ATMEGA48PV-10MUR Atmel, ATMEGA48PV-10MUR Datasheet - Page 203
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ATMEGA48PV-10MUR
Manufacturer Part Number
ATMEGA48PV-10MUR
Description
MCU AVR 4K FLASH 10MHZ 32QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA168P-20AU.pdf
(420 pages)
Specifications of ATMEGA48PV-10MUR
Core Processor
AVR
Core Size
8-Bit
Speed
10MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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20.4
8025L–AVR–7/10
SPI Data Modes and Timing
Table 20-1.
Note:
There are four combinations of XCKn (SCK) phase and polarity with respect to serial data, which
are determined by control bits UCPHAn and UCPOLn. The data transfer timing diagrams are
shown in
signal, ensuring sufficient time for data signals to stabilize. The UCPOLn and UCPHAn function-
ality is summarized in
all ongoing communication for both the Receiver and Transmitter.
Table 20-2.
Operating Mode
Synchronous Master
mode
UCPOLn
BAUD
f
UBRRn
OSC
0
0
1
1
1. The baud rate is defined to be the transfer rate in bit per second (bps)
Figure
Equations for Calculating Baud Rate Register Setting
UCPOLn and UCPHAn Functionality-
20-1. Data bits are shifted out and latched in on opposite edges of the XCKn
UCPHAn
Table
Baud rate (in bits per second, bps)
System Oscillator clock frequency
Contents of the UBRRnH and UBRRnL Registers, (0-4095)
0
1
0
1
Equation for Calculating Baud
20-2. Note that changing the setting of any of these bits will corrupt
BAUD
SPI Mode
=
0
1
2
3
Rate
-------------------------------------- -
2 UBRRn
(
(1)
f
OSC
Leading Edge
Sample (Rising)
Setup (Rising)
Sample (Falling)
Setup (Falling)
+
1
)
ATmega48P/88P/168P
Equation for Calculating UBRRn
UBRRn
Trailing Edge
Setup (Falling)
Sample (Falling)
Setup (Rising)
Sample (Rising)
Value
=
------------------- - 1
2BAUD
f
OSC
–
203
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