ST92150CV1Q-Auto STMicroelectronics, ST92150CV1Q-Auto Datasheet - Page 409

• Manufacturer Part Number: ST92150CV1Q-Auto
• Description: 8-bit MCU for automotive
• Manufacturer: STMicroelectronics

Specifications of ST92150CV1Q-Auto

• Internal Memory: Single Voltage FLASH up to 256 Kbytes, RAM up to 8Kbytes, 1K byte E3 TM (Emulated EEPROM)
• Minimum Instruction Time: 83 ns (24 MHz int. clock)

13 KNOWN LIMITATIONS
Limitations described in this section apply to all sil-
icon revisions. They are listed in the following ta-
ble.
Additional limitations exist on specific silicon revi-
sions identified by the following trace codes:
– ST92F124 Gxxxxxxxx1
– ST92F150 AxxxxxxxxZ
– ST92F150 AxxxxxxxxY
– ST92F250 AxxxxxxxxA
Table 75. List of limitations
13.1 FLASH ERASE SUSPEND LIMITATIONS
13.1.1 Description
In normal operation, the FSUSP bit (bit 2 in the
FCR register) must be set to suspend the current
Sector Erase operation in Flash memory in order
to access a sector not being erased. The Flash
sector erase operation is done in 3 different steps:
1. Program all addresses to 0 on selected sectors
2. Erase and erase verify
3. Reprogramming
If the erase suspend is performed during Steps 1
and 2, the flash works correctly. If the erase sus-
pend is performed during Step 3, the PGER bit (bit
Section 13.1
Section 13.2
Section 13.3
Section 13.4
Section 13.5
Section 13.6
Section 13.7
Section 13.8
or 1 ST92F124 xxxxx VG
or Y ST92F150 xxxxx VA
or A ST92F250 xxxxx VA
Section
“FLASH ERASE SUSPEND LIMITATIONS
“FLASH CORRUPTION WHEN EXITING STOP MODE
“I2C LIMITATIONS
“SCI-A AND CAN INTERRUPTS
“SCI-A MUTE MODE
“CAN FIFO CORRUPTION WHEN 2 FIFO MESSAGES ARE PENDING
“MFT DMA MASK BIT RESET WHEN MFT0 DMA PRIORITY LEVEL IS SET TO 0
“EMULATION CHIP LIMITATIONS
ST92124xxx-Auto/150xxxxx-Auto/250xxxx-Auto
Please contact your nearest sales office for further
information.
6 in the FESR1 register) is set although no pro-
gram error occurred.
13.1.2 Workaround
After a Sector Erase suspend operation, the soft-
ware must check the status register to detect if an
erase error occurred (the corresponding sector
must be discarded). Then the software must reset
the FEERR bit. This automatically resets the flash
status register.
Whatever the state of the PGER bit at the end of
the erase operation, it will not impact the applica-
tion and an erase error is still detected.
Limitation
409/430
1