ST72325R6-AUTO STMicroelectronics, ST72325R6-AUTO Datasheet - Page 234

• Manufacturer Part Number: ST72325R6-AUTO
• Description: 8-bit Mcu For Automotive With 16 To 60 Kbyte Flash, Adc, Css, 5 Timers, Spi, Sci, I2c Interface
• Manufacturer: STMicroelectronics

Device configuration and ordering information
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Table 145. Option byte 0 bit description (continued)
Table 146. Option byte 1 bit description
OPT4:3
OPT2:1
OPT5:4
OPT5
OPT0
OPT7
OPT6
Bit
Bit
OSCTYPE[1:0]
VD[1:0]
FMP_R
Name
RSTC
Name
PKG1
CSS
-
Package selection bit 1
RESET clock cycle selection
Oscillator type
Clock security system on/off
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 (LVD) on page
Reserved, must be kept at default value
Flash memory readout protection
This option bit selects the package (see
(OPT7)).
This option bit selects the number of CPU cycles applied during the
RESET phase and when exiting Halt mode. For resonator oscillators,
it is advised to select 4096 due to the long crystal stabilization time.
0: Reset phase with 4096 CPU cycles
1: Reset phase with 256 CPU cycles
These option bits select the ST7 main clock source type.
00: Clock source = Resonator oscillator
01: Reserved
10: Clock source = Internal RC oscillator
11: Clock source = External source
This option bit enables or disables the clock security system (CSS)
function which includes the clock filter and the backup safe oscillator.
0: CSS enabled
1: CSS disabled
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
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 40
details.
0: Readout protection enabled
1: Readout protection disabled
and the ST7 Flash Programming Reference Manual for more
Section 19.3.2: Operating conditions with low
Section 4.3.1: Readout protection on
Function
Function
198.
Table 147: Package selection
DD
DD
DD
~3V)
~4V)
~3.5V)
ST72325xxx-Auto