參數(shù)資料
型號: AT43USB320A-AC
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: Full-speed USB Microcontroller with an Embedded Hub
中文描述: 8-BIT, 12 MHz, RISC MICROCONTROLLER, PQFP100
封裝: 14 X 14 MM, 1.40 MM HEIGHT, 0.50 MM PITCH, MS-026AED, LQFP-100
文件頁數(shù): 52/115頁
文件大?。?/td> 722K
代理商: AT43USB320A-AC
52
AT43USB320A
1443E–USB–4/04
Serial Peripheral
Interface (SPI)
The Serial Peripheral Interface (SPI) allows high-speed synchronous data transfer between
the AT43USB320A and peripheral devices or between several AVR devices. The
AT43USB320A SPI features include the following:
Full-duplex, 3-wire Synchronous Data Transfer
Master or Slave Operation
LSB First or MSB First Data Transfer
Four Programmable Bit Rates
End of Transmission Interrupt Flag
Write Collision Flag Protection
Wakeup from Idle Mode (Slave Mode Only)
Figure 15.
SPI Block Diagram
SELECT
SPI Clock (Master)
Clock
Logic
Clock
SPI Control
SPI Status Register
8
8
SPI Control Register
S
M
M
S
MISO
PB6
MOSI
PB5
SCK
PB7
SS
PB4
P
8-bit Shift Register
Read Data Buffer
Divider
4 16 64 128
MSTR
SPE
MSB
LSB
SYSCLK
S
S
S
W
S
S
D
M
C
C
S
S
8
M
S
D
S
M
SPI Interrupt
Request
Internal
Data Bus
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