參數(shù)資料
型號: ST10F269Z2Q3
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 16-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP144
封裝: 28 X 28 MM, PLASTIC, QFP-144
文件頁數(shù): 62/160頁
文件大?。?/td> 1541K
代理商: ST10F269Z2Q3
ST10F269
154/160
Figure 78 : CLKOUT and READY
Notes: 1. Cycle as programmed, including MCTC wait states (Example shows 0 MCTC WS).
2. The leading edge of the respective command depends on RW-delay.
3. READY sampled HIGH at this sampling point generates a READY controlled wait state, READY sampled LOW at this sampling
point terminates the currently running bus cycle.
4. READY may be deactivated in response to the trailing (rising) edge of the corresponding command (RD or WR).
5. If the Asynchronous READY signal does not fulfill the indicated setup and hold times with respect to CLKOUT (e.g. because
CLKOUT is not enabled), it must fulfill t37 in order to be safely synchronized. This is guaranteed, if READY is removed in response to
the command (see Note 4)).
6. Multiplexed bus modes have a MUX wait state added after a bus cycle, and an additional MTTC wait state may be inserted here.
For a multiplexed bus with MTTC wait state this delay is 2 CLKOUT cycles, for a demultiplexed bus without MTTC wait state this
delay is zero.
7. The next external bus cycle may start here.
t30
t34
t35
t36
t35
t36
t58
t59
t58
t59
wait state
READY
MUX / Tri-state 6)
t32
t33
t29
Running cycle 1)
t31
t37
3)
5)
t60 4)
6)
2)
7)
3)
CLKOUT
ALE
RD, WR
Synchronous
Asynchronous
READY
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