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DSAUD0080337.pdf
by Dallas Semiconductor
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DS1221 DS1221 Nonvolatile Controller x 4 Chip FEATURES ยท Converts CMOS RAMs into nonvolatile memories PIN ASSIGNMENT 1 16 VCCI VBAT1 2 15 VBAT2 *RST 3 14 CE
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DS1221
DS1259
RAM-5564