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PRODUCT DESCRIPTION

The SST32HF20x/40x ComboMemory devices integrate a 128K x16 or 256K x16 CMOS flash memory bank with a 64K x16 or 128K x16 CMOS SRAM memory bank in a Multi-Chip Package (MCP), manufactured with SST’s proprietary, high performance SuperFlash technology.

FEATURES:

? MPF + SRAM ComboMemory

– SST32HF201: 128K x16 Flash + 64K x16 SRAM

– SST32HF202: 128K x16 Flash + 128K x16 SRAM

– SST32HF401: 256K x16 Flash + 64K x16 SRAM

– SST32HF402: 256K x16 Flash + 128K x16 SRAM

? Single 2.7-3.3V Read and Write Operations

? Concurrent Operation

– Read from or write to SRAM while Erase/Program Flash

? Superior Reliability

– Endurance: 100,000 Cycles (typical)

– Greater than 100 years Data Retention

? Low Power Consumption:

– Active Current: 15 mA (typical) for Flash or SRAM Read

– Standby Current: 20 ?A (typical)

? Flexible Erase Capability

– Uniform 2 KWord sectors

– Uniform 32 KWord size blocks

? Fast Read Access Times:

– Flash: 70 and 90 ns

– SRAM: 70 and 90 ns

? Latched Address and Data for Flash

? Flash Fast Erase and Word-Program:

– Sector-Erase Time: 18 ms (typical)

– Block-Erase Time: 18 ms (typical)

– Chip-Erase Time: 70 ms (typical)

– Word-Program Time: 14 ?s (typical)

– Chip Rewrite Time:

SST32HF201/202: 2 seconds (typical)

SST32HF401/402: 4 seconds (typical)

? Flash Automatic Erase and Program Timing

– Internal VPP Generation

? Flash End-of-Write Detection

– Toggle Bit

– Data# Polling

? CMOS I/O Compatibility

? JEDEC Standard Command Set

? Conforms to Flash pinout

? Package Available

– 48-ball LFBGA (6mm x 8mm)