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SST32HF1621C-70-4E-LFS 데이터시트(PDF) 1 Page - Silicon Storage Technology, Inc |
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SST32HF1621C-70-4E-LFS 데이터시트(HTML) 1 Page - Silicon Storage Technology, Inc |
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1 / 36 page  ©2005 Silicon Storage Technology, Inc. S71236-04-000 5/05 1 The SST logo and SuperFlash are registered trademarks of Silicon Storage Technology, Inc. MPF+ and ComboMemory are trademarks of Silicon Storage Technology, Inc. These specifications are subject to change without notice. Preliminary Specifications FEATURES: • ComboMemories organized as: – SST32HF1621C: 1M x16 Flash + 128K x16 SRAM – SST32HF1641x: 1M x16 Flash + 256K x16 SRAM – SST32HF1681: 1M x16 Flash + 256K x16 SRAM – SST32HF3241x: 2M x16 Flash + 256K x16 SRAM – SST32HF3281: 2M x16 Flash + 512K 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: - SST32HFx1: 60 µA (typical) - SST32HFx1C: 12 µA (typical) • Flexible Erase Capability – Uniform 2 KWord sectors – Uniform 32 KWord size blocks • Erase-Suspend/Erase-Resume Capabilities • Security-ID Feature – SST: 128 bits; User: 128 bits • Hardware Block-Protection/WP# Input Pin – Bottom Block-Protection (bottom 32 KWord) • Fast Read Access Times: – Flash: 70 ns –SRAM: 70 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: 40 ms (typical) – Word-Program Time: 7 µs (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 • Package Available – 63-ball LFBGA (8mm x 10mm x 1.4mm) – 62-ball LFBGA (8mm x 10mm x 1.4mm) • All non-Pb (lead-free) devices are RoHS compliant PRODUCT DESCRIPTION The SST32HFx1/x1C ComboMemory devices integrate a CMOS flash memory bank with a CMOS SRAM mem- ory bank in a Multi-Chip Package (MCP), manufactured with SST’s proprietary, high performance SuperFlash technology. The SST32HF16x1/32x1 devices use a PseudoSRAM. The SST32HF16x1C/32x1C devices use standard SRAM. Featuring high performance Word-Program, the flash memory bank provides a maximum Word-Program time of 7 µsec. To protect against inadvertent flash write, the SST32HFx1/x1C devices contain on-chip hardware and software data protection schemes. The SST32HFx1/x1C devices offer a guaranteed endurance of 10,000 cycles. Data retention is rated at greater than 100 years. The SST32HFx1/x1C devices consist of two independent memory banks with respective bank enable signals. The Flash and SRAM memory banks are superimposed in the same memory address space. Both memory banks share common address lines, data lines, WE# and OE#. The memory bank selection is done by memory bank enable signals. The SRAM bank enable signal, BES# selects the SRAM bank. The flash memory bank enable signal, BEF# selects the flash memory bank. The WE# signal has to be used with Software Data Protection (SDP) command sequence when controlling the Erase and Program opera- tions in the flash memory bank. The SDP command sequence protects the data stored in the flash memory bank from accidental alteration. The SST32HFx1/x1C provide the added functionality of being able to simultaneously read from or write to the SRAM bank while erasing or programming in the flash memory bank. The SRAM memory bank can be read or written while the flash memory bank performs Sector- Erase, Bank-Erase, or Word-Program concurrently. All flash memory Erase and Program operations will automati- cally latch the input address and data signals and complete the operation in background without further input stimulus requirement. Once the internally controlled Erase or Pro- gram cycle in the flash bank has commenced, the SRAM bank can be accessed for Read or Write. Multi-Purpose Flash Plus + SRAM ComboMemory SST32HF1641 / SST32HF1681 / SST32HF3241 / SST32HF3281 SST32HF1621C / SST32HF1641C / SST32HF3241C SST32HF324 / 32832Mb Flash + 4Mb SRAM, 32Mb Flash + 8Mb SRAM (x16) MCP ComboMemories |
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