ST72321R7-Auto datasheet(30/243 Pages) STMICROELECTRONICS

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Flash program memory

ST72321xx-Auto

30/243

Doc ID 13829 Rev 1

Figure 5.

Memory map and sector address

4.3.1

Readout protection

Readout protection, when selected, provides a protection against program memory content

extraction and against write access to Flash memory. Even if no protection can be

considered as totally unbreakable, the feature provides a very high level of protection for a

general purpose microcontroller.

In Flash devices, this protection is removed by reprogramming the option. In this case, the

entire program memory is first automatically erased and the device can be reprogrammed.

Note:

4.4

ICC interface

ICC needs a minimum of 4 and up to 6 pins to be connected to the programming tool (see

Figure 6). These pins are:

RESET:

device reset

VSS:

device power supply ground

ICCCLK:

ICC output serial clock pin

ICCDATA:

ICC input/output serial data pin

ICCSEL/VPP:

programming voltage

OSC1 (or OSCIN): main clock input for external source (optional)

VDD:

application board power supply (optional, see Figure 6, Note 3)

4 Kbytes

2Kbytes

SECTOR 1

SECTOR 0

16 Kbytes

SECTOR 2

16K

32K

60K

FLASH

FFFFh

EFFFh

DFFFh

3FFFh

7FFFh

1000h

24 Kbytes

MEMORY SIZE

8Kbytes

40 Kbytes

52 Kbytes

9FFFh

BFFFh

D7FFh

10K

24K

48K

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