## Electronic Specifications: M93C86-RBN3P The **M93C86-RBN3P** is a high-reliability, 16-Kbit serial EEPROM (Electrically Erasable Programmable Read-Only Memory) manufactured by STMicroelectronics. It is widely used in automotive and industrial applications due to its robustness. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Memory Size** | 16 Kbit (2048 x 8 bits or 1024 x 16 bits) | | **Interface** | MICROWIRE (Serial Peripheral Interface - 3 Wire) | | **Operating Voltage** | 1.8V to 5.5V | | **Clock Frequency** | 2 MHz (@ 4.5V - 5.5V) | | **Package Type** | PDIP8 (Plastic Dual In-line Package, 8 pins) | | **Temperature Range** | -40°C to +125°C (Grade 3) | | **Write Cycles** | 1,000,000 (1 Million) write cycles | | **Data Retention** | 40 Years | --- ### 2. Pin Configuration (PDIP8) The device uses a standard 8-pin layout common to many serial EEPROMs: | Pin Number | Name | Function | | :--- | :--- | :--- | | 1 | **S** | Chip Select (Active High) | | 2 | **C** | Serial Clock | | 3 | **D** | Serial Data Input | | 4 | **Q** | Serial Data Output | | 5 | **Vss** | Ground | | 6 | **ORG** | Organization Select (x8 or x16) | | 7 | **DU** | Don't Use (Internal connection) | | 8 | **Vcc** | Supply Voltage | --- ### 3. Core Functional Features * **User-Selectable Internal Organization:** By setting the **ORG** pin, the memory can be configured as either 2048 words of 8 bits each (ORG to Vss) or 1024 words of 16 bits each (ORG to Vcc). * **Sequential Read:** The device allows reading the entire memory contents sequentially without needing to send new addresses for each word. * **Self-Timed Programming:** The write cycle is internally timed, typically taking **5ms** or less. During this period, the status can be monitored via the Ready/Busy status on the Data Output (Q) pin. * **Low Power Consumption:** It features a standby current as low as **1µA** (at 1.8V), making it ideal for battery-operated devices. --- ### 4. Part Number Decoding (M93C86-RBN3P) Understanding the suffix is critical for procurement and PCB design: * **M93C86**: Basic Part Family (16 Kbit Microwire EEPROM) * **-R**: Operating Voltage Range (1.8V to 5.5V) * **BN**: Package Type (PDIP 8-lead) * **3**: Temperature Range (-40°C to +125°C) * **P**: ECOPACK (RoHS compliant/Lead-free)