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W29C020CT-90B from WB

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W29C020CT-90B

Manufacturer: WB

256K X 8 CMOS FLASH MEMORY

Partnumber Manufacturer Quantity Availability
W29C020CT-90B,W29C020CT90B WB 2400 In Stock

Description and Introduction

256K X 8 CMOS FLASH MEMORY The part **W29C020CT-90B** is a **2M-bit (256K x 8) CMOS Flash Memory** manufactured by **Winbond (WB)**. Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Memory Size:** 2M-bit (256K x 8)  
- **Technology:** CMOS Flash Memory  
- **Access Time:** 90ns  
- **Supply Voltage:** 5V ± 10%  
- **Operating Current:** 30mA (typical)  
- **Standby Current:** 100µA (typical)  
- **Sector Architecture:**  
  - Uniform 4K-byte sectors  
  - Supports sector erase  
- **Endurance:** 100,000 program/erase cycles  
- **Data Retention:** 10 years minimum  

### **Descriptions:**  
- **Package Type:** 32-pin TSOP (Thin Small Outline Package)  
- **Interface:** Parallel  
- **Command Set:** JEDEC-compatible  
- **Boot Block Support:** No  
- **Write Protection:** Software-controlled  

### **Features:**  
- **Fast Programming:** Byte-by-byte programming  
- **Low Power Consumption:**  
  - Active current: 30mA  
  - Standby current: 100µA  
- **Reliable Data Storage:**  
  - 100K program/erase cycles  
  - 10-year data retention  
- **Hardware & Software Protection:**  
  - VPP pin for write protection  
  - Software command lock/unlock  
- **Compatibility:** Fully compatible with JEDEC standards  

This part is commonly used in embedded systems, BIOS storage, and other applications requiring non-volatile memory.  

(Source: Winbond Datasheet)

Application Scenarios & Design Considerations

256K X 8 CMOS FLASH MEMORY
Partnumber Manufacturer Quantity Availability
W29C020CT-90B,W29C020CT90B W 20 In Stock

Description and Introduction

256K X 8 CMOS FLASH MEMORY The **W29C020CT-90B** is a 2M-bit (256K x 8) CMOS flash memory device manufactured by **Winbond Electronics**. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Memory Size:** 2M-bit (256K x 8)  
- **Supply Voltage:** 5V ± 10%  
- **Access Time:** 90ns  
- **Operating Current:** 30mA (typical)  
- **Standby Current:** 100μA (typical)  
- **Sector Architecture:**  
  - 4 uniform sectors (64K bytes each)  
  - Individual sector erase capability  
- **Endurance:** 100,000 program/erase cycles per sector  
- **Data Retention:** 10 years minimum  
- **Package:** 32-pin PLCC (Plastic Leaded Chip Carrier)  

### **Descriptions:**
- The **W29C020CT-90B** is a 5V-only flash memory device with a byte-wide architecture.  
- It supports **in-system programming** and **erase operations** without requiring additional voltages.  
- Features a **hardware data protection** mechanism to prevent accidental writes.  
- Compatible with **JEDEC-standard** commands for read, program, and erase operations.  

### **Features:**
- **Single 5V Power Supply** for read, program, and erase operations.  
- **Fast Sector Erase Time:** 10ms (typical) per sector.  
- **Automatic Program & Erase Algorithms** with status polling.  
- **Toggle Bit & Data Polling** for operation status detection.  
- **Low Power Consumption** in both active and standby modes.  
- **CMOS Technology** for high performance and reliability.  

This flash memory is commonly used in embedded systems, BIOS storage, and other applications requiring non-volatile memory.  

(Note: For detailed electrical characteristics and timing diagrams, refer to the official Winbond datasheet.)

Application Scenarios & Design Considerations

256K X 8 CMOS FLASH MEMORY

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