ST6208C_10 Datasheet, PDF (98/104 Pages) STMicroelectronics – 8-bit MCUs with A/D converter,two timers, oscillator safeguard & safe reset

ST6208C/ST6209C/ST6210C/ST6220C
11.6.2 ROM VERSION
The ST6208C, 09C, 10C and 20C are mask pro-
grammed ROM version of ST62T08C, T09C,
T10C and T20C 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 79. Programming Circuit
5V 4.7µF
100nF
V_DD
V_SS
PROTECT
V_PP
14V
100nF
ZPD15
15V
VR02003
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 V_PP pin.
Figure 80. Programming wave form
V_PP
15
14V typ
10
5
0.5s min
100 µs max
V_PP
400mA
max
4mA typ
150 µs typ
t
VR02001
Note: ZPD15 is used for overvoltage protection
98/104
1