ST72321BR9-AUTO View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

ST72321BR9-AUTO

8-bit MCU for automotive with 32 to 60 Kbyte Flash/ROM, ADC, 5 timers, SPI, SCI, I2C interface

STMicroelectronics 

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ST72321Bxxx-Auto

Flash program memory

Figure 5. Memory map and sector address

4K

1000h

3FFFh

7FFFh

9FFFh

BFFFh

D7FFh

DFFFh

EFFFh

FFFFh

8K

10K

16K

24K

32K

48K

60K

FLASH

MEMORY SIZE

SECTOR 2

2 Kbytes

8 Kbytes

16 Kbytes

4 Kbytes

4 Kbytes

24 Kbytes

40 Kbytes

52 Kbytes

SECTOR 1

SECTOR 0

4.3.1

Note:

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.

Readout protection selection depends on the device type:

● In Flash devices it is enabled and removed through the FMP_R bit in the option byte.

● In ROM devices it is enabled by mask option specified in the Option List.

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:

ICCCLK:

device power supply ground

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)

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