ATMEGA128-16AUR Atmel, ATMEGA128-16AUR Datasheet - Page 169
ATMEGA128-16AUR
Manufacturer Part Number
ATMEGA128-16AUR
Description
MCU AVR 128KB FLASH 16MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA128-16AUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
128KB (64K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP, 64-VQFP
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32ATSTK501 - ADAPTER KIT FOR 64PIN AVR MCUATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Data Modes
2467V–AVR–02/11
There are four combinations of SCK phase and polarity with respect to serial data, which are
determined by control bits CPHA and CPOL. The SPI data transfer formats are shown in
77
ensuring sufficient time for data signals to stabilize. This is clearly seen by summarizing
70
Table 73. CPOL and CPHA Functionality
Figure 77. SPI Transfer Format with CPHA = 0
Figure 78. SPI Transfer Format with CPHA = 1
and
and
CPOL = 0, CPHA = 0
CPOL = 0, CPHA = 1
CPOL = 1, CPHA = 0
CPOL = 1, CPHA = 1
Table
SCK (CPOL = 0)
mode 1
SCK (CPOL = 1)
mode 3
SAMPLE I
MOSI/MISO
CHANGE 0
MOSI PIN
CHANGE 0
MISO PIN
Figure
SS
SCK (CPOL = 0)
mode 0
SCK (CPOL = 1)
mode 2
SAMPLE I
MOSI/MISO
CHANGE 0
MOSI PIN
CHANGE 0
MISO PIN
SS
MSB first (DORD = 0)
LSB first (DORD = 1)
MSB first (DORD = 0)
LSB first (DORD = 1)
71, as done below:
78. Data bits are shifted out and latched in on opposite edges of the SCK signal,
MSB
LSB
MSB
LSB
Sample (Falling)
Sample (Rising)
Leading edge
Setup (Rising)
Setup (Falling)
Bit 6
Bit 1
Bit 6
Bit 1
Bit 5
Bit 2
Bit 5
Bit 2
Bit 4
Bit 3
Sample (Falling)
Sample (Rising)
Bit 4
Bit 3
Setup (Falling)
Setup (Rising)
Trailing edge
Bit 3
Bit 4
Bit 3
Bit 4
Bit 2
Bit 5
Bit 2
Bit 5
Bit 1
Bit 6
ATmega128
SPI mode
Bit 1
Bit 6
0
1
2
3
LSB
MSB
LSB
MSB
Figure
Table
169
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