ST72321J7-Auto STMicroelectronics, ST72321J7-Auto Datasheet - Page 42
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ST72321J7-Auto
Manufacturer Part Number
ST72321J7-Auto
Description
8-bit MCU for automotive with 48 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
Manufacturer
STMicroelectronics
Datasheet
1.ST72321R9-AUTO.pdf
(243 pages)
Specifications of ST72321J7-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
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Supply, reset and clock management
6.5.5
Figure 13. RESET sequences
42/243
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
)
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