ST72321AR6-Auto STMicroelectronics, ST72321AR6-Auto Datasheet - Page 42

• Manufacturer Part Number: ST72321AR6-Auto
• Description: 8-bit MCU for automotive with 32 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
• Manufacturer: STMicroelectronics

Specifications of ST72321AR6-Auto

• Hdflash Endurance: 100 cycles, data retention 20 years
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• 4 Power Saving Modes: Halt, Active Halt, Wait and Slow

Supply, reset and clock management
6.5.5
Figure 13. RESET sequences
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WATCHDOG
RESET
RESET PIN
EXTERNAL
RESET
SOURCE
V
V
IT+(LVD)
IT-(LVD)
Internal watchdog RESET
The RESET sequence generated by an internal Watchdog counter overflow is shown in
Figure
Starting from the Watchdog counter underflow, the device RESET pin acts as an output that
is pulled low during at least t
V
RUN
DD
13.
Active Phase
RESET
LVD
t
t
h(RSTL)in
w(RSTL)out
w(RSTL)out
RUN
Doc ID 13829 Rev 1
Phase
Active
SHORT EXT.
RESET
.
DELAY
t
h(RSTL)in
t
w(RSTL)out
RUN
WATCHDOG UNDERFLOW
Phase
Active
LONG EXT.
RESET
INTERNAL RESET (256 or 4096 T
VECTOR FETCH
RUN
ST72321xx-Auto
Active
Phase
WATCHDOG
RESET
t
w(RSTL)out
CPU
RUN
)