This is a technical specification of SST39SF010A / SST39SF020A / SST39SF040.
The SST39SF010A/020A/040 series are CMOS Multi‑Purpose Flash (MPF) devices built with Silicon Storage Technology's SuperFlash technology. They support 5.0 V read and write operations and are available in 32‑pin PLCC, TSOP and PDIP packages.
Key features include organized densities of 128K‑/256K‑/512K‑x8, uniform 4 KB sectors, fast read access (45‑70 ns), byte‑program time of 14 µs, chip‑erase time of 70 ms, typical active current of 10 mA, standby current of 30 µA, and an endurance of 100 000 cycles with data retention exceeding 100 years.
| Organization | 128K x8 / 256K x8 / 512K x8 |
|---|---|
| Operating Voltage | 5.0 V |
| Endurance | 100,000 cycles (typical) |
| Data Retention | greater than 100 years |
| Active Current | 10 mA (typical) |
| Standby Current | 30 µA (typical) |
| Sector Size | 4 KB (uniform) |
| Read Access Time | 45 ns – 70 ns |
| Byte‑Program Time | 14 µs (typical) |
| Chip‑Erase Time | 70 ms (typical) |
| Package Types | 32‑pin PLCC, 32‑pin TSOP (8 mm × 14 mm), 32‑pin PDIP |
They operate with a single 5.0 V supply for both read and write operations.
The devices use uniform 4 KB sectors for erase operations.
They are rated for 100,000 erase‑write cycles (typical).