The following document contains information on Cypress products. The document has the series name, product name, and ordering part numbering with the prefix MB. However, Cypress will offer these products to new and existing customers with the series name, product name, and ordering part number with the prefix CY. How to Check the Ordering Part Number 1. Go to www.cypress.com/pcn. 2. Enter the keyword (for example, ordering part number) in the SEARCH PCNS field and click Apply. 3. Click the corresponding title from the search results. 4. Download the Affected Parts List file, which has details of all changes For More Information Please contact your local sales office for additional information about Cypress products and solutions. About Cypress Cypress is the leader in advanced embedded system solutions for the world s most innovative automotive, industrial, smart home appliances, consumer electronics and medical products. Cypress microcontrollers, analog ICs, wireless and USB-based connectivity solutions and reliable, high-performance memories help engineers design differentiated products and get them to market first. Cypress is committed to providing customers with the best support and development resources on the planet enabling them to disrupt markets by creating new product categories in record time. To learn more, go to www.cypress.com. MB9A420L Series 32-Bit ARM Cortex -M3 FM3 Microcontroller The MB9A420L Series are highly integrated 32-bit microcontrollers dedicated for embedded controllers with low-power consumption mode and competitive cost. These series are based on the ARM Cortex -M3 Processor with on-chip Flash memory and SRAM, and have peripheral 2 functions such as various timers, ADCs, DACs and Communication Interfaces (CAN, UART, CSIO, I C, LIN). The products which are described in this data sheet are placed into TYPE11 product categories in FM3 Family Peripheral Manual. Features UART 32-bit ARM Cortex -M3 Core Full duplex double buffer Processor version: r2p1 Selection with or without parity supported Up to 40 MHz Frequency Operation Built-in dedicated baud rate generator Integrated Nested Vectored Interrupt Controller (NVIC): 1 NMI (non-maskable interrupt) and External clock available as a serial clock 48 peripheral interrupts and 16 priority levels Various error detection functions available (parity errors, framing errors, and overrun errors) 24-bit System timer (Sys Tick): System timer for OS task management CSIO On-chip Memories Full duplex double buffer Built-in dedicated baud rate generator Flash memory Overrun error detection function available 64 Kbytes LIN Read cycle: 0 wait-cycle LIN protocol Rev.2.1 supported Security function for code protection Full duplex double buffer SRAM Master/Slave mode supported This series contains 4 Kbyte on-chip SRAM memories that is connected to System bus of Cortex-M3 core. LIN break field generation (can be changed to 13-bit to 16-bit length) SRAM1: 4 Kbyte LIN break delimiter generation (can be changed to 1-bit to 4-bit length) CAN Interface (Max one channel) Various error detection functions available (parity errors, Compatible with CAN Specification 2.0A/B framing errors, and overrun errors) Maximum transfer rate: 1 Mbps 2 I C Built-in 32 message buffer Standard-mode (Max 100 kbps) / Fast-mode (Max 400 kbps) Multi-function Serial Interface (Max four channels) supported 4 channels without FIFO (ch.0, ch.1, ch.3, ch.5) Operation mode is selectable from the followings for each channel. UART CSIO LIN 2 I C Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 002-05659 Rev.*B Revised March 13, 2017