st62t62c STMicroelectronics, st62t62c Datasheet - Page 74

• Manufacturer Part Number: st62t62c
• Description: 8-bit Otp/eprom Mcus With A/d Converter, Safe Reset, Auto-reload Timer And Eeprom
• Manufacturer: STMicroelectronics

ST6252C ST6262B
1 GENERAL DESCRIPTION
1.1 INTRODUCTION
The ST6252C and ST6262B are mask pro-
grammed ROM version of ST62T52C and
ST62T62C OTP devices.
Figure 1. Programming Waveform
1.2 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.
74/78
4mA typ
14V typ
100mA
TEST
TEST
max
15
10
5
150 µs typ
0.5s min
VR02001
t
They offer the same functionality as OTP devices,
selecting as ROM options the options defined in
the programmable option byte of the OTP version,
except the LVD & OSG options that are not availa-
ble on the ST6262B ROM device.
In case the user wants to blow this fuse, high volt-
age must be applied on the TEST pin.
Figure 2. Programming Circuit
Note: ZPD15 is used for overvoltage protection
TEST
V
V
DD
SS
5V
100nF
100nF
47mF
PROTECT
ZPD15
15V
VR02003
14V