Overview
The CAT25640VI-GT3E is a 64-Kb Serial EEPROM device produced by Onsemi. It is internally organized as 8Kx8 bits and features a 64-byte page write buffer. The device supports the Serial Peripheral Interface (SPI) protocol and is enabled through a Chip Select (CS) input. It also includes clock input (SCK), data input (SI), and data output (SO) lines, along with a HOLD input to pause serial communication. The device incorporates both software and hardware write protection, including partial and full array protection.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Supply Voltage Range | 1.8 | 5.5 | V | |
| Clock Frequency (5 V) | 20 | MHz | ||
| Input Low Voltage | −0.5 | 0.3 VCC | V | |
| Input High Voltage | 0.7 VCC | VCC + 0.5 | V | |
| Output Low Voltage (VCC ≥ 2.5 V, IOL = 3.0 mA) | 0.4 | V | ||
| Output High Voltage (VCC ≥ 2.5 V, IOH = −1.6 mA) | VCC − 0.8 | V | ||
| Operating Temperature Range | −40 | 85 | °C | |
| Input Capacitance (CS, SCK, SI, WP, HOLD) | 8 | pF | ||
| Output Capacitance (SO) | 8 | pF |
Key Features
- 20 MHz (5 V) SPI Compatible
- Supports SPI Modes (0,0) and (1,1)
- 64-byte Page Write Buffer
- Self-timed Write Cycle
- Hardware and Software Write Protection
- Block Write Protection
- HOLD Input to Pause Serial Communication
- Power-On Reset (POR) Circuitry
Applications
- Automotive Systems
- Communications Systems
- Computer Systems
- Consumer Systems
- Industrial Systems
Q & A
- What is the storage capacity of the CAT25640VI-GT3E?
The CAT25640VI-GT3E has a storage capacity of 64 Kb, organized as 8Kx8 bits. - What communication protocol does the CAT25640VI-GT3E support?
The device supports the Serial Peripheral Interface (SPI) protocol. - What is the supply voltage range for the CAT25640VI-GT3E?
The supply voltage range is from 1.8 V to 5.5 V. - What is the maximum clock frequency for the CAT25640VI-GT3E at 5 V?
The maximum clock frequency is 20 MHz at 5 V. - Does the CAT25640VI-GT3E have write protection features?
Yes, it features both hardware and software write protection, including partial and full array protection. - How can serial communication be paused with the CAT25640VI-GT3E?
Serial communication can be paused by taking the HOLD input low while SCK is low. - What is the operating temperature range for the CAT25640VI-GT3E?
The operating temperature range is from −40°C to +85°C. - Does the CAT25640VI-GT3E have Power-On Reset (POR) circuitry?
Yes, the device incorporates Power-On Reset (POR) circuitry to protect against incorrect power-up states. - What types of systems can the CAT25640VI-GT3E be used in?
The device can be used in automotive, communications, computer, consumer, and industrial systems. - How does the device handle invalid op-codes during communication?
Any invalid op-code will be ignored, and the serial output pin (SO) will remain in the high impedance state.
