(China (Mainland))
Product Summary
The W29C020C-90B is a 2-megabit, 5-volt only CMOS flash memory. The W29C020C-90B can be written (erased and programmed) in-system with a standard 5V power supply. A 12-volt VPP is not required. The unique cell architecture of the W29C020C-90B results in fast write (erase/program) operations with extremely low current consumption compared to other comparable 5- volt flash memory products. The W29C020C-90B can also be written (erased and programmed) by using standard EPROM programmers.
Parametrics
W29C020C-90B absolute maximum ratings: (1)Power Supply Voltage to VSS Potential: -0.5 to +7.0 V; (2)Operating Temperature: 0 to +70 °C; (3)Storage Temperature: -65 to +150 °C; (4)D.C. Voltage on Any Pin to Ground Potential Except A9: -0.5 to VDD +1.0 V; (5)Transient Voltage (<20 nS )on Any Pin to Ground Potential: -1.0 to VDD +1.0 V; (6)Voltage on A9 and OE Pin to Ground Potential: -0.5 to 12.5 V; (7)Power Supply Current ICC CE = OE = VIL, WE = VIH, all DQs open Address inputs = VIL/VIH, at f = 5 MHz: 50 mA.
Features
W29C020C-90B features: (1)Single 5-volt write (erase and program)operations; (2)Fast page-write operations; (3)Fast chip-erase operation: 50 mS; (4)Two 8 KB boot blocks with lockout; (5)Whole chip cycling: 10K (typ.); (6)Read access time: 70/90/120 nS; (7)Twenty-year data retention; (8)Software and hardware data protection; (9)Low power consumption; (10)Automatic write (erase/program)timing with internal VPP generation; (11)End of write (erase/program)detection; (12)Latched address and data; (13)All inputs and outputs directly TTL compatible; (14)JEDEC standard byte-wide pinouts; (15)Available packages: 32-pin 600 mil DIP, 32-pin TSOP, and 32-pin PLCC.
Diagrams
