ST10F271E STMICROELECTRONICS [STMicroelectronics], ST10F271E Datasheet - Page 90

• Manufacturer Part Number: ST10F271E
• Description: 16-bit MCU with 128 Kbyte Flash memory and 8/12 Kbyte RAM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

System reset
90/180
Figure 22. Synchronous short / long hardware RESET (EA = 0)
5. Minimum RSTIN low pulse duration shall also be longer than 500ns to guarantee the pulse is not masked by the
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 2.5V for 5V 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.
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 > 2.5V Asynchronous Reset not entered
At this time RSTF is sampled HIGH or LOW
so it is SHORT or LONG reset
3..8 TCL3)
ST10F271B/ST10F271E
not t.
not t.
8 TCL