st62t18c STMicroelectronics, st62t18c Datasheet - Page 80

• Manufacturer Part Number: st62t18c
• Description: 8-bit Mcus With A/d Converter, Auto-reload Timer, Uart, Osg, Safe Reset And 20-pin Package
• Manufacturer: STMicroelectronics

ST6218C
1 GENERAL DESCRIPTION
1.1 INTRODUCTION
The ST6218C is mask programmed ROM version
of ST62T18C 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 1. Programming wave form
80/82
80
4mA typ
14V typ
100mA
TEST
TEST
max
15
10
5
150 s typ
0.5s min
VR02001
t
7.3 ROM READOUT PROTECTION
If the ROM READOUT PROTECTION option is
selected, a protection fuse can be blown to pre-
vent any access to the program memory content.
In case the user wants to blow this fuse, high volt-
age must be applied on the TEST pin.
Figure 1. Programming Circuit
Note: ZPD15 is used for overvoltage protection
TEST
V
V
DD
SS
5V
100nF
100nF
47mF
PROTECT
ZPD15
15V
VR02003
14V