SM5859AF - Nippon Precision Circuits Inc

SM5859AF compression and non compression type antishock memory controller

Pin number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 Pine name VDD UC1 UC2 UC3 UC4 UC5 NTEST1 NTEST2 CLK VSS YSRDATA YLRCK YSCK ZSCK ZLRCK ZSRDATA YFLAG YFCLK YBLKCK NRESET ZSENSE UC6 YDMUTE YMLD YMDATA YMCLK NOE (NCAS2) NCAS D2 D3 D0 D1 NWE NRAS A9 A8 A7 A6 A5 A4 A0 A1 A2 A3 I/.

Features

- 2-channel processing - Serial data input
•2s complement, 16-bit/MSB first, rear-packed format - System clock input
•384fs (16.9344 MHz) - Anti-shock memory controller - ADPCM compression method
•4-level compression mode selectable 4-bit compression mode 2.78 s/Mbit 5-bit compression mode 2.22 s/Mbit 6-bit compression mode 1.85 s/Mbit Full-bit non compression mode 0.74 s/Mbit
•4 external DRAM configurations selectable 2×4M DRAM (1M×4 bits) 1×4M DRAM (1M×4 bits) 2×1M DRAM (256K×4 bits) 1×1M DRAM (256K×4 bits) - Compression mode selectable - Microcontroller interface
•Serial command write and s.