ST10F272M-4Q3 STMICROELECTRONICS [STMicroelectronics], ST10F272M-4Q3 Datasheet - Page 88

• Manufacturer Part Number: ST10F272M-4Q3
• Description: 16-bit MCU with 256 Kbyte Flash memory and 20 Kbyte RAM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

System reset
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Figure 23. 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
2. Minimum RSTIN low pulse duration shall also be longer than 500ns to guarantee the pulse is not masked
5V operation), the asynchronous reset is then immediately entered. Even if RPD returns above the
threshold,the reset is defnitively taken as asynchronous.
by theinternal filter (refer to
RSTIN
RSTOUT
RPD
RSTF
(After Filter)
P0[15:13]
P0[12:2]
P0[1:0]
FLARST
RST
IBUS-CS
(Internal)
≤ 500ns
≥ 50ns
≤4 TCL
200µA Discharge
(2)
Section
≤12 TCL
not t.
not transparent
≤ 500ns
≥ 50ns
21.1).
1024+8 TCL
1024+8 TCL
not transparent
transparent
At this time RSTF is sampled LOW
so it is definitely LONG reset
transparent
≤ 500ns
≥ 50ns
3..4 TCL
≤ 1ms
(1)
V
RPD
> 2.5V Asynchronous Reset not entered
≤ 2 TCL
not t.
not t.
not t.
7 TCL
ST10F272M