ST7FLCD1 datasheet(31/95 Pages) STMICROELECTRONICS

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ST7FLCD1

Flash Program Memory

This register is reserved for use by Programming Tool software. It controls the Flash programming

and erasing operations.

For details on customizing Flash programming methods and In-Circuit Testing, refer to the ST7

Flash Programming Reference Manual and relevant Application Notes.

5.8

Flash Option Bytes

Each device is available for production in user programmable versions (Flash) as well as in factory

coded versions (ROM). Flash devices are shipped to customers with a default content (FFh), while

ROM factory coded parts contain the code supplied by the customer. This implies that Flash

devices have to be configured by the customer using the Option Bytes while the ROM devices are

factory-configured.

The option bytes are used to select the hardware configuration of the microcontroller. They have no

address in the memory map and can be accessed only in programming mode (for example, using a

standard ST7 programming tool). The default content of the Flash is fixed to FFh. To program

directly the Flash devices using ICP, Flash devices are shipped to customers with the internal RC

clock source enabled. In masked ROM devices, the option bytes are fixed in hardware by the ROM

code.

Static Option Byte 1

OPT0 = FMP_R Flash memory read-out protection

This option indicates if the user Flash memory is protected against read-out piracy. This protection

is based on a read and write protection of the memory in Test and ICP modes. Erasing the option

bytes when the FMP_R option is selected causes the entire user memory to be erased first.

Read-out protection enabled

Read-out protection disabled

Static Option Byte 2

654

FMP_R

Default

654

Default

ST7FLCD1 数据表(PDF) 31 Page - STMicroelectronics