M27V102 STMICROELECTRONICS | Alldatasheet
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Technical content
1 Mbit (64Kb x 16) Low Voltage UV EPROM and OTP EPROM
P Q0-Q15 VPPVCC M27V102 G E VSS Figure 1. Logic Diagram
DESCRIPTION
The M27W102 is a low voltage 1 Mbit EPROM offeredin the two rangesUV (ultravioleterase)and OTP (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storageand is organized as 65,536words by 16 bits. The M27V102 operates in the read mode with a supply voltage as low as 3V. The decrease in operating power allows either a reduction of the size of the battery or an increase in the time be- tween battery recharges. The FDIP40W (window ceramic frit-seal package) has a transparent lid which allows the user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can then be written to the device by following the programming procedure. A0 - A15 Address Inputs Q0 - Q15 Data Outputs E Chip Enable G Output Enable P Program V PP Program Supply VCC Supply Voltage VSS Ground Table 1. Signal Names
- Minimum DC voltage on Input or Output is –0.5V with possible undershoot to –2.0V for a period less than 20ns. Maximum DC
CC +0.5V with possible overshoot to VCC +2V for a period less than 20ns. Table 2. Absolute Maximum Ratings(1) Table 3. Operating Modes Table 4. Electronic Signature
Notes:1. VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP .
- Maximum DC voltage on Output is VCC +0.5V
Table 7. Read Mode DC Characteristics(1) Notes:1. VCC must be applied simultaneously with or before VPP and removed simultaneously with or after VPP.
- Sampled only, not 100% tested.
- Speed obtained with High Speed AC measurementconditions.
Notes:1. VCC must be applied simultaneously with or before VPP and removed simultaneously with or after VPP.
- Sampled only, not 100% tested.
Figure 5. Read Mode AC Waveforms programming ’0’s into the desired bit locations.
Note: 1. VCC must be applied simultaneously with or before VPP and removed simultaneously with or after VPP . Table 9. ProgrammingMode DC Characteristics(1) Notes:1. VCC must be applied simultaneously with or before VPP and removed simultaneously with or after VPP .
- Sampled only, not 100% tested.
Table 10. ProgrammingMode AC Characteristics(1)
and G at VIL, P at VIH,VPP at 12.75V and VCC at 6.25V. On-Board Programming The M27V102 can be directly programmed in the application circuit. See the relevant Application Note AN620. Electronic Signature The Electronic Signature (ES) mode allows the reading out of a binary code from an EPROM that will identify its manufacturer and type. This mode is intended for use by programming equipment to automatically match the device to be programmed withits correspondingprogrammingalgorithm. The ES mode is functional in the 25°C ± 5°C ambient temperaturerange that is required when program- ming the M27V102. To activate the ES mode, the programming equipmentmust force 11.5Vto 12.5V on addressline A9 of the M27V102 with V PP =V CC = 5V. Two identifier bytes may then be sequenced from the deviceoutputs by togglingaddressline A0 from VILto VIH. All otheraddresslines must be held at VIL during Electronic Signature mode. Byte 0 (A0=VIL) represents the manufacturer code and byte 1 (A0=VIH) the device identifier code. For the STMicroelectronicsM27V102, these two iden-tifier bytes are given in Table 4 and can be read-out on outputs Q0 to Q7. Note that the M27V102 and M27C1024 have the same identifier bytes. ERASURE OPERATION (applies to UV EPROM) Theerasure characteristicsof the M27V102is such that erasure begins when the cells are exposed to light with wavelengths shorter than approximately 4000 Å. It should be noted that sunlight and some type of fluorescent lamps have wavelengths in the 3000-4000Årange. Researchshows that constant exposure to room level fluorescent lighting could erase a typical M27V102 in about 3 years, while it would take approximately 1 week to cause erasure when exposed to direct sunlight. If the M27V102 is to be exposed to these types of lighting condi- tions for extended periods of time, it is suggested that opaque labels be put over the M27V102 win- dow to prevent unintentionalerasure. The recom- mended erasure procedure for the M27V102 is exposure to short wave ultraviolet light which has wavelength 2537 Å. The integrated dose (i.e. UV intensity x exposure time) for erasure should be a minimum of 15 W-sec/cm 2. The erasure time with this dosage is approximately 15 to 20 minutes usingan ultravioletlamp with 12000µW/cm 2 power rating. The M27V102 should be placed within 2.5 cm (1 inch) of the lamp tubes during the erasure. Some lamps have a filter on their tubes which should be removed before erasure. M27V102
ORDERING INFORMATION SCHEME Note: 1. High Speed, see AC Characteristics section for further information. For a list of availableoptions(Speed, Package,etc...)or for furtherinformationon any aspect of this device, please contact the STMicroelectronics Sales Office nearest to you. Speed -90(1) 90 ns -100 100 ns -120 120 ns -150 150 ns -200 200 ns Package F FDIP40W B PDIP40 K PLCC44 N TSOP40 8 x 14mm Temperature Range 1 0 to 70 °C 6 –40 to 85 °C Option TR Tape & Reel Packing Example: M27V102 -90 K 1 TR M27V102
FDIP40W - 40 pin Ceramic Frit-seal DIP, with window FDIPW-a A L B1 B e D S E1 E N C α eA eB Symb mm inches Typ Min Max Typ Min Max A 5.72 0.225 A1 0.51 1.40 0.020 0.055 A2 3.91 4.57 0.154 0.180 A3 3.89 4.50 0.153 0.177 B 0.41 0.56 0.016 0.022 C 0.23 0.30 0.009 0.012 D 51.79 52.60 2.039 2.071 E1 13.06 13.36 0.514 0.526 eB 16.18 18.03 0.637 0.710 L 3.18 0.125 S 1.52 2.49 0.060 0.098 α 4° 11° 4° 11° N4 0 4 0 Drawing is not to scale. M27V102
PDIP40 - 40 pin Plastic DIP, 600 mils body width PDIP A L B1 B e1 D S E1 E N C α eA eBD2 Symb mm inches Typ Min Max Typ Min Max A1 0.64 0.38 – 0.025 0.015 – A2 3.56 3.91 0.140 0.154 B 0.38 0.53 0.015 0.021 B1 1.14 1.78 0.045 0.070 C 0.20 0.31 0.008 0.012 D 51.78 52.58 2.039 2.070 E 14.80 16.26 0.583 0.640 E1 13.46 13.99 0.530 0.551 eA 15.24 – – 0.600 – eB 15.24 17.78 0.600 0.700 L 3.05 3.81 0.120 0.150 S 1.52 2.29 0.060 0.090 α 0° 15° 0° 15É N4 0 4 0 Drawing is not to scale. M27V102
PLCC44 - 44 lead Plastic Leaded Chip Carrier, square PLCC D Ne E1 E Nd CP B D2/E2 e A R 0.51 (.020) 1.14 (.045) F Symb mm inches Typ Min Max Typ Min Max A 4.20 4.70 0.165 0.185 A1 2.29 3.04 0.090 0.120 A2 – 0.51 – 0.020 B 0.33 0.53 0.013 0.021 B1 0.66 0.81 0.026 0.032 D 17.40 17.65 0.685 0.695 D1 16.51 16.66 0.650 0.656 D2 14.99 16.00 0.590 0.630 E 17.40 17.65 0.685 0.695 E1 16.51 16.66 0.650 0.656 E2 14.99 16.00 0.590 0.630 F 0.00 0.25 0.000 0.010 N4 4 4 4 CP 0.10 0.004 Drawing is not to scale. M27V102
TSOP40 - 40 lead Plastic Thin Small Outline, 10 x 14mm TSOP-a E CP B e A N/2 D DIE C LA1 α Symb mm inches Typ Min Max Typ Min Max A 1.20 0.047 A1 0.05 0.15 0.002 0.006 A2 0.95 1.05 0.037 0.041 B 0.17 0.27 0.007 0.011 C 0.10 0.21 0.004 0.008 D 13.80 14.20 0.543 0.559 D1 12.30 12.50 0.484 0.492 E 9.90 10.10 0.390 0.398 L 0.50 0.70 0.020 0.028 α 0° 5° 0° 5° N4 0 4 0 CP 0.10 0.004 Drawing is not to scale. M27V102
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. 1998 STMicroelectronics - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. M27V102