The following document contains information on Cypress products. Although the document is marked
with the name “Spansion”, the company that originally developed the specification, Cypress will
continue to offer these products to new and existing customers.
Continuity of Specifications
There is no change to this document as a result of offering the device as a Cypress product. Any
changes that have been made are the result of normal document improvements and are noted in the
document history page, where supported. Future revisions will occur when appropriate, and changes
will be noted in a document history page.
Continuity of Ordering Part Numbers
Cypress continues to support existing part numbers. To order these products, please use only the
Ordering Part Numbers listed in this document.
For More Information
Please contact your local sales office for additional information about Cypress products and solutions.
About Cypress
Cypress (NASDAQ: CY) delivers high-performance, high-quality solutions at the heart of today’s most
advanced embedded systems, from automotive, industrial and networking platforms to highly
interactive consumer and mobile devices. With a broad, differentiated product portfolio that includes
®
NOR flash memories, F-RAM™ and SRAM, Traveo™ microcontrollers, the industry’s only PSoC
®
programmable system-on-chip solutions, analog and PMIC Power Management ICs, CapSense
®
capacitive touch-sensing controllers, and Wireless BLE Bluetooth Low-Energy and USB connectivity
solutions, Cypress is committed to providing its customers worldwide with consistent innovation, best-
in-class support and exceptional system value.
MB9AB40NB Series
32-bit ARM
®
Cortex
®
-M3 based Microcontroller
MB9AFB41LB/MB/NB, MB9AFB42LB/MB/NB,
MB9AFB44LB/MB/NB
Data Sheet (Full Production)
Notice to Readers:
This document states the current technical specifications regarding the Spansion
product(s) described herein. Spansion Inc. deems the products to have been in sufficient production
volume such that subsequent versions of this document are not expected to change. However,
typographical or specification corrections, or modifications to the valid combinations offered may occur.
Publication Number MB9AB40NB_DS706-00034
Revision 4.0
Issue Date June 10, 2015
D a t a S h e e t
Notice On Data Sheet Designations
Spansion Inc. issues data sheets with Advance Information or Preliminary designations to advise readers
of product information or intended specifications throughout the product life cycle, including development,
qualification, initial production, and full production. In all cases, however, readers are encouraged to
verify that they have the latest information before finalizing their design. The following descriptions of
Spansion data sheet designations are presented here to highlight their presence and definitions.
Advance Information
The Advance Information designation indicates that Spansion Inc. is developing one or more specific
products, but has not committed any design to production. Information presented in a document with this
designation is likely to change, and in some cases, development on the product may discontinue.
Spansion Inc. therefore places the following conditions upon Advance Information content:
“This document contains information on one or more products under development at Spansion
Inc. The information is intended to help you evaluate this product. Do not design in this product
without contacting the factory. Spansion Inc. reserves the right to change or discontinue work on
this proposed product without notice.”
Preliminary
The Preliminary designation indicates that the product development has progressed such that a
commitment to production has taken place. This designation covers several aspects of the product life
cycle, including product qualification, initial production, and the subsequent phases in the manufacturing
process that occur before full production is achieved. Changes to the technical specifications presented
in a Preliminary document should be expected while keeping these aspects of production under
consideration. Spansion places the following conditions upon Preliminary content:
“This document states the current technical specifications regarding the Spansion product(s)
described herein. The Preliminary status of this document indicates that product qualification
has been completed, and that initial production has begun. Due to the phases of the
manufacturing process that require maintaining efficiency and quality, this document may be
revised by subsequent versions or modifications due to changes in technical specifications.”
Combination
Some data sheets contain a combination of products with different designations (Advance Information,
Preliminary, or Full Production). This type of document distinguishes these products and their
designations wherever necessary, typically on the first page, the ordering information page, and pages
with the DC Characteristics table and the AC Erase and Program table (in the table notes). The
disclaimer on the first page refers the reader to the notice on this page.
Full Production (No Designation on Document)
When a product has been in production for a period of time such that no changes or only nominal
changes are expected, the Preliminary designation is removed from the data sheet. Nominal changes
may include those affecting the number of ordering part numbers available, such as the addition or
deletion of a speed option, temperature range, package type, or VIO range. Changes may also include
those needed to clarify a description or to correct a typographical error or incorrect specification.
Spansion Inc. applies the following conditions to documents in this category:
“This document states the current technical specifications regarding the Spansion product(s)
described herein. Spansion Inc. deems the products to have been in sufficient production
volume such that subsequent versions of this document are not expected to change. However,
typographical or specification corrections, or modifications to the valid combinations offered may
occur.”
Questions regarding these document designations may be directed to your local sales office.
MB9AB40NB_DS706-00034-4v0-E, June 10, 2015
MB9AB40NB Series
32-bit ARM
®
Cortex
®
-M3 based Microcontroller
MB9AFB41LB/MB/NB, MB9AFB42LB/MB/NB,
MB9AFB44LB/MB/NB
Data Sheet (Full Production)
Description
The MB9AB40NB 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 functions such as various timers, ADCs, LCDC and Communication Interfaces (USB, UART,
CSIO, I
2
C).
The products which are described in this data sheet are placed into TYPE6 product categories in FM3
Family Peripheral Manual.
Note: ARM and Cortex are the trademarks of ARM Limited in the EU and other countries.
Publication Number MB9AB40NB_DS706-00034
Revision 4.0
Issue Date June 10, 2015
This document states the current technical specifications regarding the Spansion product(s) described herein. Spansion Inc. deems the products to have been in sufficient
production volume such that subsequent versions of this document are not expected to change. However, typographical or specification corrections, or modifications to the
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