BQ4013MA-85 vs BQ4011YMA-150
| Part Number |
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| Category | General Memory | General Memory |
| Manufacturer | Texas Instruments | Texas Instruments |
| Description | IC NVSRAM 1MBIT PAR 32DIP MODULE | IC NVSRAM 256KBIT PARALLEL 28DIP |
| Package | Tube | Cut Tape (CT) |
| Series | - | - |
| Voltage - Supply | 4.75V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | 32-DIP Module (0.610\", 15.49mm) | 28-DIP Module (0.61\", 15.49mm) |
| Supplier Device Package | 32-DIP Module (18.42x42.8) | 28-DIP Module (18.42x37.72) |
| Memory Size | 1Mb (128K x 8) | 256Kb (32K x 8) |
| Technology | NVSRAM (Non-Volatile SRAM) | NVSRAM (Non-Volatile SRAM) |
| Memory Type | Non-Volatile | Non-Volatile |
| Clock Frequency | - | - |
| Access Time | 85 ns | 150 ns |
| Memory Format | NVSRAM | NVSRAM |
| Write Cycle Time - Word, Page | 85ns | 150ns |
| Memory Interface | Parallel | Parallel |
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1. What are volatile and non-volatile memory?
Volatile memory loses data when power is off, such as RAM; non-volatile memory retains data after power is off, such as ROM and flash memory.
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2. What is ECC memory?
ECC (error correction code) memory detects and corrects single-bit errors in stored data, improving the reliability of memory and is commonly used in servers and data centers.
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3. What is virtual memory and how does it work?
Virtual memory is a technology that uses hard disk space as memory, allowing the system to use hard disk space to expand memory when physical RAM is insufficient, improving the system's multitasking capabilities.
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4. Why is the DRAM refresh rate important?
DRAM needs to be refreshed regularly to maintain data. The refresh rate affects the power consumption and speed of the memory. The higher the refresh rate, the faster the memory responds, but it also increases power consumption.
