FUJITSU SEMICONDUCTOR
DATA SHEET
DS706-00039-1v0-E
32-bit ARM
TM
Cortex
TM
-M3 based Microcontroller
MB9A340NA Series
MB9AF341LA/MA/NA, MB9AF342LA/MA/NA,
MB9AF344LA/MA/NA
DESCRIPTION
The MB9A340NA 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, 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.
Copyright©2012 FUJITSU SEMICONDUCTOR LIMITED All rights reserved
2012.8
MB9A340NA Series
FEATURES
32-bit ARM Cortex-M3 Core
Processor version: r2p1
Up to 40 MHz Frequency Operation
Integrated Nested Vectored Interrupt Controller (NVIC): 1 NMI (non-maskable interrupt) and
48 peripheral interrupts and 16 priority levels
24-bit System timer (Sys Tick): System timer for OS task management
On-chip Memories
[Flash memory]
Dual operation Flash memory
Main area: Up to 256 Kbytes
Work area: 32 Kbytes
Read cycle: 0 wait-cycle
Security function for code protection
[SRAM]
This Series on-chip SRAM is composed of two independent SRAM (SRAM0, SRAM1). SRAM0 is
connected to I-code bus or D-code bus of Cortex-M3 core. SRAM1 is connected to System bus.
SRAM0: Up to 16 Kbytes
SRAM1: Up to 16 Kbytes
External Bus Interface*
Supports SRAM, NOR Flash memory device
Up to 8 chip selects
8/16-bit Data width
Up to 25-bit Address bit
Supports Address/Data multiplex
Supports external RDY function
* : MB9AF341LA, F342LA and F344LA do not support External Bus Interface.
USB Interface
The USB interface is composed of Function and Host.
[USB function]
USB2.0 Full-Speed supported
Max 6 EndPoint supported
EndPoint 0 is control transfer
EndPoint 1, 2 can select Bulk-transfer, Interrupt-transfer or Isochronous-transfer
EndPoint 3 to 5 can select Bulk-transfer or Interrupt-transfer
EndPoint 1 to 5 is comprised of Double Buffers.
[USB host]
USB2.0 Full/Low-speed supported
Bulk-transfer, interrupt-transfer and Isochronous-transfer support
Automatic detection of connected/disconnected USB Device
Automatic processing of the IN/OUT token handshake packet
Max 256-byte packet-length supported
Wake-up function supported
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DS706-00039-1v0-E
MB9A340NA Series
Multi-function Serial Interface (Max 8channels)
4 channels with 16steps×9-bit FIFO (ch.4 to ch.7), 4 channels without FIFO (ch.0 to ch.3)
Operation mode is selectable from the followings for each channel.
UART
CSIO
I
2
C
[UART]
Full-duplex double buffer
Selection with or without parity supported
Built-in dedicated baud rate generator
External clock available as a serial clock
Hardware Flow control* : Automatically control the transmission by CTS/RTS (only ch.4)
Various error detection functions available (parity errors, framing errors, and overrun errors)
* : MB9AF341LA, F342LA and F344LA do not support Hardware Flow control.
[CSIO]
Full-duplex double buffer
Built-in dedicated baud rate generator
Overrun error detection function available
[I
2
C]
Standard mode (Max 100kbps) / High-speed mode (Max 400kbps) supported
DMA Controller (8channels)
The DMA Controller has an independent bus from the CPU, so CPU and DMA Controller can process
simultaneously.
8 independently configured and operated channels
Transfer can be started by software or request from the built-in peripherals
Transfer address area: 32-bit (4 Gbytes)
Transfer mode: Block transfer/Burst transfer/Demand transfer
Transfer data type: byte/half-word/word
Transfer block count: 1 to 16
Number of transfers: 1 to 65536
A/D Converter (Max 24channels)
[12-bit A/D Converter]
Successive Approximation type
Built-in 2units
Conversion time: 2.0μs @ 2.7V to 3.6V
Priority conversion available (priority at 2levels)
Scanning conversion mode
Built-in FIFO for conversion data storage (for SCAN conversion: 16steps, for Priority conversion:
4steps)
Base Timer (Max 8channels)
Operation mode is selectable from the followings for each channel.
16-bit PWM timer
16-bit PPG timer
16/32-bit reload timer
16/32-bit PWC timer
DS706-00039-1v0-E
3
MB9A340NA Series
General-Purpose I/O Port
This series can use its pins as general-purpose I/O ports when they are not used for external bus or
peripherals. Moreover, the port relocate function is built in. It can set which I/O port the peripheral function
can be allocated to.
Capable of pull-up control per pin
Capable of reading pin level directly
Built-in the port relocate function
Up to 83 fast general-purpose I/O Ports@100pin Package
Some ports are 5V tolerant I/O.
See "PIN DESCRIPTION" to confirm the corresponding pins.
Dual Timer (32/16-bit Down Counter)
The Dual Timer consists of two programmable 32/16-bit down counters.
Operation mode is selectable from the followings for each channel.
Free-running
Periodic (=Reload)
One-shot
HDMI-CEC/Remote Control Receiver (Up to 2channels)
HDMI-CEC transmitter
Header block automatic transmission by judging Signal free
Generating status interrupt by detecting Arbitration lost
Generating START, EOM, ACK automatically to output CEC transmission by setting 1 byte data
Generating transmission status interrupt when transmitting 1 block (1 byte data and EOM/ACK)
HDMI-CEC receiver
Automatic ACK reply function available
Line error detection function available
Remote control receiver
4 bytes reception buffer
Repeat code detection function available
Real-time clock (RTC)
The Real-time clock can count Year/Month/Day/Hour/Minute/Second/A day of the week from 01 to 99.
The interrupt function with specifying date and time (Year/Month/Day/Hour/Minute/Second/A day of
the week.) is available. This function is also available by specifying only Year, Month, Day, Hour or
Minute.
Timer interrupt function after set time or each set time.
Capable of rewriting the time with continuing the time count.
Leap year automatic count is available.
Watch Counter
The Watch counter is used for wake up from sleep and timer mode.
Interval timer: up to 64s (Max) @ Sub Clock : 32.768 kHz
External Interrupt Controller Unit
Up to 16 external interrupt input pins
Include one non-maskable interrupt (NMI) input pin
4
DS706-00039-1v0-E
MB9A340NA Series
Watchdog Timer (2channels)
A watchdog timer can generate interrupts or a reset when a time-out value is reached.
This series consists of two different watchdogs, a "Hardware" watchdog and a "Software" watchdog.
The "Hardware" watchdog timer is clocked by the built-in low-speed CR oscillator. Therefore, the
"Hardware" watchdog is active in any low-power consumption modes except RTC, STOP, Deep standby
RTC, Deep standby STOP modes.
CRC (Cyclic Redundancy Check) Accelerator
The CRC accelerator calculates the CRC which has a heavy software processing load, and achieves a
reduction of the integrity check processing load for reception data and storage.
CCITT CRC16 and IEEE-802.3 CRC32 are supported.
CCITT CRC16 Generator Polynomial: 0x1021
IEEE-802.3 CRC32 Generator Polynomial: 0x04C11DB7
Clock and Reset
[Clocks]
Selectable from five clock sources (2 external oscillators, 2 built-in CR oscillators, and Main PLL).
Main Clock
Sub Clock
Built-in high-speed CR Clock
Built-in low-speed CR Clock
Main PLL Clock
: 4 MHz to 48 MHz
: 32.768 kHz
: 4 MHz
: 100 kHz
[Resets]
Reset requests from INITX pin
Power-on reset
Software reset
Watchdog timers reset
Low-voltage detection reset
Clock Super Visor reset
Clock Super Visor (CSV)
Clocks generated by built-in CR oscillators are used to supervise abnormality of the external clocks.
External clock failure (clock stop) is detected, reset is asserted.
External frequency anomaly is detected, interrupt or reset is asserted.
Low-Voltage Detector (LVD)
This Series includes 2-stage monitoring of voltage on the VCC pins. When the voltage falls below the
voltage that has been set, Low-Voltage Detector generates an interrupt or reset.
LVD1: error reporting via interrupt
LVD2: auto-reset operation
DS706-00039-1v0-E
5
Power technology
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