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ST72411R Datasheet(PDF) 11 Page - STMicroelectronics

No. de pieza ST72411R
Descripción Electrónicos  8-BIT MCU WITH SMARTCARD INTERFACE, LCD DRIVER, 8-BIT TIMER, SAFE RESET AND SUPPLY MONITORING
PDF  71 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72411R Datasheet(HTML) 11 Page - STMicroelectronics

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FLASH PROGRAM MEMORY (Cont’d)
ISP2 Mode
This mode requires five signals (plus the VDD sig-
nal if necessary) to be connected to the program-
ming tool. These signals are:
– RESET: device reset
–VSS: device ground power supply
– ISPCLK2: ISP output serial clock pin
– ISPDATA2: ISP input serial data pin
– ISPSEL: Remote ISP mode selection. This pin
must be left high impedance (internal pull
down on pin ISPSEL) if the internal oscillator
is selected. Otherwise an appropriate pull-up
is needed (see Electrical Characteristics).
If any of these pins are used for other purposes on
the application, a serial resistor has to be imple-
mented to avoid a conflict if the other device forces
the signal level.
Figure 4 shows a typical hardware interface to a
standard ST7 programming tool. For more details
on the pin locations, refer to the device pinout de-
scription.
Figure 4. Typical Remote ISP2 Interface
1.5 Program Memory Read-out Protection
The read-out protection is enabled through an op-
tion bit.
For FLASH devices, when this option is selected,
the program and data stored in the FLASH memo-
ry are protected against read-out piracy (including
a re-write protection). When this protection option
is removed the entire FLASH program memory is
automatically erased.
ISPSEL
VSS
RESET
ISPCLK2
ISPDATA 2
ST7
HE10 CONNECTOR TYPE
TO PROGRAMMING TOOL
APPLICATION
4.7k
Ω
1



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