ST10F272Z2Q3 datasheet(85/189 Pages) STMICROELECTRONICS

Numer części	ST10F272Z2Q3

Szczegółowy opis	16-bit MCU with 256 Kbyte Flash memory and 20 Kbyte RAM

PDF	189 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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ST10F272Z2

System reset

85/189

Figure 18.

Asynchronous power-on RESET (EA = 0)

Hardware reset

The asynchronous reset must be used to recover from catastrophic situations of the

application. It may be triggered by the hardware of the application. Internal hardware logic

and application circuitry are described in Reset circuitry chapter and Figures 30, 31 and 32.

It occurs when RSTIN is low and RPD is detected (or becomes) low as well.

RSTIN

P0[15:13]

P0[12:2]

not t.

transparent

not t.

P0[1:0]

not t.

not transparent

V18

XTAL1

...

3..8 TCL1)

RST

Latching point of Port0 for

system start-up configuration

VDD

≥ 1 ms (for on-chip VREG stabilization)

RPD

ALE

≥ 1.2 ms (for resonator oscillation + PLL stabilization)

≥ 10.2 ms (for crystal oscillation + PLL stabilization)

Note 1. 3 to 8 TCL depending on clock source selection.

RSTF

≤ 500 ns

(After Filter)

≥ 50 ns

8 TCL

transparent

3..4 TCL

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