ST10F272M-4QR3 STMicroelectronics, ST10F272M-4QR3 Datasheet - Page 42

• Manufacturer Part Number: ST10F272M-4QR3
• Description: MCU 16BIT 256K FLASH 144-PQFP
• Manufacturer: STMicroelectronics
• Series: ST10r

Specifications of ST10F272M-4QR3

• 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

Internal Flash memory
5.7
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Write operation summary
In general, each write operation is started through a sequence of three steps:
1.
2.
3.
Once selected, but not yet started, one operation can be canceled by resetting the operation
selection bit.
Available Flash module write operations are summarized in the following
Table 25.
Figure 6
Figure 6.
1. The following bits must be checked:
Word program (32-bit)
Double word program (64-bit)
Sector erase
Set protection
Program/erase suspend
- Corresponding BSYx bit in FCR0L register
- WMS bit in FCR0H register
- Related command bit in FCR0H register"
The first instruction is used to select the desired operation by setting its corresponding
selection bit in the Flash control register 0.
The second step is the definition of the address and data for programming or the
sectors or banks to erase.
The last instruction is used to start the write operation, by setting the start bit WMS in
the FCR0.
shows the complete flow needed for a write operation.
Operation
Flash write operations
Write operation control flow
No error:
Proceed with application
Select bit
DWPG
SUSP
WPG
SER
SPR
Write operation finished?
(Check related bits
Check error status
Start write operation
FCR0L.LOCK == 0?
Yes
Yes
(1)
)
Address and data
FDR0L/FDR0H
FDR0L/FDR0H
FDR1L/FDR1H
FCR1L/FCR1H
FDR0L/FDR0H
Error:
Error handler, ...
Restart operation
FARL/FARH
FARL/FARH
None
No
No
Table
25.
ST10F272M
Start bit
WMS
WMS
WMS
WMS
None