st10f273m STMicroelectronics, st10f273m Datasheet - Page 102

• 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 32. System reset circuit
Figure 33. Internal (simplified) reset circuitry
Internal
reset
signal
ST10F273
EINIT Instruction
RSTIN
RPD
Reset state
machine
V
V
+
clock
DD
DD
Clr
Trigger
R2
R0
C0
Asynchronous
Reset
Reset Sequence
(512 CPU clock cycles)
D1
External hardware
Set
Clr
From/to exit
power down
circuit
Open drain inverter
Q
SRST instruction
watchdog overflow
o.d.
BDRSTEN
External
reset source
D2
V
+
DD
V
V
R1
C1
DD
DD
Weak pull down
(~200µA)
RSTOUT
ST10F273M
RSTIN
RPD