Flash
Manufacturer:
ATMEL Corporation
Datasheet: