F272-BAG-T-TR STMicroelectronics, F272-BAG-T-TR Datasheet - Page 38
F272-BAG-T-TR
Manufacturer Part Number
F272-BAG-T-TR
Description
MCU 16BIT 256K FLASH 144-TQFP
Manufacturer
STMicroelectronics
Series
ST10r
Datasheet
1.F272-BAGE-T-TR.pdf
(182 pages)
Specifications of F272-BAG-T-TR
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-TQFP, 144-VQFP
Processor Series
ST10F27x
Core
ST10
Data Bus Width
16 bit
Data Ram Size
12 KB
Interface Type
ASC, CAN, I2C, SSC
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
111
Number Of Timers
4
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 24 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
No
Available stocks
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Part Number
Manufacturer
Quantity
Price
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Part Number:
F272-BAG-T-TR
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Internal Flash memory
5.5
5.5.1
5.5.2
38/182
Protection strategy
The protection bits are stored in Non Volatile Flash cells inside IFLASH module, that are
read once at reset and stored in 4 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 4 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.
Flash non volatile write protection I register
FNVWPIR (0x08 DFB0)
Table 19.
W0P(9:0)
15
Bit
14
13
Flash non volatile write protection I register
Write Protection Bank 0 / Sectors 9-0 (IFLASH)
These bits, if programmed at 0, disable any write access to the sectors of Bank 0
(IFLASH)
12
reserved
11
10
9
NVR
8
W0P7W0P6W0P5W0P4W0P3W0P2W0P1W0P0
RW
7
Function
RW
6
RW
5
RW
4
ST10F272B/ST10F272E
RW
3
Reset value: FFFFh
RW
2
RW
1
RW
0
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