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M27C512-45F1 데이터시트(PDF) 3 Page - STMicroelectronics |
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3 / 22 page M27C512 Description 3/22 1 Description The M27C512 is a 512 Kbit EPROM offered in the two ranges UV (ultra violet erase) and OTP (one time programmable). It is ideally suited for applications where fast turn-around and pattern experimentation are important requirements and is organized as 65536 by 8 bits. The FDIP28W (window ceramic frit-seal package) has 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. For applications where the content is programmed only one time and erasure is not required, the M27C512 is offered in FDIP28W, PDIP28, and PLCC32 packages. In order to meet environmental requirements, ST offers the M27C512 in ECOPACK® packages. ECOPACK packages are Lead-free. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Figure 1. Logic diagram Table 2. Signal names Name Description Direction A0-A15 Address Inputs Inputs Q0-Q7 Data outputs Outputs E Chip Enable Input GVPP Output Enable / Program Supply Input VCC Supply Voltage Supply VSS Ground Supply NC Not Connected Internally - DU Don’t Use - AI00761B 16 Q0-Q7 VCC M27C512 GVPP VSS 8 A0-A15 E |
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