ST10F272Z2_08 datasheet(92/189 Pages) STMICROELECTRONICS | 16-bit MCU with 256 Kbyte Flash memory and 20 Kbyte RAM

Part #	ST10F272Z2

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

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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System reset

ST10F272Z2

92/189

Figure 23.

Synchronous long hardware RESET (EA = 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 > 2.5 V Asynchronous Reset not entered

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

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

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

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).

Notes:

not t.

transparent

not t.

3..4 TCL

(Internal)

the reset is defnitively taken as asynchronous.

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ST10F272Z2 Datasheet(PDF) 92 Page - STMicroelectronics

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