ST72321AR6-Auto STMicroelectronics, ST72321AR6-Auto Datasheet - Page 224

• 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

Device configuration and ordering information
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Table 141. Option byte 0 bit description
OPT4:3
OPT7
OPT6
OPT5
OPT2
OPT1
OPT0
Bit
WDG HALT
WDG SW
VD[1:0]
FMP_R
Name
PKG0
-
-
Watchdog and Halt mode
Hardware or software watchdog
Reserved, must be kept at default value.
Voltage detection
Caution: If the medium or low thresholds are selected, the detection
may occur outside the specified operating voltage range. Below 3.8V,
device operation is not guaranteed. For details on the AVD and LVD
threshold levels refer to
voltage detector
Reserved, must be kept at default value.
Package selection bit 0
Flash memory readout protection
Note: Readout protection is not supported if LVD is enabled.
This option bit determines if a RESET is generated when entering
Halt mode while the Watchdog is active.
0: No Reset generation when entering Halt mode
1: Reset generation when entering Halt mode
This option bit selects the watchdog type.
0: Hardware (watchdog always enabled)
1: Software (watchdog to be enabled by software)
These option bits enable the voltage detection block (LVD and AVD)
with a selected threshold for the LVD and AVD (EVD + AVD).
00: Selected LVD = Highest threshold (V
01: Selected LVD = Medium threshold (V
10: Selected LVD = Lowest threshold (V
11: LVD and AVD off
This option bit is used with the PKG1 bit to select the package (see
Table 143: Package selection
Readout protection, when selected, provides a protection against
program memory content extraction and against write access to Flash
memory.
Erasing the option bytes when the FMP_R option is selected causes
the whole user memory to be erased first, after which the device can
be reprogrammed. Refer to
page 30
details.
0: Readout protection enabled
1: Readout protection disabled
Doc ID 13829 Rev 1
and the ST7 Flash Programming Reference Manual for more
(LVD).
Table 19.3.2: Operating conditions with low
Section 4.3.1: Readout protection on
Function
(OPT7)).
DD
DD
DD
~3V)
~4V)
~3.5V)
ST72321xx-Auto