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ST6215C Datasheet(PDF) 98 Page - STMicroelectronics

Part No. ST6215C
Description  8-BIT MCUs WITH A/D CONVERTER, TWO TIMERS, OSCILLATOR SAFEGUARD & SAFE RESET
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST6215C Datasheet(HTML) 98 Page - STMicroelectronics

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ST6215C/ST6225C
98/105
TRANSFER OF CUSTOMER CODE (Cont’d)
12.6.2 ROM Version
The ST6215C/25C are mask programmed ROM
version of ST62T15C,T25C OTP devices.
They offer the same functionality as OTP devices,
selecting as ROM options the options defined in
the programmable option byte of the OTP version.
Figure 81. Programming Circuit
Note: ZPD15 is used for overvoltage protection
ROM Readout Protection. If the ROM READOUT
PROTECTION option is selected, a protection
fuse can be blown to prevent any access to the
program memory content.
In case the user wants to blow this fuse, high volt-
age must be applied on the VPP pin.
Figure 82. Programming wave form
VR02003
VPP
5V
100nF
4.7µF
PROTECT
100nF
VDD
VSS
ZPD15
15V
14V
100 µs max
0.5s min
VPP
15
14V typ
10
5
VPP
400mA
4mA typ
VR02001
max
150 µs typ
t
1


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