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AT27C512R-45PU
+StücklisteIC EPROM 512KBIT PARALLEL 28DIP
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HerstellerMikrochip-Technologie
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Herstellerteil #AT27C512R-45PU
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Spezifikationen
| Attribut | Wert |
| PartStatus | Active |
| BaseProductNumber | AT27C512 |
| DigiKeyProgrammable | Verified |
| MemoryType | Non-Volatile |
| MemoryFormat | EPROM |
| Technology | EPROM - OTP |
| MemorySize | 512Kbit |
| MemoryOrganization | 64K x 8 |
| MemoryInterface | Parallel |
| Voltage-Supply | 4.5V ~ 5.5V |
| OperatingTemperature | -40°C ~ 85°C (TC) |
| MountingType | Through Hole |
| Package | 28-DIP (0.600", 15.24mm) |
| SupplierDevicePackage | 28-PDIP |
| Packaging | Tube |
| AccessTime | 45 ns |
Übersicht
Description
AT27C512R-45PU is Atmel/Microchip’s 512-kbit parallel EPROM (erasable PROM) in a 28-pin Plastic DIP (PU) package. Key points:
- Organization: 64K × 8 (8 data lines D0–D7, 16 address lines A0–A15)
- Speed: 45 ns access time
- Voltage: 5 V supply (typical; Vcc ~4.5–5.5 V)
- Signals: CE, OE for reads; WE (and VPP) used for programming/erase
- Programming/erase: Requires programming voltage (VPP, typically ~12.5 V) and proper sequence; contents are erasable (UV-erasable in windowed variants or via a dedicated programmer)
- Type: Non-volatile read-only memory suitable for firmware storage in vintage hardware; largely supplanted by flash in new designs
Note: The R suffix denotes a variant/packaging option—consult the datasheet for exact pinout and electrical specs.
- Organization: 64K × 8 (8 data lines D0–D7, 16 address lines A0–A15)
- Speed: 45 ns access time
- Voltage: 5 V supply (typical; Vcc ~4.5–5.5 V)
- Signals: CE, OE for reads; WE (and VPP) used for programming/erase
- Programming/erase: Requires programming voltage (VPP, typically ~12.5 V) and proper sequence; contents are erasable (UV-erasable in windowed variants or via a dedicated programmer)
- Type: Non-volatile read-only memory suitable for firmware storage in vintage hardware; largely supplanted by flash in new designs
Note: The R suffix denotes a variant/packaging option—consult the datasheet for exact pinout and electrical specs.
Equivalent
Equivalent products are other vendors’ 512K×8, 28‑pin, 5V parallel EPROMs with ~450 ns access. Examples:
- AM27C512 (AMD)
- M27C512 (ST)
- MX27C512 (Macronix)
- W27C512 (Winbond)
Verify exact timing, pinout, and package (PU/DIP) before substituting.
- AM27C512 (AMD)
- M27C512 (ST)
- MX27C512 (Macronix)
- W27C512 (Winbond)
Verify exact timing, pinout, and package (PU/DIP) before substituting.
Features
Key features of AT27C512R-45PU:
- 512 Kbit EPROM: 64K × 8 organization
- Access time: 45 ns
- 5V read operation; 12.5V programming voltage (VPP)
- Windowed/UV-erasable EPROM (requires UV exposure to erase)
- 28-pin DIP package (PU)
- 16 address lines (A0–A15); 8 data I/O lines (D0–D7)
- Control pins: Chip Enable (CE), Output Enable (OE), and Write Enable (WE)
- Random-access, nonvolatile storage with parallel data I/O
- Industrial temperature range option: typically -40°C to 85°C (please verify datasheet)
- 512 Kbit EPROM: 64K × 8 organization
- Access time: 45 ns
- 5V read operation; 12.5V programming voltage (VPP)
- Windowed/UV-erasable EPROM (requires UV exposure to erase)
- 28-pin DIP package (PU)
- 16 address lines (A0–A15); 8 data I/O lines (D0–D7)
- Control pins: Chip Enable (CE), Output Enable (OE), and Write Enable (WE)
- Random-access, nonvolatile storage with parallel data I/O
- Industrial temperature range option: typically -40°C to 85°C (please verify datasheet)
Pinout
- Pin count: 28 pins (PDIP-28).
- Function: AT27C512R-45PU is a 512-kbit UV-erasable EPROM (64K × 8). It uses A0–A15 for addressing, D0–D7 for data, with CE and OE as control inputs, plus Vcc and GND. The “-45” denotes ~45 ns access time. Note: EPROMs are read-only in normal operation and require UV exposure to erase.
- Function: AT27C512R-45PU is a 512-kbit UV-erasable EPROM (64K × 8). It uses A0–A15 for addressing, D0–D7 for data, with CE and OE as control inputs, plus Vcc and GND. The “-45” denotes ~45 ns access time. Note: EPROMs are read-only in normal operation and require UV exposure to erase.
Manufacturer
- Manufacturer: Atmel Corporation (the AT27C512R-45PU is an Atmel part; Atmel was acquired by Microchip Technology in 2016).
- What kind of company: A semiconductor company that designs and manufactures memory ICs (EPROM/EEPROM) and microcontrollers.
- What kind of company: A semiconductor company that designs and manufactures memory ICs (EPROM/EEPROM) and microcontrollers.
Application
AT27C512R-45PU is a 512-kbit UV-erasable PROM (64 KB), 5V, 45 ns, 28-pin DIP. Typical applications include:
- Embedded firmware/ROM storage for microcontrollers and CPUs
- BIOS/firmware ROMs for development boards and consumer electronics
- Industrial automation and process-control equipment
- Automotive instrumentation and simple ECUs
- Telecommunication/network equipment
- Prototyping and production programming where UV-erasable PROMs are suitable in manufacturing/test environments
- Embedded firmware/ROM storage for microcontrollers and CPUs
- BIOS/firmware ROMs for development boards and consumer electronics
- Industrial automation and process-control equipment
- Automotive instrumentation and simple ECUs
- Telecommunication/network equipment
- Prototyping and production programming where UV-erasable PROMs are suitable in manufacturing/test environments
Package
Plastic DIP (28-pin) package. The “PU” suffix denotes Plastic DIP packaging for AT27C512R-45PU.
