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| Part Number | AT27C1024-55VI | AT27C1024-15VI | AT27C1024-45VI | AT27C1024-55JI | AT27C1024-55PI | AT27C1024-55VC |
|---|---|---|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
| Memory Type | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile | Non-Volatile |
| Memory Format | EPROM | EPROM | EPROM | EPROM | EPROM | EPROM |
| Technology | EPROM - OTP | EPROM - OTP | EPROM - OTP | EPROM - OTP | EPROM - OTP | EPROM - OTP |
| Memory Size | 1Mb (64K x 16) | 1Mb (64K x 16) | 1Mb (64K x 16) | 1Mb (64K x 16) | 1Mb (64K x 16) | 1Mb (64K x 16) |
| Memory Interface | Parallel | Parallel | Parallel | Parallel | Parallel | Parallel |
| Clock Frequency | - | - | - | - | - | - |
| Write Cycle Time - Word, Page | - | - | - | - | - | - |
| Access Time | 55 ns | 150 ns | 45 ns | 55 ns | 55 ns | 55 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 |
| 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) | 0°C ~ 70°C (TC) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Through Hole | Surface Mount |
| Package / Case | 40-TFSOP (0.488", 12.40mm Width) | 40-TFSOP (0.488", 12.40mm Width) | 40-TFSOP (0.488", 12.40mm Width) | 44-LCC (J-Lead) | 40-DIP (0.600", 15.24mm) | 40-TFSOP (0.488", 12.40mm Width) |
| Supplier Device Package | 40-VSOP | 40-VSOP | 40-VSOP | 44-PLCC (16.6x16.6) | 40-PDIP | 40-VSOP |
