ST72F324BJ STMICROELECTRONICS [STMicroelectronics], ST72F324BJ Datasheet - Page 21

• Manufacturer Part Number: ST72F324BJ
• Description: 8-bit MCU, 3.8 to 5.5 V operating range with 8 to 32 Kbyte Flash/ROM, 10-bit ADC, 4 timers, SPI, SCI
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

ST72324B
4.5
4.6
4.7
4.7.1
ICP (in-circuit programming)
To perform ICP the microcontroller must be switched to ICC (in-circuit communication) mode
by an external controller or programming tool.
Depending on the ICP code downloaded in RAM, Flash memory programming can be fully
customized (number of bytes to program, program locations, or selection serial
communication interface for downloading).
When using an STMicroelectronics or third-party programming tool that supports ICP and
the specific microcontroller device, the user needs only to implement the ICP hardware
interface on the application board (see
to the device pinout description.
IAP (in-application programming)
This mode uses a BootLoader program previously stored in Sector 0 by the user (in ICP
mode or by plugging the device in a programming tool).
This mode is fully controlled by user software. This allows it to be adapted to the user
application, (such as user-defined strategy for entering programming mode, choice of
communications protocol used to fetch the data to be stored). For example, it is possible to
download code from the SPI, SCI, USB or CAN interface and program it in the Flash. IAP
mode can be used to program any of the Flash sectors except Sector 0, which is write/erase
protected to allow recovery in case errors occur during the programming operation.
Related documentation
For details on Flash programming and ICC protocol, refer to the ST7 Flash Programming
Reference Manual and to the ST7 ICC Protocol Reference Manual
Flash Control/Status Register (FCSR)
This register is reserved for use by programming tool software. It controls the Flash
programming and erasing operations.
Table 4.
FCSR
Address (Hex)
R/W
7
0
0029h
Flash control/status register address and reset value
R/W
6
0
FCSR reset value
Register label
R/W
5
0
7
0
R/W
Figure
4
0
6
0
8). For more details on the pin locations, refer
R/W
3
0
5
0
4
0
R/W
2
0
Reset value:
3
0
Flash program memory
.
R/W
2
0
1
0
0000 0000 (00h)
1
0
R/W
0
0
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0
0