TS80C54X2 TEMIC [TEMIC Semiconductors], TS80C54X2 Datasheet - Page 39
TS80C54X2
Manufacturer Part Number
TS80C54X2
Description
8-bit CMOS Microcontroller 0-60 MHz
Manufacturer
TEMIC [TEMIC Semiconductors]
Datasheet
1.TS80C54X2.pdf
(58 pages)
- Current page: 39 of 58
- Download datasheet (289Kb)
8.4 EPROM Erasure (Windowed Packages Only)
Erasing the EPROM erases the code array, the encryption array and the lock bits returning the parts to full
functionality.
Erasure leaves all the EPROM cells in a 1’s state (FF).
8.4.1 Erasure Characteristics
The recommended erasure procedure is exposure to ultraviolet light (at 2537 Å) to an integrated dose at least 15
W-sec/cm
of about 25 mm, should be sufficient. An exposure of 1 hour is recommended with most of standard erasers.
Erasure of the EPROM begins to occur when the chip is exposed to light with wavelength shorter than approximately
4,000 Å. Since sunlight and fluorescent lighting have wavelengths in this range, exposure to these light sources
over an extended time (about 1 week in sunlight, or 3 years in room-level fluorescent lighting) could cause
inadvertent erasure. If an application subjects the device to this type of exposure, it is suggested that an opaque
label be placed over the window.
Rev. B - Aug. 31, 1999
2
ALE/PROG
. Exposing the EPROM to an ultraviolet lamp of 12,000 W/cm
EA/VPP
A0-A12
Control sig-
nals
D0-D7
12.75V
5V
0V
Figure 12. Programming and Verification Signal’s Waveform
Programming Cycle
Data In
100 s
Read/Verify Cycle
Data Out
2
rating for 30 minutes, at a distance
TS80C54X2/C58X2
TS87C54X2/C58X2
39
Related parts for TS80C54X2
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
8A SCRS
Manufacturer:
STMICROELECTRONICS [STMicroelectronics]
Datasheet:
Part Number:
Description:
Low-Power, High-Speed CMOS Analog Switches
Manufacturer:
TEMIC [TEMIC Semiconductors]
Datasheet:
Part Number:
Description:
Precision CMOS Analog Switches
Manufacturer:
TEMIC [TEMIC Semiconductors]
Datasheet:
Part Number:
Description:
13 mm Seven Segment Display
Manufacturer:
TEMIC [TEMIC Semiconductors]
Datasheet:
Part Number:
Description:
IF Amplifier / Converter for DVB (Cable)
Manufacturer:
TEMIC [TEMIC Semiconductors]
Datasheet:
Part Number:
Description:
DVB-Cable IF Converter and Full Multi-Standard Video-/Sound IF Processing
Manufacturer:
TEMIC [TEMIC Semiconductors]
Datasheet:
Part Number:
Description:
Video IF amplifier for multistandard TV receiver and VTR appliances
Manufacturer:
TEMIC Semiconductors
Datasheet:
Part Number:
Description:
FM-Receiving Condition Analyser and Multipath Noise Cancellation
Manufacturer:
TEMIC Semiconductors
Datasheet:
Part Number:
Description:
Multi Standard Feature Phone Integrated Circuit
Manufacturer:
TEMIC Semiconductors
Datasheet:
Part Number:
Description:
CMOS single-chip 8 bit microcontroller, external ROM, 128 bytes of RAM, 32 I/O lines, 16 bit timers, 16MHz
Manufacturer:
TEMIC Semiconductors
Datasheet:
Part Number:
Description:
Receiver for Point-to-Point Multiplex Systems
Manufacturer:
TEMIC Semiconductors
Datasheet:
Part Number:
Description:
U3760MBLow-Voltage Standard Telephone Circuit
Manufacturer:
TEMIC Semiconductors
Datasheet:
Part Number:
Description:
Low-Voltage Electronic Speech Circuit with Dialer Interface
Manufacturer:
TEMIC Semiconductors
Datasheet:
Part Number:
Description:
Manufacturer:
TEMIC Semiconductors
Datasheet: