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M27W400-120XB6TR Datenblatt(PDF) 2 Page - STMicroelectronics |
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M27W400-120XB6TR Datenblatt(HTML) 2 Page - STMicroelectronics |
2 / 15 page M27W400 2/15 Figure 2A. DIP Connections Q0 Q8 Q1 Q11 A2 VSS A1 A0 A14 Q15A–1 A15 A16 Q14 A13 BYTEVPP VSS Q7 Q12 Q10 Q9 VCC G Q4 Q6 A10 A9 E A3 A17 A8 A6 AI03097 M27W400 8 1 2 3 4 5 6 7 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 Q3 Q2 A5 A4 Q13 Q5 40 39 38 37 36 35 34 33 A12 A11 A7 Table 1. Signal Names A0-A17 Address Inputs Q0-Q7 Data Outputs Q8-Q14 Data Outputs Q15A–1 Data Output / Address Input E Chip Enable G Output Enable BYTEVPP Byte Mode / Program Supply VCC Supply Voltage VSS Ground Figure 2B. LCC Connections AI03604 A14 Q7 23 Q0 Q8 Q1 A4 A0 E VSS A3 A2 12 A16 1 BYTEVPP A13 Q6 44 M27W400 A12 VSS Q14 34 A1 A15 Q15A–1 G DEVICE OPERATION The operating modes of the M27W400 are listed in the Operating Modes Table. A single power supply is required in the read mode. All inputs are TTL compatible except for VPP and 12V on A9 for the Electronic Signature. Read Mode The M27W400 has two organisations, Word-wide and Byte-wide. The organisation is selected by the signal level on the BYTEVPP pin. When BYTEVPP is at VIH the Word-wide organisation is selected and the Q15A–1 pin is used for Q15 Data Output. When the BYTEVPP pin is at VIL the Byte-wide or- ganisation is selected and the Q15A–1 pin is used for the Address Input A–1. When the memory is logically regarded as 16 bit wide, but read in the Byte-wide organisation, then with A–1 at VIL the lower 8 bits of the 16 bit data are selected and with A–1 at VIH the upper 8 bits of the 16 bit data are selected. |
Ähnliche Teilenummer - M27W400-120XB6TR |
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Ähnliche Beschreibung - M27W400-120XB6TR |
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