4Mbit (512Kx8) CMOS 5V Flash Memory 120ns 32-PLCC
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The AM29F040B-120JF is a 4 Mbit (512 K x 8-bit) CMOS parallel flash memory device manufactured by AMD. Designated with a -120 suffix, it specifies a maximum access time of 120 ns, suitable for applications requiring moderate read performance. This device operates from a single 5V power supply and features a standard JEDEC pinout for byte-wide memories. The JF designation indicates a 44-lead Plastic J-leaded Chip Carrier (PLCC) package. As indicated by the “RoHS” designation, this part conforms to the Restriction of Hazardous Substances Directive, limiting the use of specific hazardous materials in its construction. The “AMD 2009” likely refers to the date of manufacture or a revision date relevant to the specific batch or design. The “30/PACK” likely indicates the quantity of devices originally packaged together for distribution.