st62t60b STMicroelectronics, st62t60b Datasheet - Page 72

• Manufacturer Part Number: st62t60b
• Description: 8-bit Otp/eprom Mcus With A/d Converter, Auto-reload Timer, Eeprom And Spi
• Manufacturer: STMicroelectronics

72
ST6253B/60B/63B
1 GENERAL DESCRIPTION
1.1 INTRODUCTION
The ST6253B, ST6260B and ST6263B are mask
programmed
ST6260B and ST62T63B 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
72/75
4mA typ
1 4V typ
100mA
TES T
TES T
max
1 0
15
5
100 s max
ROM
150 s typ
0 .5s m in
versions
of
ST62T53B,
VR02001
t
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 2. Programming Circuit
Note: ZPD15 is used for overvoltage protection
TE S T
V
V
DD
S S
5V
100nF
47 F
100nF
m
ZP D15
15V
P ROTE CT
VR02003
14V