ST72T331N2T6 STMicroelectronics, ST72T331N2T6 Datasheet - Page 102
ST72T331N2T6
Manufacturer Part Number
ST72T331N2T6
Description
8-bit Microcontrollers - MCU OTP EPROM 8K SPI/SCI
Manufacturer
STMicroelectronics
Datasheet
1.ST72T331N2T6.pdf
(107 pages)
Specifications of ST72T331N2T6
Product Category
8-bit Microcontrollers - MCU
Rohs
yes
Core
ST7
Data Bus Width
8 bit
Maximum Clock Frequency
16 MHz
Program Memory Size
8 KB
Data Ram Size
384 B
On-chip Adc
Yes
Package / Case
TQFP-64
Mounting Style
SMD/SMT
A/d Bit Size
8 bit
A/d Channels Available
8
Interface Type
SCI, SPI
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
44
Number Of Timers
2
On-chip Dac
No
Program Memory Type
EPROM
Factory Pack Quantity
90
Supply Voltage - Max
5.5 V
Supply Voltage - Min
3.5 V
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ST72E331 ST72T331
8 GENERAL INFORMATION
8.1 EPROM ERASURE
EPROM version devices are erased by exposure
to high intensity UV light admitted through the
transparent window. This exposure discharges the
floating gate to its initial state through induced
photo current.
It is recommended that the EPROM devices be
kept out of direct sunlight, since the UV content of
sunlight can be sufficient to cause functional fail-
ure. Extended exposure to room level fluorescent
lighting may also cause erasure.
102/107
An opaque coating (paint, tape, label, etc...)
should be placed over the package window if the
product is to be operated under these lighting con-
ditions. Covering the window also reduces I
power-saving modes due to photo-diode leakage
currents.
An Ultraviolet source of wave length 2537 Å yield-
ing a total integrated dosage of 15 Watt-sec/cm
required to erase the device. It will be erased in 15
to 20 minutes if such a UV lamp with a 12mW/cm
power rating is placed 1 inch from the device win-
dow without any interposed filters.
DD
2
in
is
2
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