st10f273m STMicroelectronics, st10f273m Datasheet - Page 92

• Manufacturer Part Number: st10f273m
• Description: 16-bit Mcu With 512 Kbyte Flash Memory And 36 Kbyte Ram
• Manufacturer: STMicroelectronics

System reset
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Figure 23. Synchronous short / long hardware RESET (EA = 0)
1. RSTIN assertion can be released there. Refer also to
2. If during the reset condition (RSTIN low), RPD voltage drops below the threshold voltage (about 2.5V for
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. Bit
5. Minimum RSTIN low pulse duration shall also be longer than 500ns to guarantee the pulse is not masked
RSTIN
RSTF
(After Filter)
P0[15:13]
P0[12:2]
P0[1:0]
ALE
RST
RSTOUT
RPD
5V operation), the asynchronous reset is then immediately entered.
BDRSTEN is cleared after reset.
by the internal filter (refer to
≤ 500 ns
≥ 50 ns
≤4 TCL
200µA Discharge
1)
≤12 TCL
not t.
Section
≤ 500 ns
≥ 50 ns
21.1).
4)
< 1032 TCL
1024 TCL
not transparent
not transparent
transparent
Section 21.1
≤ 500 ns
≥ 50 ns
8 TCL
2) VRPD > 2.5V Asynchronous Reset not entered
At this time RSTF is sampled HIGH or LOW
so it is SHORT or LONG reset
3..8 TCL3)
for details on minimum pulse duration.
not t.
not t.
8 TCL
ST10F273M