Overview
The M27C256B-10C6TR is a 256 Kbit EPROM (Erasable Programmable Read-Only Memory) produced by STMicroelectronics. This device is available in two ranges: UV (ultra violet erase) and OTP (one time programmable). It is organized as 32,768 by 8 bits, making it ideally suited for microprocessor systems. The M27C256B is offered in various packages, including FDIP28W (window ceramic frit-seal package), PDIP28, and PLCC32, with the FDIP28W package featuring a transparent lid for UV erasure. STMicroelectronics also offers the M27C256B in ECOPACK® packages, which are lead-free and comply with environmental standards.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Memory Size | 256 Kbit (32Kb × 8) | |
| Supply Voltage (Read Operation) | 5V ± 10% | V |
| Access Time | 45ns (minimum) | ns |
| Active Current | 30mA at 5MHz | mA |
| Standby Current | 100µA | µA |
| Programming Voltage | 12.75V ± 0.25V | V |
| Programming Time | 100µs/Word | µs |
| Manufacturer Code | 20h | |
| Device Code | 8Dh |
Key Features
- Low Power Consumption: Active current of 30mA at 5MHz and standby current of 100µA.
- Two-Line Output Control: Features a two-line control function to minimize memory power dissipation and prevent output bus contention.
- Electronic Signature: Allows the reading of a binary code to identify the manufacturer and type of the device.
- ECOPACK® Packages: Available in lead-free packages that comply with environmental standards.
- Programming and Verify Modes: Supports parallel programming and verify operations to ensure correct programming).
Applications
The M27C256B-10C6TR is ideally suited for microprocessor systems and other applications where non-volatile memory is required. It can be used in various fields such as:
- Embedded systems
- Industrial control systems
- Automotive electronics
- Consumer electronics
- Any application requiring programmable non-volatile memory
Q & A
- What is the memory size of the M27C256B-10C6TR?
The memory size is 256 Kbit, organized as 32,768 by 8 bits).
- What are the different package options available for the M27C256B?
The device is available in FDIP28W, PDIP28, and PLCC32 packages).
- What is the supply voltage for read operations?
The supply voltage is 5V ± 10%).
- What is the access time of the M27C256B-10C6TR?
The access time is 45ns (minimum)).
- How does the two-line output control function work?
The two-line control function uses Chip Enable (E) and Output Enable (G) to control data output, minimizing power dissipation and preventing output bus contention).
- What is the programming voltage and time for the M27C256B?
The programming voltage is 12.75V ± 0.25V, and the programming time is 100µs per word).
- How does the electronic signature mode work?
The electronic signature mode allows reading a binary code to identify the manufacturer and type of the device by applying specific voltages to address lines).
- What are ECOPACK® packages, and why are they important?
ECOPACK® packages are lead-free and comply with environmental standards, making them environmentally friendly).
- Can multiple M27C256Bs be programmed in parallel?
- What is the standby current of the M27C256B-10C6TR?
The standby current is 100µA).
