ST10F296 datasheet(219/346 Pages) STMICROELECTRONICS

219 / 346 page

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ST10F296E

System reset

219/346

20.2.3

Exit from asynchronous reset state

When the RSTIN pin is pulled high, the device restarts. If the internal Flash is used,

restarting occurs after the embedded Flash initialization routine is completed. The system

configuration is latched from Port 0. ALE, RD and WR/WRL pins are driven to their inactive

level. The ST10F296E starts program execution from memory location 00'0000h in code

segment 0. This starting location typically points to the general initialization routine. Timing

of asynchronous hardware reset sequences are summarized in Figure 77 and Figure 78.

Figure 77.

Asynchronous hardware reset (EA = 1)

Longer than Port 0 settling time + PLL synchronization (if needed, that is P0(15:13) changed) Longer than 500 ns to take

account of input filter on RSTIN pin.

RSTF

P0[15:13]

P0[12:2]

Transparent

Not t.

P0[1:0]

Not t.

Not transparent

FLARST

≤2 TCL

RST

≤1 ms

Latching point of Port 0 for

system start-up configuration

RPD

IBUS-CS

(1)

Not transparent

(after filter)

RSTIN

≤500 ns

≥ 50 ns

≤500 ns

≥ 50 ns

7 TCL

(internal)

3..4 TCL

Not t.

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ST10F296 데이터시트(PDF) 219 Page - STMicroelectronics

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