ST10F276-6Q3 STMicroelectronics, ST10F276-6Q3 Datasheet - Page 40
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ST10F276-6Q3
Manufacturer Part Number
ST10F276-6Q3
Description
MCU 16BIT 832K FLASH 144-PQFP
Manufacturer
STMicroelectronics
Series
ST10r
Datasheet
1.ST10F276-4TR3.pdf
(231 pages)
Specifications of ST10F276-6Q3
Core Processor
ST10
Core Size
16-Bit
Speed
64MHz
Connectivity
ASC, CAN, EBI/EMI, I²C, SSC, UART/USART
Peripherals
POR, PWM, WDT
Number Of I /o
111
Program Memory Size
832KB (832K x 8)
Program Memory Type
FLASH
Ram Size
68K 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
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Internal Flash memory
4.4.8
4.4.9
40/231
Flash non-volatile access protection register 1 high
FNVAPR1H (0x0E DFBE)
Table 25.
Access protection
The Flash modules have one level of access protection (access to data both in Reading and
Writing): if bit ACCP of FNVAPR0 is programmed at 0, the IFlash module become access
protected: data in the IFlash module can be read/written only if the current execution is from
the IFlash module itself.
Protection can be permanently disabled by programming bit PDS0 of FNVAPR1H, in order
to analyze rejects. Allowing PDS0 bit programming only when ACCP bit is programmed,
guarantees that only an execution from the Flash itself can disable the protections.
Protection can be permanently enabled again by programming bit PEN0 of FNVAPR1L. The
action to disable and enable again Access Protections in a permanent way can be executed
a maximum of 16 times.
Trying to write into the access protected Flash from internal RAM will be unsuccessful.
Trying to read into the access protected Flash from internal RAM will output a dummy data.
When the Flash module is protected in access, also the data access through PEC of a
peripheral is forbidden. To read/write data in PEC mode from/to a protected bank, first it is
necessary to temporary unprotect the Flash module.
Due to ST10 architecture, the XFLASH is seen as external memory: this makes impossible
to access protect it from real external memory or internal RAM.
levels of possible Access protection: in particular, supposing to enable all possible access
protections, when fetching from a memory as listed in the first column, what is possible and
what is not possible to do (see column headers) is shown in the table.
Table 26.
PEN15 PEN14 PEN13 PEN12 PEN11 PEN10 PEN9 PEN8 PEN7 PEN6 PEN5 PEN4 PEN3 PEN2 PEN1 PEN0
Fetching from IFLASH
Fetching from XFLASH
Fetching from IRAM
RW
15
PEN15-0
Memory fetch source
Bit
RW
14
RW
Flash non-volatile access protection register 1 high
Summary of access protection level
13
Protections Enable 15-0
If bit PENx is programmed at 0 and bit PDSx+1 is erased at 1, the action of bit ACCP
is enabled again. Bit PENx can be programmed at 0 only if bit PDSx has already been
programmed at 0.
RW
12
RW
11
Read IFLASH/
RW
Yes / Yes
Jump to
10
IFLASH
No / Yes
No / Yes
RW
9
NVR
RW
8
Read XFLASH/
XFLASH
Yes / Yes
Yes / Yes
Yes / Yes
Jump to
RW
7
Function
RW
6
RW
5
Read FLASH
Registers
Table 26
RW
4
Yes
Yes
Yes
RW
3
Delivery value: FFFFh
summarizes all
RW
2
Write FLASH
Registers
ST10F276E
RW
Yes
No
No
1
RW
0
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