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ST10F273Z4 Datasheet(PDF) 30 Page - STMicroelectronics

Part # ST10F273Z4
Description  16-bit MCU with 512 Kbyte Flash memory and 36 Kbyte RAM
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST10F273Z4 Datasheet(HTML) 30 Page - STMicroelectronics

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ST10F273Z4
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5.4.2
Flash control register 0 high
The Flash Control Register 0 High (FCR0H) together with the Flash Control Register 0 Low
(FCR0L) is used to enable and to monitor all the write operations on the IFlash. The user
has no access in write mode to the Test-Flash (B0TF). Besides, Test-Flash block is seen by
the user in Bootstrap mode only.
FCR0H (0x0E 0002)
FCR
Reset Value: 0000h
15
14
13
12
11
10
9
8
7
6
5432
10
WMS
SUSP
WPG
DWPG
SER
reserved
SPR
SMOD
reserved
RW
RW
RW
RW
RW
RW
RW
Table 9.
Flash control register 0 high
Bit
Function
SMOD
This must be set before every Write Operation except for writing in the Flash Non Volatile
Protection Registers, SMOD is automatically reset at the end of the Write Operation.
SPR
Set protection
This bit must be set to select the Set Protection operation. The Set Protection operation allows to
program 0s in place of 1s in the Flash Non Volatile Protection Registers. The Flash Address in
which to program must be written in the FARH/L registers, while the Flash Data to be programmed
must be written in the FDR0H/L before starting the execution by setting bit WMS. A sequence error
is flagged by bit SEQER of FER if the address written in FARH/L is not in the range 0x0EDFB0-
0x0EDFBF. SPR bit is automatically reset at the end of the Set Protection operation.
SER
Sector erase
This bit must be set to select the Sector Erase operation in the Flash modules. The Sector Erase
operation allows to erase all the Flash locations to value 0xFF. From 1 to all the sectors of the
same bank (excluded Test-Flash for Bank B0) can be selected to be erased through bits BxFy of
FCR1H/L registers before starting the execution by setting bit WMS. It is not necessary to pre-
program the sectors to 0x00, because this is done automatically. SER bit is automatically reset at
the end of the Sector Erase operation.
DWPG
Double word program
This bit must be set to select the Double Word (64 bits) Program operation in the Flash module.
The Double Word Program operation allows to program 0s in place of 1s. The Flash Address in
which to program (aligned with even words) must be written in the FARH/L registers, while the 2
Flash Data to be programmed must be written in the FDR0H/L registers (even word) and FDR1H/L
registers (odd word) before starting the execution by setting bit WMS. DWPG bit is automatically
reset at the end of the Double Word Program operation.
WPG
Word program
This bit must be set to select the Word (32 bits) Program operation in the Flash module. The Word
Program operation allows to program 0s in place of 1s. The Flash Address to be programmed must
be written in the FARH/L registers, while the Flash Data to be programmed must be written in the
FDR0H/L registers before starting the execution by setting bit WMS. WPG bit is automatically reset
at the end of the Word Program operation.


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