ST6200C/ST6201C/ST6203C
TRANSFER OF CUSTOMER CODE (Cont’d)
12.6.2 ROM VERSION
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.
The ST6200C, 01C and 03C are mask pro-
grammed ROM version of ST62T00C, T01 and
T03C OTP devices.
In case the user wants to blow this fuse, high volt-
age must be applied on the TEST pin.
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 82. Programming wave form
Figure 81. Programming Circuit
0.5s min
TEST
5V
4.7µF
15
14V typ
10
100nF
5
V
V
DD
SS
TEST
150 µs typ
PROTECT
14V
TEST
400mA
max
100nF
ZPD15
15V
4mA typ
t
VR02001
VR02003
Note: ZPD15 is used for overvoltage protection
97/104
1
ETC [ ETC ]
