參數(shù)資料
型號: ST6246BB6/XXX
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP56
封裝: 0.600 INCH, PLASTIC, SDIP-56
文件頁數(shù): 66/73頁
文件大?。?/td> 1806K
代理商: ST6246BB6/XXX
Obsolete
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Product(s)
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ST6246B
1 GENERAL DESCRIPTION
1.1 INTRODUCTION
The ST6246B is mask programmed ROM version
of ST62T46B OTP devices.
It offers 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
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
0.5s min
TEST
15
14V typ
10
5
TEST
100mA
4mA typ
VR02001
max
150 s typ
t
VR02003
TEST
5V
100nF
47mF
PROTECT
100nF
VDD
VSS
ZPD15
15V
14V
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