ST7DALIF2 STMicroelectronics, ST7DALIF2 Datasheet - Page 21

• Manufacturer Part Number: ST7DALIF2
• Description: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
• Manufacturer: STMicroelectronics

Specifications of ST7DALIF2

• 8 Kbytes Single Voltage Flash Program Memory With Read-out Protection, In-circuit Programming And In-application Programming (icp And Iap). 10k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55°C.
• 256 Bytes Data Eeprom With Read-out Protection. 300k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55°C.
• Clock Sources: Internal 1% RC oscillator, crystal/ceramic resonator or external clock
• Five Power Saving Modes: Halt, Active-Halt, Wait and Slow, Auto Wake Up From Halt

ST7DALIF2
6.5
6.5.1
6.5.2
Caution:
mode unexpectedly during a reset. In the application, even if the pin is configured as output,
any reset will put it back in input pull-up.
Figure 4.
Memory protection
There are two different types of memory protection: Read Out Protection and Write/Erase
Protection which can be applied individually.
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. Both program and data E
In flash devices, this protection is removed by reprogramming the option. In this case, both
program and data E
reprogrammed.
Readout protection selection depends on the device type:
●
●
Flash write/erase protection
Write/erase protection, when set, makes it impossible to both overwrite and erase program
memory. It does not apply to E
applications and prevent any change being made to the memory content.
Once set, Write/erase protection can never be removed. A write-protected flash device is no
longer reprogrammable.
Write/erase protection is enabled through the FMP_W bit in the option byte.
APPLICATION
POWER SUPPLY
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.
Typical ICC interface
(See Note 3)
2
memory are automatically erased and the device can be
OPTIONAL
(See Note 4)
2
data. Its purpose is to provide advanced security to
ST7
HE10 CONNECTOR TYPE
10
ICC CONNECTOR
9
PROGRAMMING TOOL
7
8
ICC CONNECTOR
5
6
4
3
ICC Cable
1
2
2
memory are protected.
See Note 1 and Caution
Flash program memory
APPLICATION BOARD
See Note 2
APPLICATION
RESET SOURCE
APPLICATION
I/O
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