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ST72321BXXX-AUTO Datasheet(PDF) 37 Page - STMicroelectronics

Part # ST72321BXXX-AUTO
Description  8-bit MCU for automotive with 32 to 60 Kbyte Flash/ROM, ADC, 5 timers, SPI, SCI, I2C interface
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72321BXXX-AUTO Datasheet(HTML) 37 Page - STMicroelectronics

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ST72321Bxxx-Auto
Flash program memory
37/247
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.
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.
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
4 Kbytes
2Kbytes
SECTOR 1
SECTOR 0
16 Kbytes
SECTOR 2
8K
16K
32K
60K
FLASH
FFFFh
EFFFh
DFFFh
3FFFh
7FFFh
1000h
24 Kbytes
MEMORY SIZE
8Kbytes
40 Kbytes
52 Kbytes
9FFFh
BFFFh
D7FFh
4K
10K
24K
48K


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