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M27V160 데이터시트(PDF) 2 Page - STMicroelectronics |
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M27V160 데이터시트(HTML) 2 Page - STMicroelectronics |
2 / 15 page M27V160 2/15 Figure 2B. SO Connections G Q0 Q8 A3 A0 E VSS A2 A1 A13 VSS A14 A15 Q7 A12 A16 BYTEVPP Q15A-1 Q5 Q2 Q3 VCC Q11 Q4 Q14 A9 A19 A18 A4 NC NC A7 AI01900 M27V160 8 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 20 19 18 17 Q1 Q9 A6 A5 Q6 Q13 44 39 38 37 36 35 34 33 A11 A10 Q10 21 Q12 40 43 1 42 41 A17 A8 Figure 2A. DIP Connections G Q0 Q8 A3 A0 E VSS A2 A1 A13 VSS A14 A15 Q7 A12 A16 BYTEVPP Q15A-1 Q5 Q2 Q3 VCC Q11 Q4 Q14 A9 A8 A17 A4 A18 A19 A7 AI01899 M27V160 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 20 19 18 17 Q1 Q9 A6 A5 Q6 Q13 42 39 38 37 36 35 34 33 A11 A10 Q10 21 Q12 40 41 Table 1. Signal Names A0-A19 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 NC Not Connected Internally DEVICE OPERATION The operating modes of the M27V160 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 M27V160 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. |
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