AT90PWM1-16MU Atmel, AT90PWM1-16MU Datasheet - Page 166

• Manufacturer Part Number: AT90PWM1-16MU
• Description: IC AVR PWM 8KB FLASH 16MHZ 32QFN
• Manufacturer: Atmel
• Series: AVR® 90PWM Lightingr

Specifications of AT90PWM1-16MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: SPI
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 19
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 32-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

17. Serial Peripheral Interface – SPI
17.1
166
Features
AT90PWM1
The Serial Peripheral Interface (SPI) allows high-speed synchronous data transfer between the
AT90PWM1 and peripheral devices or between several AVR devices.
The AT90PWM1 SPI includes the following features:
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Figure 17-1. SPI Block Diagram
Note:
The interconnection between Master and Slave CPUs with SPI is shown in
tem consists of two shift Registers, and a Master clock generator. The SPI Master initiates the
communication cycle when pulling low the Slave Select SS pin of the desired Slave. Master and
Slave prepare the data to be sent in their respective shift Registers, and the Master generates
Full-duplex, Three-wire Synchronous Data Transfer
Master or Slave Operation
LSB First or MSB First Data Transfer
Seven Programmable Bit Rates
End of Transmission Interrupt Flag
Write Collision Flag Protection
Wake-up from Idle Mode
Double Speed (CK/2) Master SPI Mode
1. Refer to
/2/4/8/16/32/64/128
DIVIDER
clk
Figure 3-1 on page
IO
(1)
2, and
Table 9 on page 65
for SPI pin placement.
Figure
17-2. The sys-
4378C–AVR–09/08
SPIPS
SS_A
MISO
MISO
_A
MOSI
MOSI
_A
SCK
_A
SCK
SS