ST10F273 datasheet(90/179 Pages) STMICROELECTRONICS

Part #	ST10F273

Description	16-bit MCU with 512 Kbyte Flash memory and 36 Kbyte RAM

PDF	179 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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90 / 179 page

System reset

ST10F273

90/179

Figure 21.

Synchronous long hardware RESET (EA = 1)

1) If during the reset condition (RSTIN low), RPD voltage drops below the threshold voltage (about 2.5V for 5V

operation), the asynchronous reset is then immediately entered. Even if RPD returns above the threshold,

the reset is defnitively taken as asynchronous.

2) Minimum RSTIN low pulse duration shall also be longer than 500ns to guarantee the pulse is not masked by

the internal filter (refer to Section 21.1).

P0[15:13]

not transparent

RSTF

P0[12:2]

transparent

not t.

P0[1:0]

not t.

not transparent

FLARST

RST

≤ 1 ms

1024+8 TCL

≤ 2 TCL

1) V

RPD > 2.5V Asynchronous reset

200

µA Discharge

RPD

RSTOUT

At this time RSTF is sampled LOW

so it is definitely LONG reset

(After Filter)

RSTIN

1024+8 TCL

≤4 TCL2)≤12 TCL

≤ 500 ns

≥ 50 ns

≤ 500 ns

≥ 50 ns

≤ 500 ns

≥ 50 ns

IBUS-CS

7 TCL

not t.

transparent

not t.

3..4 TCL

(Internal)

not entered

ST10F273 Datasheet(PDF) 90 Page - STMicroelectronics

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