st10f272z2 STMicroelectronics, st10f272z2 Datasheet - Page 91
st10f272z2
Manufacturer Part Number
st10f272z2
Description
16-bit Mcu With 256 Kbyte Flash Memory And 20 Kbyte Ram
Manufacturer
STMicroelectronics
Datasheet
1.ST10F272Z2.pdf
(189 pages)
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ST10F272Z2
Figure 22. Synchronous short / long hardware RESET (EA = 0)
RSTIN
RSTF
(After Filter)
P0[15:13]
P0[12:2]
P0[1:0]
ALE
RST
RSTOUT
RPD
Notes:
1. RSTIN assertion can be released there. Refer also to Section 21.1 for details on minimum pulse duration.
2. If during the reset condition (RSTIN low), RPD voltage drops below the threshold voltage (about 2.5 V for 5 V operation
3. 3 to 8 TCL depending on clock source selection.
4. RSTIN pin is pulled low if bit BDRSTEN (bit 3 of SYSCON register) was previously set by software.
5. Minimum RSTIN low pulse duration shall also be longer than 500ns to guarantee the pulse is not masked by the
the asynchronous reset is then immediately entered.
Bit BDRSTEN is cleared after reset.
internal filter (refer to Section 21.1).
≤ 500 ns
≥ 50 ns
≤4 TCL5)
200mA Discharge
1)
≤12 TCL
not t.
≤ 500 ns
≥ 50 ns
4)
< 1032 TCL
1024 TCL
not transparent
not transparent
transparent
≤ 500 ns
≥ 50 ns
8 TCL
2) VRPD > 2.5 V Asynchronous Reset not entered
At this time RSTF is sampled HIGH or LOW
so it is SHORT or LONG reset
3..8 TCL3)
not t.
not t.
8 TCL
System reset
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