m27c400 STMicroelectronics, m27c400 Datasheet
m27c400
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m27c400 Summary of contents
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... ELECTRONIC SIGNATURE – Manufacturer Code: 20h – Device Code: B8h DESCRIPTION The M27C400 Mbit EPROM offered in the two ranges UV (ultra violet erase) and OTP (one time programmable ideally suited for micro- processor systems requiring large data or program storage organised as either 512 Kwords of 8 bit or 256 Kwords of 16 bit ...
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... Q10 Q11 20 AI01635 DEVICE OPERATION The operating modes of the M27C400 are listed in the Operating Modes Table. A single power supply is required in the read mode. All inputs are TTL compatible except for V and 12V on A9 for the PP Electronic Signature. Read Mode The M27C400 has two organisations, Word-wide and Byte-wide ...
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... M27C400 Value –40 to 125 –50 to 125 –65 to 150 – – –2 to 13.5 – Q7-Q0 Q14-Q8 Q15A–1 Data Out Data Out Data Out Data Out Hi-Z Data Out Hi-Z Hi-Z Hi-Z Data In Data In ...
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... M27C400 Table 5. AC Measurement Conditions Input Rise and Fall Times Input Pulse Voltages Input and Output Timing Ref. Voltages Figure 3. Testing Input Output Waveform High Speed 3V 0V Standard 2.4V 0.4V (1) Table 6. Capacitance ( ° MHz) A Symbol Parameter Input Capacitance (except BYTEV C IN ...
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... PCB traces. CC Programming When delivered (and after each erasure for UV EPROM), all bits of the M27C400 are in the '1' state. Data is introduced by selectively program- ming '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. The only way to change die exposition to ultravio- let light (UV EPROM) ...
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... M27C400 -80 -100 Min Max Min Max , 100 100 100 ...
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... Figure 5. Word-Wide Read Mode AC Waveforms A0-A17 E G Q0-Q15 Note: BYTEV = Figure 6. Byte-Wide Read Mode AC Waveforms A–1,A0-A17 E G Q0-Q7 Note: BYTEV = V PP IL. VALID tAVQV tAXQX tGLQV tELQV VALID tAVQV tAXQX tGLQV tELQV M27C400 VALID tEHQZ tGHQZ Hi-Z AI01636 VALID tEHQZ tGHQZ Hi-Z AI01637 7/14 ...
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... M27C400 Figure 7. BYTE Transition AC Waveforms A0-A17 A–1 BYTEV PP Q0-Q7 Q8-Q15 tBLQZ Note: Chip Enable (E) and Output Enable ( Table 9. Programming Mode DC Characteristics ( ° 6.25V ± 0.25V Symbol Parameter I Input Leakage Current LI I Supply Current CC I Program Current PP V Input Low Voltage ...
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... A0-A17 Q0-Q15 BYTEV PP tVPHAV V CC tVCHAV E G (1) = 12.5V ± 0.25V) PP Parameter Test Condition and removed simultaneously or after V PP VALID tAVEL DATA IN tQVEL tEHQX tELEH PROGRAM M27C400 Min Max 120 0 130 DATA OUT tGLQV tGHQZ tGHAX tQXGL VERIFY ...
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... M27C400 in about 3 years, while it would take approximately 1 week to cause erasure when exposed to direct sunlight. If the M27C400 exposed to these types of lighting conditions for extended periods of time suggested that opaque labels be put over the M27C400 window to prevent unintentional era- sure ...
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... Note: 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 de- vice, please contact the STMicroelectronics Sales Office nearest to you. Table 12. Revision History Date August 1999 First Issue 09/22/00 AN620 Reference removed M27C400 - Revision Details M27C400 1 TR 11/14 ...
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... M27C400 Table 13. FDIP40W - 40 lead Ceramic Frit-seal DIP with window, Package Mechanical Data Symb Typ 1. 48.26 E 15. 2.54 ea. 14. 8.13 N Figure 10. FDIP40W - 40 lead Ceramic Frit-seal DIP with window, Package Outline Drawing is not to scale. 12/14 mm Min Max 5.72 0.51 1.40 3.91 4.57 3.89 4.50 0.41 0.56 – – ...
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... M27C400 inches Typ Min 0.175 – 0.025 0.015 0.140 0.015 0.045 0.008 2.039 1.900 – 0.583 0.530 0.100 – 0.600 – 0.600 0.120 0.060 0° PDIP Max – ...
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... M27C400 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 ...