ATMEGA163-8AC Atmel, ATMEGA163-8AC Datasheet - Page 69
ATMEGA163-8AC
Manufacturer Part Number
ATMEGA163-8AC
Description
IC AVR MCU 16K A/D 8MHZ 44TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA163-8AC.pdf
(187 pages)
Specifications of ATMEGA163-8AC
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
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)
4 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
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Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA163-8AC
Manufacturer:
ATMEL
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The SPI Data Register – SPDR
1142E–AVR–02/03
• Bit 6 – WCOL : Write COLlision Flag
The WCOL bit is set if the SPI Data Register (SPDR) is written during a data transfer.
The WCOL bit (and the SPIF bit) are cleared (zero) by first reading the SPI Status Reg-
ister with WCOL set (one), and then accessing the SPI Data Register.
• Bit 5..1 – Res: Reserved Bits
These bits are reserved bits in the ATmega163 and will always read as zero.
• Bit 0 – SPI2X: Double SPI Speed Bit
When this bit is set (one) the SPI speed (SCK Frequency) will be doubled when the SPI
is in Master mode (see Table 26). This means that the minimum SCK period will be two
CPU clock periods. When the SPI is configured as Slave, the SPI is only guaranteed to
work at f
The SPI interface on the ATmega163 is also used for Program memory and EEPROM
downloading or uploading. See page 155 for Serial Programming and verification.
The SPI Data Register is a read/write register used for data transfer between the Regis-
ter File and the SPI Shift Register. Writing to the register initiates data transmission.
Reading the register causes the Shift Register Receive buffer to be read.
Bit
$0F ($2F)
Read/Write
Initial Value
ck
/4 or lower.
MSB
R/W
X
7
R/W
X
6
R/W
5
X
R/W
4
X
R/W
X
3
R/W
X
2
ATmega163(L)
R/W
X
1
LSB
R/W
0
X
Undefined
SPDR
69
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