st62t65cm3 STMicroelectronics, st62t65cm3 Datasheet - Page 82

• Manufacturer Part Number: st62t65cm3
• Description: 8-bit Otp/eprom Mcus With A/d Converter, Safe Reset, Auto-reload Timer, Eeprom And Spi
• Manufacturer: STMicroelectronics

ST6255C ST6265B
1 GENERAL DESCRIPTION
1.1 INTRODUCTION
The ST6255C and ST6265B are mask pro-
grammed ROM version of ST62T55C and
ST62T65C 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,
except the LVD & OSG options that are not availa-
ble on the ST6265B ROM device.
Figure 54. Programming Waveform
82/86
4mA typ
14V typ
100mA
TEST
TEST
max
15
10
5
150 µs typ
0.5s min
VR02001
t
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.
In case the user wants to blow this fuse, high volt-
age must be applied on the TEST pin.
Figure 55. Programming Circuit
Note: ZPD15 is used for overvoltage protection
TEST
V
V
DD
SS
5V
100nF
47mF
100nF
PROTECT
ZPD15
15V
VR02003
14V