Overview
The M34E04-FMC9TG is a 4-Kbit serial EEPROM device manufactured by STMicroelectronics. This device is designed to operate on the SMBus bus and is particularly suited for use in DRAM DIMMs (Dual Inline Memory Modules) with Serial Presence Detect (SPD). It operates within a voltage range of 1.7 V to 3.6 V and supports a maximum transfer rate of 1 MHz in the 2.2 V to 3.6 V range. The M34E04 is organized as two pages of 256 bytes each, totaling 512 bytes of memory, with each page composed of two 128-byte blocks. The device is protocol-compatible with previous 2-Kbit devices like the M34E02 and features software data protection for each 128-byte block.
Key Specifications
| Specification | Value |
|---|---|
| Part Number | M34E04-FMC9TG |
| Manufacturer | STMicroelectronics |
| Interface Type | Serial (I2C) |
| Memory Density | 4 Kbits (512 bytes) |
| Organization | Two pages of 256 bytes each, each page composed of two 128-byte blocks |
| Minimum Operating Supply Voltage | 1.7 V |
| Maximum Operating Supply Voltage | 3.6 V |
| Operating Temperature Range | 0°C to 95°C |
| Maximum Transfer Rate | 1 MHz |
| Write Cycle Time | Byte Write within 5 ms, 16 bytes Page Write within 5 ms |
| Data Retention | More than 200 years |
| Write Cycles | More than 4 million |
| Package Type | 8-lead UFDFPN |
| RoHS Compliance | Yes, Ecopack2® |
Key Features
- Compatible with SMBus serial interface up to 1 MHz transfer rate
- Software data protection for each 128-byte block
- Write protection mechanism using high input voltage VHV on input SA0
- Noise filtering with Schmitt trigger and noise filter on bus inputs
- Enhanced ESD/latch-up protection
- More than 4 million write cycles and more than 200 years of data retention
- RoHS-compliant and halogen-free 8-lead ultra thin fine pitch dual flat no lead package (ECOPACK2®)
Applications
The M34E04-FMC9TG is primarily designed for use in DRAM DIMMs (Dual Inline Memory Modules) with Serial Presence Detect (SPD). It stores configuration information about the DRAM module, such as access speed, size, and organization, which can be kept write-protected in one or more memory blocks. This device is also suitable for other applications requiring serial EEPROM with high reliability and data retention.
Q & A
- What is the memory density of the M34E04-FMC9TG?
The M34E04-FMC9TG has a memory density of 4 Kbits, organized as 512 bytes.
- What is the operating voltage range of the M34E04-FMC9TG?
The device operates within a voltage range of 1.7 V to 3.6 V.
- What is the maximum transfer rate of the M34E04-FMC9TG?
The maximum transfer rate is 1 MHz in the 2.2 V to 3.6 V voltage range.
- How is data protection implemented in the M34E04-FMC9TG?
Data protection is implemented through software mechanisms and a high input voltage VHV on input SA0, allowing selective locking of 128-byte blocks.
- What is the operating temperature range of the M34E04-FMC9TG?
The operating temperature range is from 0°C to 95°C.
- Is the M34E04-FMC9TG RoHS-compliant?
Yes, the device is RoHS-compliant and halogen-free, packaged in an ECOPACK2® 8-lead UFDFPN package.
- What is the data retention period of the M34E04-FMC9TG?
The data retention period is more than 200 years.
- How many write cycles can the M34E04-FMC9TG endure?
The device can endure more than 4 million write cycles.
- What type of interface does the M34E04-FMC9TG use?
The device uses a Serial (I2C) interface.
- What is the typical write cycle time for the M34E04-FMC9TG?
The write cycle time is within 5 ms for both byte and 16-byte page writes.
- Is the M34E04-FMC9TG compatible with previous generation devices?
Yes, it is protocol-compatible with previous 2-Kbit devices like the M34E02.
