參數資料
型號: SAF-XC2264-72F66L
廠商: INFINEON TECHNOLOGIES AG
元件分類: 微控制器/微處理器
英文描述: 32-BIT, FLASH, 66 MHz, MICROCONTROLLER, PQFP100
封裝: 0.50 MM PITCH, GREEN, PLASTIC, LQFP-100
文件頁數: 9/116頁
文件大?。?/td> 1516K
代理商: SAF-XC2264-72F66L
XC2267 / XC2264
XC2000 Family Derivatives
Electrical Parameters
Data Sheet
104
V2.1, 2008-08
Bus Cycle Control with the READY Input
The duration of an external bus cycle can be controlled by the external circuit using the
READY input signal. The polarity of this input signal can be selected.
Synchronous READY permits the shortest possible bus cycle but requires the input
signal to be synchronous to the reference signal CLKOUT.
An asynchronous READY signal puts no timing constraints on the input signal but incurs
a minimum of one waitstate due to the additional synchronization stage. The minimum
duration of an asynchronous READY signal for safe synchronization is one CLKOUT
period plus the input setup time.
An active READY signal can be deactivated in response to the trailing (rising) edge of
the corresponding command (RD or WR).
If the next bus cycle is controlled by READY, an active READY signal must be disabled
before the first valid sample point in the next bus cycle. This sample point depends on
the programmed phases of the next cycle.
相關PDF資料
PDF描述
SAK-XC2264-56F66L 32-BIT, FLASH, 66 MHz, MICROCONTROLLER, PQFP100
SAF-XC2387-72F66L 32-BIT, FLASH, 66 MHz, RISC MICROCONTROLLER, PQFP144
SAF-XC2735X-72F80L RISC MICROCONTROLLER, PQFP64
SAF-XC2785X-104F80L 32-BIT, FLASH, 80 MHz, RISC MICROCONTROLLER, PQFP144
SAK-XC2785X-72F80L 32-BIT, FLASH, 80 MHz, RISC MICROCONTROLLER, PQFP144
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