M87C257-15F6 STMicroelectronics, M87C257-15F6 Datasheet
M87C257-15F6
Specifications of M87C257-15F6
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M87C257-15F6 Summary of contents
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... Active Current 30mA – Standby Current 100µA Programming voltage: 12.75V ± 0.25V Programming times of around 3s Electronic signature – Manufacturer Code: 20h – Device Code: 80h ECOPACK® packages available May 2006 Address Latched 28 1 FDIP28W (F) PLCC32 (C) Rev 2 M87C257 1/9 www.st.com 1 ...
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... Two Line Output Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.4 System considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.5 Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.6 PRESTO II programming algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.7 Program Inhibit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.8 Program Verify . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.9 Electronic signature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2.10 Erasure operation (applies for UV EPROM Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . and AC parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5 Package mechanical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 6 Part numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2/22 M87C257 ...
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... M87C257 List of tables Table 1. Signal names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Table 3. Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Table 4. Electronic signature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Table 5. AC measurement conditions Table 6. Capacitance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Table 7. Read mode DC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Table 8. Programming mode DC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Table 9. Read mode AC characteristics Table 10. Read mode AC characteristics Table 11. Programming mode AC characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Table 12. FDIP28WB - 28 pin Ceramic Frit-seal DIP, with window (round 0.280" ...
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... AC testing input output waveform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 6. AC testing load circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 7. Read mode AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Figure 8. Programming and Verify modes AC waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Figure 9. FDIP28W - 28 pin Ceramic Frit-seal DIP, with window, package outline . . . . . . . . . . . . . . 18 Figure 10. PLCC32 - 32 pin Rectangular Plastic Leaded Chip Carrier, package outline 4/22 M87C257 ...
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... M87C257 1 Description The M87C257 is a 256 Kbit EPROM offered in the two ranges UV (ultra violet erase) and OTP (one time programmable). It incorporates latches for all address inputs to minimize chip count, reduce cost, and simplify the design of multiplexed bus systems and is organized as 32,768 by 8 bits. ...
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... Figure 3. LCC connections 6/22 Address Inputs Data Outputs Chip Enable Output Enable Address Strobe / Program Supply Supply Voltage Ground Not Connected Internally Don’t Use ASV A12 2 27 A14 A13 A11 M87C257 A10 AI00929 M87C257 AI00930 M87C257 A8 A9 A11 NC G A10 ...
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... M87C257 2 Device operation The modes of operation of the M87C257 are listed in the Operating Modes. A single power supply is required in the read mode. All inputs are TTL levels except for V for Electronic Signature. 2.1 Read mode The M87C257 has two control functions, both of which must be logically active in order to obtain data at the outputs ...
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... Programming When delivered (and after each erasure for UV EPROM), all bits of the M87C257 are in the '1' state. Data is introduced by selectively programming '0's into the desired bit locations. Although only '0's will be programmed, both '1's and '0's can be present in the data word. ...
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... Program Inhibit Programming of multiple M87C257s in parallel with different data is also easily accomplished. Except for E, all like inputs including G of the parallel M87C257 may be common. A TTL low level pulse applied to a M87C257's E input, with V program that M87C257. A high level E input inhibits the other M87C257s from being programmed ...
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... Research shows that constant exposure to room level fluorescent lighting could erase a typical M87C257 in about 3 years, while it would take approximately 1 week to cause erasure when exposed to direct sunlight. If the M87C257 exposed to these types of lighting conditions for extended periods of time suggested that opaque labels be put over the M87C257 window to prevent unintentional erasure ...
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... M87C257 3 Maximum rating Stressing the device above the rating listed in the Absolute Maximum Ratings table may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability ...
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... High Speed 10ns 1.5V High Speed 3V 0V Standard 2.4V 0.4V 1.3V 1N914 3.3k DEVICE UNDER TEST 30pF for High Speed 100pF for Standard C L includes JIG capacitance M87C257 Standard 20ns 0.4V to 2.4V 0.8V and 2V 1.5V 2.0V 0.8V AI01822 OUT AI01823B ...
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... M87C257 Table 6. Capacitance Symbol C Input Capacitance IN C Output Capacitance OUT ° MHz A 2. Sampled only, not 100% tested. Table 7. Read mode DC characteristics Symbol Parameter I Input Leakage Current LI I Output Leakage Current LO I Supply Current CC Supply Current I CC1 (Standby) TTL Supply Current ...
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... DC and AC parameters Figure 7. Read mode AC waveforms A0-A14 ASV Q0-Q7 14/22 VALID tASLAX tAVASL tASHASL tASLGL tAVQV tGLQV tELQV M87C257 tAXQX tEHQZ tGHQZ Hi-Z DATA OUT AI00931 ...
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... must be applied simultaneously with or before Speed obtained with High Speed AC measurement conditions. 4. Sampled only, not 100% tested. (1) (2) Test Parameter -45 Condition Min Max Min Max Min Max Min Max and removed simultaneously or after and AC parameters M87C257 (3) -60 -70 - ...
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... Sampled only, not 100% tested. 16/22 (1) (2) Test Parameter -90 Condition Min Max Min Max Min Max Min Max and removed simultaneously or after V PP M87C257 -10 -12 -15/-20 90 100 120 100 120 ± ± 10 M87C257 Unit 150 150 ...
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... M87C257 Figure 8. Programming and Verify modes AC waveforms A0-A14 Q0-Q7 ASV Table 11. Programming mode AC characteristics Symbol Alt t t Address Valid to Chip Enable Low AVEL Input Valid to Chip Enable Low QVEL VPHEL VPS VCHEL VCS t t Chip Enable Program Pulse Width ELEH Chip Enable High to Input Transition ...
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... M87C257 FDIPW-a inches Typ Min Max 0.225 0.020 0.055 0.154 0.180 0.153 0.177 0.016 0.022 0.057 – – 0.009 0.012 1 ...
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... M87C257 Figure 10. PLCC32 - 32 pin Rectangular Plastic Leaded Chip Carrier, package outline E3 1. Drawing is not to scale. Table 13. PLCC32 - 32 pin Rectangular Plastic Leaded Chip Carrier, package mechanical data Symbol Typ 7. 10. millimeters Min Max 3.18 3.56 1.53 2.41 0.38 0.33 0.53 0.66 ...
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... Options TR = Tape & Reel Packing 1. High Speed, see AC Characteristics section for further information. For a list of available options (Speed, Package, etc...) or for further information on any aspect of this device, please contact the STMicroelectronics Sales Office nearest to you. 20/22 M87C257 - M87C257 1 X ...
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... M87C257 7 Revision history Table 15. Document revision history Date 01-Jun-1996 23-May-2006 Revision 1 Initial release. Document converted to new template (sections added, information moved). 2 Packages are ECOPACK® compliant. Package specifications updated (see Section 5: Package X option removed from Revision history Changes mechanical). Table 15: Document revision history ...
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... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 22/22 Please Read Carefully: © 2006 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com M87C257 ...