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Specifications
SKU: 1751317
x8 SRAM
| Parameter | Description | Value |
|---|---|---|
| Device Type | CMOS 256K x 8-bit SRAM | |
| Package | 44-pin TQFP (10x10x1.0mm) | |
| Operating Voltage (Vcc) | 3.3V ± 0.3V | 3.0V to 3.6V |
| Standby Current (Icc) | Vcc = 3.3V, Ta = 25°C | 1 μA |
| Active Current (Icc) | Vcc = 3.3V, f = 70 MHz, Ta = 25°C | 10 mA |
| Access Time (tAA) | Vcc = 3.3V, f = 70 MHz, Ta = 25°C | 7 ns |
| Data Retention (tR) | Vcc = 3.3V, Ta = -40°C to +85°C | 10 years |
| Temperature Range (Ta) | Industrial Temperature Range | -40°C to +85°C |
| Write Cycle Time (tWC) | Vcc = 3.3V, f = 70 MHz, Ta = 25°C | 7 ns |
| Read Cycle Time (tRC) | Vcc = 3.3V, f = 70 MHz, Ta = 25°C | 7 ns |
| Output Enable (OE) Delay (tOE) | Vcc = 3.3V, f = 70 MHz, Ta = 25°C | 2 ns |
| Write Enable (WE) Delay (tWE) | Vcc = 3.3V, f = 70 MHz, Ta = 25°C | 2 ns |
| Chip Enable (CE) Delay (tCE) | Vcc = 3.3V, f = 70 MHz, Ta = 25°C | 2 ns |
| Output Disable Time (tOH) | Vcc = 3.3V, f = 70 MHz, Ta = 25°C | 2 ns |
| Power-down Mode | Active Low | |
| Pin Configuration | CE, OE, WE, A0-A18, D0-D7, Vcc, GND |
Instructions for Use
Power Supply:
- Ensure the supply voltage (Vcc) is within the specified range of 3.0V to 3.6V.
- Connect the ground (GND) pin to a stable ground reference.
Signal Timing:
- The device operates at a maximum clock frequency of 70 MHz.
- Ensure that all timing parameters (tAA, tWC, tRC, tOE, tWE, tCE, tOH) are met to avoid data corruption or read/write errors.
Power Management:
- To enter power-down mode, set the Chip Enable (CE) pin to a high state.
- The standby current (Icc) is minimized in this mode to 1 μA.
Temperature Considerations:
- The device is rated for operation from -40°C to +85°C.
- Data retention is guaranteed for up to 10 years under these temperature conditions.
Pin Connections:
- Connect the address lines (A0-A18) to the appropriate address bus.
- Connect the data lines (D0-D7) to the data bus.
- Control signals (CE, OE, WE) should be connected to the corresponding control lines on your system.
Handling Precautions:
- Handle the device with care to avoid electrostatic discharge (ESD).
- Follow standard ESD protection guidelines during assembly and handling.
Storage:
- Store the device in a dry, cool environment to prevent moisture damage.
- Use anti-static packaging when storing or transporting the device.
Inquiry - GM76C256CLLFW-70
