RZ/A1LC is the most cost-effective part in the RZ/A1 family with an Arm® Cortex®-A9 core running at 400MHz and 2MB of on-chip SRAM to support frame-buffers on-chip.


With 2MB on-chip SRAM and a 400MHz Arm® Cortex®-A9 core, the RZ/A1LC is a great replacement for MCU designs that are trying to achieve MPU levels of performance. RZ/A1LC enables very compact embedded designs without the need to worry about memory procurement and memory EOL. Enabled for support with Linux, RTOS or Bare-metal, this is the ideal device for designing Intelligent IoT End Point devices with compactness and high performance. Supported in a 176 pin BGA package with SDRAM interface to expand up to 128MB of external memory.

Get Started Using RZ/A1 MPUs


Key Features:

Item RZ/A1LC 
Part name / use / package  176-pin  R7S721034VCBG 
Industry usage etc.
176-pin BGA (8 mm × 8 mm)  0.5-mm pitch
Power supply voltage  3.3 V/1.18 V 
Maximum operating frequency  400 MHz 
CPU core  Arm® Cortex®-A9 (with Jazelle® and NEON™) 
On-chip RAM  Large-capacity memory: 2 MB 
(For video display/work area; 128 KB are shared with data retention) 
Cache memory 
Primary cache memory: 64 KB (separated 32K instruction/32K data, TLB128 entry) Secondary cache memory: 128 KB (with CoreLink™ Level 2 Cache Controller L2C-310)
External memory  Bus clock: up to 66.67 MHz 
Direct connection to SRAM, byte select SRAM, SDRAM, and burst ROM (clock synchronous/clock asynchronous) using bus state controller.  Address/data multiplexer I/O (MPX) interface supported.
Address space: 64 MB × 6 
Data bus width: external 8/16/32 bits 
Graphics functions  Video display controller (1 channel of video input and 1 channel of panel output) 
Capture engine unit (CMOS camera interface) 
Audio  SCUX (with built-in asynchronous sampling rate conversion, digital volume & mute, and mixer function) 
Serial sound interface × 4 channels 
Renesas SPDIF interface 
Timers  Multifunction 16-bit timer (MTU2) × 5 channels 
32-bit OS timer × 2 channels 
Watchdog timer 
Real-Time Clock 
Connectivity functions  USB 2.0 host/function module × 2 channels (host or function selectable) 
SD host interface × 2 channels (must obtain SD card license) 
MMC host interface 
Ethernet controller (10 Mbps/100 Mbps transfer, IEEE802.3 PHY interface MII) 
SPI multi-I/O bus controller x 1 channel (up to 2 serial flash memory connectable to 1 channel, direct execution from CPU supported)
Serial communication interface with 16-stage FIFO (SCIF) × 5 channels (asynchronous and clock synchronous serial communication possible) 
Serial communication interface × 2 channels (smart card interface, IrDA 1.0) 
Renesas serial peripheral interface × 3 channels 
I2C bus interface x 4 channel 
Controller area network (CAN) × 2 channels 
System analog functions  Clock pulse generator (CPG): built-in PLL, maximum 32 times multiplication, built-in SSCG circuit 
Direct memory access controller × 16 channels 
Interrupt controller (with Arm® Generic Interrupt Controller [PL390])
A/D converter (12-bit resolution) × 8 channels 
Debugging interface 
CoreSight™ architecture 
JTAG standard pin layout
Boot modes  Boot mode 0: Boot from memory connected to CS0 space (16-bit bus) 
Boot mode 1: Boot from serial flash memory 
Boot mode 2: Boot from built-in NAND flash memory of SD controller 
Boot mode 3: Boot from built-in NAND flash memory of MMC controller 
Power-down modes  Sleep mode 
Software standby mode 
Deep standby mode 
Module standby mode 

Pin Count / Memory Size Lineup:




Block Diagram:


*Arm, Cortex, CoreLink, and CoreSight are registered trademarks or trademarks of Arm Limited.

CAN (Controller Area Network): An automotive network specification developed by Robert Bosch GmbH of Germany.

All other names of products or services mentioned here are trademarks or registered trademarks of their respective owners.

You can find an explanation of orderable part numbers here.


Resources for Software and Hardware

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Hardware Design Support

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Oscillation circuit characteristics

Please search for your resonator on its manufacturer's site linked below. If you require optimal oscillation circuit constants for your particular system, please ask the manufacturer of the oscillator.

For main clock resonators:
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Murata Manufacturing: For IC Manufacturer, select Renesas Electronics, and enter "R7S72103" into the IC Part Number search box.

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