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| Part Number | AT27C040-90TU | AT27C080-90TU | AT27C020-90TU | AT27C040-70TU | AT27C040-90JU | AT27C040-90PU | AT27C040-90TC | AT27C040-90TI |
|---|---|---|---|---|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Active | Active | Obsolete | Obsolete |
| Memory Type | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile |
| Memory Format | EPROM | EPROM | EPROM | EPROM | EPROM | EPROM | EPROM | EPROM |
| Technology | EPROM - OTP | EPROM - OTP | EPROM - OTP | EPROM - OTP | EPROM - OTP | EPROM - OTP | EPROM - OTP | EPROM - OTP |
| Memory Size | 4Mb (512K x 8) | 8Mb (1M x 8) | 2Mb (256K x 8) | 4Mb (512K x 8) | 4Mb (512K x 8) | 4Mb (512K x 8) | 4Mb (512K x 8) | 4Mb (512K x 8) |
| Memory Interface | Parallel | Parallel | Parallel | Parallel | Parallel | Parallel | Parallel | Parallel |
| Clock Frequency | - | - | - | - | - | - | - | - |
| Write Cycle Time - Word, Page | - | - | - | - | - | - | - | - |
| Access Time | 90 ns | 90 ns | 90 ns | 70 ns | 90 ns | 90 ns | 90 ns | 90 ns |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TC) | -40°C ~ 85°C (TC) | -40°C ~ 85°C (TC) | -40°C ~ 85°C (TC) | -40°C ~ 85°C (TC) | -40°C ~ 85°C (TC) | 0°C ~ 70°C (TC) | -40°C ~ 85°C (TC) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Through Hole | Surface Mount | Surface Mount |
| Package / Case | 32-TFSOP (0.724", 18.40mm Width) | 32-TFSOP (0.724", 18.40mm Width) | 32-TFSOP (0.724", 18.40mm Width) | 32-TFSOP (0.724", 18.40mm Width) | 32-LCC (J-Lead) | 32-DIP (0.600", 15.24mm) | 32-TFSOP (0.724", 18.40mm Width) | 32-TFSOP (0.724", 18.40mm Width) |
| Supplier Device Package | 32-TSOP | 32-TSOP | 32-TSOP | 32-TSOP | 32-PLCC (13.97x11.43) | 32-PDIP | 32-TSOP | 32-TSOP |
