Microchip Technology MEC1705 Embedded Controller
Microchip Technology MEC1705 Embedded Controller is a highly-configurable, mixed-signal, advanced I/O controller ideal for embedded and industrial computing platforms. The MEC1705 incorporates 32-bit features and an Arm® Cortex®-M4F Microcontroller core with a closely-coupled SRAM for code and data. A secure bootloader is used to download the custom firmware image from the system’s shared SPI Flash device, allowing system designers to customize the device’s behavior.
The MEC1705 may be configured to communicate with the system host through one of three host interfaces: Intel Low Pin Count (LPC), eSPI, or I2C. The MEC1705 Controller is designed to operate as either a stand-alone I/O device or as an EC Base Component of a split-architecture Advanced I/O Controller system which uses BC-Link communication protocol to access up to two BC bus companion components. The BC-Link protocol is peer-to-peer communication between the MEC1705 Embedded Controller and registers located in a companion device.
Features
- Arm® Cortex®-M4F Processor Core
- Complete Arm-Standard Debug Support
- Comprehensive Arm-Standard Trace Support
- Internal Memory: up to 480KB of SRAM
- Enhanced Serial Peripheral Interface (eSPI) - Intel eSPI Specification Compliant
- Supports LPC Bus frequencies of 19MHz to 33MHz
- Four EC-based SMBus 2.0 Host Controllers
- Five independent Hardware Driven PS/2 Ports
- One Quad Serial Peripheral Interface (SPI) Controller
- 18 x 8 Interrupt Capable Multiplexed Keyboard Scan Matrix
- Four Breathing/Blinking LED Interfaces
- Multi-purpose AES Cryptographic Engine: Hardware support for ECB, CTR, CBC, and OFB AES modes
- Cryptographic Hash Engine: Support for SHA-1, SHA-256, SHA-512
- Public Key Cryptographic Engine: Hardware support for RSA and Elliptic Curve public key algorithms and RSA keys length of 1024 or 2048 bits
- True Random Number Generator: 1Kbit FIFO
- Monotonic Counter
- RoHS compliant
Specifications
- Keyboard Scan Matrix: 18x8
- Customer Programmable RAM: Yes
- Host Interface: eSPI, LPC, I2C
- Crypto Engine: Yes
- Code Storage: 480KB (Code + Data)
- Operating Temperature range: -40°C to +85°C
- Deep Sleep S5: Yes
- Fan Tachometer Inputs: 2
- Max Operating Frequency: 48MHz
- 8024 Keyboard Controller: Yes
- Data RAM: 32KB
- GPIO: 148
- Package: 144-WFBGA (SZ)
- LED: 4
- Analog to Digital Converter: 8
- BC Link: 2
- AMD SB-TSI: 1
- ACPI Interfaces: 5
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