ST10F272M-4T3 STMicroelectronics, ST10F272M-4T3 Datasheet - Page 35

• Manufacturer Part Number: ST10F272M-4T3
• Description: MCU 16BIT 256K FLASH 144-LQFP
• Manufacturer: STMicroelectronics
• Series: ST10r

Specifications of ST10F272M-4T3

• Core Processor: ST10
• Core Size: 16-Bit
• Speed: 40MHz
• Connectivity: ASC, CAN, EBI/EMI, I²C, SSC, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 111
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 20K x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Data Converters: A/D 24x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 144-MQFP, 144-PQFP
• Processor Series: ST10F27x
• Core: ST10
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

ST10F272M
5.5
5.5.1
Table 18.
Protection strategy
The protection bits are stored in non-volatile Flash cells inside IFlash module, that are read
once at reset and stored in four volatile registers. Before they are read from the non-volatile
cells, all the available protections are forced active during reset.
The protections can be programmed using the set protection operation (see Flash control
registers paragraph), that can be executed from all the internal or external memories except
from the Flash itself.
Two kind of protections are available: write protections to avoid unwanted writings and
access protections to avoid piracy. In next paragraphs all different level of protections are
shown, and architecture limitations are highlighted as well.
Protection registers
The four non-volatile protection registers are one time programmable for the user.
One register (FNVWPIR) is used to store the write protection fuses respectively for each
sector IFlash module. The other three registers (FNVAPR0 and FNVAPR1L/H) are used to
store the access protection fuses.
Bit
6
7
8
SEQER
RESER
Name
WPF
Flash error register (continued)
Sequence error
This bit is automatically set when the control registers (FCR1H/L-FCR0H/L,
FARH/L, FDR1H/L-FDR0H/L) are not correctly filled to execute a valid Write
Operation. In this case no write operation is executed. This bit has to be software
reset.
Resume error
This bit is automatically set when a suspended program or erase operation is not
resumed correctly due to a protocol error. In this case the suspended operation is
aborted. This bit has to be software reset.
Write protection flag
This bit is automatically set when trying to program or erase in a sector write
protected. In case of multiple sector erase, the not protected sectors are erased,
while the protected sectors are not erased and bit WPF is set. This bit has to be
software reset.
Function
Internal Flash memory
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