GXE00 256-Bit 1-Wire EEPROM
■The GXE00 256-bit 1-Wire® EEPROM identifies and stores relevant information about the product to which it is associated. This lot or product specific information can be accessed with minimal interface, for example a single port pin of a microcontroller. The GXE00 consists of a factory-lasered registration number that includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit Family Code (14h) plus 256 bits of user-programmable EEPROM and a 64-bit one time programmable application register. The power to read and write the GXE00 is derived entirely from the 1-Wire communication line. Data is transferred serially via the 1-Wire protocol, which requires only a single data lead and a ground return. The 48-bit serial number that is factory-lasered into each GXE00 provides a guaranteed unique identity that allows for absolute traceability. The TO-92 and DFN6 packages provide a compact enclosure that allows standard assembly equipment to handle the device easily for attachment to printed circuit boards or wiring. Typical applications include storage of calibration constants, board identification, and product revision status.
●OVERVIEW
■The block diagram in Figure 1 shows the relationships between the major control and memory sections of the GXE00. The GXE00 has four main data components: 1) 64-bit lasered ROM, 2) 256-bit EEPROM data memory with scratchpad, 3) 64-bit one-time programmable application register with scratchpad and 4) 8-bit status memory. The hierarchical structure of the 1-Wire protocol is shown in Figure 2. The bus master must first provide one of the four ROM Function Commands: 1) Read ROM, 2) Match ROM, 3) Search ROM, 4) Skip ROM. The protocol required for these ROM Function Commands is described in Figure 8. After a ROM Function Command is successfully executed, the memory functions become accessible and the master can provide any one of the four memory function commands. The protocol for these memory function commands is described in Figure 6. All data is read and written least significant bit first.
●FEATURES
■Read Only Memory (EEPROM) plus 64-bit one-time programmable application register
■Unique, factory-lasered and tested 64-bit registration number (8-bit family code + 48-bit serial number + 8-bit CRC tester) assures absolute identity because no two parts are alike
■Built-in multidrop controller ensures compatibility with other MicroLAN products
■EEPROM organized as one page of 32 bytes for random access
■Reduces control, address, data, and power to a single data pin
■Directly connects to a single port pin of a microprocessor and communicates at up to 15.3kbits per second
■8-bit family code specifies GXE00 communication requirements to reader
■Presence detector acknowledges when reader first applies voltage
■Low cost TO-92 or 6-pin DFN surface mount package
■Reads and writes over a wide voltage range of 2.8V to 5.25V from -40°C to +85°
|
GXE00 、 GXE00D 、 GXE00D_T&R 、 GXE00-Bu |
|
|
|
|
|
Datasheet |
|
|
|
|
Please see the document for details |
|
|
|
|
|
|
|
|
6-DFN;3-TO92;DFN |
|
|
English Chinese Chinese and English Japanese |
|
|
July 2022 |
|
|
V1.9 |
|
|
|
|
|
2.1 MB |
- +1 Like
- Add to Favorites
Recommend
All reproduced articles on this site are for the purpose of conveying more information and clearly indicate the source. If media or individuals who do not want to be reproduced can contact us, which will be deleted.
Integrated Circuits
Discrete Components
Connectors & Structural Components
Assembly UnitModules & Accessories
Power Supplies & Power Modules
Electronic Materials
Instrumentation & Test Kit
Electrical Tools & Materials
Mechatronics
Processing & Customization
