BQ4010YMA-85N vs BQ4011MA-150
| Part Number |
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| Category | General Memory | General Memory |
| Manufacturer | Texas Instruments | Texas Instruments |
| Description | IC NVSRAM 64KBIT PARALLEL 28DIP | IC NVSRAM 256KBIT PARALLEL 28DIP |
| Package | Cut Tape (CT) | -Reel® |
| Series | - | - |
| Voltage - Supply | 4.5V ~ 5.5V | 4.75V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | 28-DIP Module (0.61\", 15.49mm) | 28-DIP Module (0.61\", 15.49mm) |
| Supplier Device Package | 28-DIP Module (18.42x37.72) | 28-DIP Module (18.42x37.72) |
| Memory Size | 64Kb (8K 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. Is there a relationship between the capacity and speed of memory?
The capacity and speed of memory are not directly related. The capacity refers to the amount of data that the memory can hold, while the speed determines the speed at which the memory reads and writes data. Generally speaking, faster memory such as RAM has a smaller capacity, while large-capacity storage such as HDD is relatively slow.
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2. What is the difference between cache and RAM?
Cache is a high-speed memory between the CPU and the main memory, which is used to temporarily store data and instructions commonly used by the CPU to speed up the system. RAM is the main storage of the system, which is used to store data for applications and operating systems.
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3. What is the difference between SRAM and DRAM?
SRAM (static RAM) does not require periodic refreshes and is faster but more expensive; DRAM (dynamic RAM) requires periodic refreshes and has a higher storage density and is suitable for main memory.
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4. 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.
