PRODUCT DESCRIPTION
The SST29SF020/040 and SST29VF020/040 are 256K x8 / 512K x8 CMOS Small-Sector Flash (SSF) manufactured with SST’s proprietary, high-performance CMOS SuperFlash technology. The split-gate cell design and thick-oxide tunneling injector attain better reliability and manufacturability compared with alternate approaches. The SST29SF020/040 devices write (Program or Erase) with a 4.5-5.5V power supply. The SST29VF020/040 devices write (Program or Erase) with a 2.7-3.6V power supply. These devices conform to JEDEC standard pin assignments for x8 memories.
   
FEATURES:
• Organized as 256K x8 / 512K x8
• Single Voltage Read and Write Operations
    – 4.5-5.5V for SST29SF020/040
    – 2.7-3.6V for SST29VF020/040
• Superior Reliability
    – Endurance: 100,000 Cycles (typical)
    – Greater than 100 years Data Retention
• Low Power Consumption:
    – Active Current: 10 mA (typical)
    – Standby Current:
        30 µA (typical) for SST29SF020/040
        1 µA (typical) for SST29VF020/040
• Sector-Erase Capability
    – Uniform 128 Byte sectors
• Fast Read Access Time:
    – 55 ns for SST29SF020/040
    – 70 ns for SST29VF020/040
• Latched Address and Data
• Fast Erase and Byte-Program:
    – Sector-Erase Time: 18 ms (typical)
    – Chip-Erase Time: 70 ms (typical)
    – Byte-Program Time: 14 µs (typical)
    – Chip Rewrite Time:
        4 seconds (typical) for SST29SF/VF020
        8 seconds (typical) for SST29SF/VF040
• Automatic Write Timing
    – Internal VPP Generation
• End-of-Write Detection
    – Toggle Bit
    – Data# Polling
• TTL I/O Compatibility for SST29SF020/040
• CMOS I/O Compatibility for SST29VF020/040
• JEDEC Standard
    – Flash EEPROM Pinouts and command sets
• Packages Available
    – 32-lead PLCC
    – 32-lead TSOP (8mm x 14mm)
• All non-Pb (lead-free) devices are RoHS compliant