The AC servo system, used in machine tools, industrial robots and a variety of other manufacturing machinery, precisely controls the rotor position, rotation direction, rotation speed, and torque of servo motors. Features such as fast calculation, the ability to generate and output multiple waveforms, and feedback control are necessary to achieve fast response to changes in load, improved stopping accuracy and minimal vibration. Also, the AC servo system requires communication functions (industrial network support) for advanced motion control instructions, remote operation and synchronous processing.

To meet these needs, Renesas offers an extensive product lineup that includes the RZ and RX families of microprocessors (MPUs) and microcontrollers (MCUs). The RZ/T1 is a microprocessor that is ideal for AC servo control applications, combining fast real-time processing performance with extensive peripheral functions such as multifunction motor control timer, A/D converter, encoder interface, and R-IN Engine. The RX Family of 32-bit MCUs offers a wide range of products. And, an array of analog and power devices are also available.

AC Servo Block Diagram

Related Products

Microcontrollers and Microprocessors

Semiconductor Device Recommended Products Features
Control MCU RZ/T1 Operating frequency: 600MHz/450MHz/300MHz
Operating voltage: 3.3V (I/O), 1.2V (Core)
On-chip memory (Max.): Tightly-coupled memory 512KB + 32KB, extended RAM: 1MB
Tightly-coupled memory for fast real-time control
R-IN Engine for fast, power-efficient communication
Encoder interface to accommodate external FPGA functions
RX72M Operating frequency: 240MHz
Operating voltage: 3.3V
On-chip memory (Max.): 4MB Flash, 1MB RAM, 32KB Data Flash
Motor control and the EtherCAT communication with 1 chip.
RX72N Operating frequency (MHz): 240
Operating voltage (V): 2.7 to 3.6
On-chip memory (max.):4MB Flash, 1MB RAM, 32KB Data Flash
Real-time control and networking of equipment are realized with a single chip with 4MB flash memory capable of read operation at 120MHz, 1MB of SRAM and 182 general-purpose I/O ports.
RX72T Operating frequency: 200MHz
Operating voltage: 2.7V to 5.5V
On-chip memory (Max.): 1MB Flash, 128KB RAM, 32KB Data Flash
High-performance edition of RX66T: 200MHz operation, RXv3 register bank save function, arithmetic unit for trigonometric functions
RX66T Operating frequency: 160MHz
Operating voltage: 2.7V to 5.5V
On-chip memory (Max.): 512KB Flash, 128KB RAM, 32KB Data Flash
High-performance RXv3 core and various functions for motor control
RA6T1 Operating frequency (MHz): 120
Operating voltage (V): 2.7 to 3.6
On-chip memory (max.):512KB Flash, 64KB RAM, 8KB Data Flash
Arm Cortex-M4 core and various function for motor control
Display MCU RX651, RX65N Operating frequency: 120MHz
Operating voltage: 3.3V
On-chip memory (Max.): 1MB Flash, 256KB RAM
Provides high performance and low power consumption. To enhance connectivity and encryption functions, it is possible to be delivered for various needs.
RA6M3 Operating frequency (MHz): 120
Operating voltage (V): 2.7 to 3.6
On-chip memory (max.): 2MB Flash, 640KB RAM, 64KB Data Flash
Arm Cortex-M4 core and offers TFT controller with 2D accelerator and JPEG decoder.
Flexible Software Package (FSP), built on FreeRTOS is expandable to use other RTOSes and middleware.
RX113 Operating frequency: 32MHz
Operating voltage: 3.3V
On-chip memory (Max.): 512KB Flash, 64KB RAM, 8KB Data Flash
Ability to implement a variety of user interfaces using capacitive touch sensing and a segment LCD controller

Memory

Semiconductor Device Recommended Products Features
SRAM RMLV0408E Series
RMLV0416E Series
Memory size: 4Mb
Access time (Max.): 45ns
Standby current (Typ.): 0.4μA
Renesas’ original memory cell technology is more than 500 times as resistant to software errors as full CMOS memory cells, providing high reliability for the industrial market
RMLV0808B Series
RMLV0816B Series
Memory size: 8Mb
Access time (Max.): 45ns
Standby current (Typ.): 0.4μA
Renesas’ original memory cell technology is more than 500 times as resistant to software errors as full CMOS memory cells, providing high reliability for the industrial market
RMLV1616A Series Memory size: 16Mb
Access time (Max.): 55ns
Standby current (Typ.): 0.5μA
Renesas’ original memory cell technology is more than 500 times as resistant to software errors as full CMOS memory cells, providing high reliability for the industrial market
RMWV3216A Series Memory size: 32Mb
Access time (Max.): 55ns
Standby current (Typ.): 1.0μA
Renesas’ original memory cell technology is more than 500 times as resistant to software errors as full CMOS memory cells, providing high reliability for the industrial market
RMWV6416A Series Memory size: 64Mb
Access time (Max.): 55ns
Standby current (Typ.): 1.2μA
Renesas's original memory cell technology is more than 500 times as resistant to software errors as full CMOS memory cells, providing the high reliability for the industrial market.

Analog and Power Devices

Semiconductor Device Recommended Products Features
DC/DC RAA23015x Input voltage range: 7V to 28V
Output voltage: 0.8V to 6V
Max. output current: 3A
Auto PFM (light load, high efficiency) mode
Simplify power supply design and shorten turnaround time (TAT) using kits with Renesas MCUs
RAA23023x Input voltage range: 4.5V to 16V
Output voltage: 0.8V to 6V
Max. output current: 3A
Auto PFM (light load, high efficiency) mode
Dual-channel DC/DC
Simplify power supply design and shorten TAT using kits with Renesas MCUs
RAA212422 Main specification: Dual synchronous rectification DC/DC regulator
 CH1: Vin = 3 to 40V, 1.1A output
 CH2: Vin = 2.7 to 5.5V, 1.5A output
Compact package: 3mm x 6mm TDFN
Simplyfy power supply design and shortening TAT in kits with Renesas microcontrollers.
Isolation Amplifier PS8352A
PS9352A
1% precision, analog output, SDIP package
1% precision, digital output, SDIP package
Support for high temperature operation up to 110 °C
IGBT/IPM Drive Photocoupler PS9402/PS9031
PS9009/PS9905
IGBT protection circuit
2.5A output small package IPM drive
690V insolation
Ability to select from a wide range of functions to match the IGBTs used
High-Speed Communication Photocoupler
Tr-output Photocoupler
PS9001 10Mbps
compact
high voltage tolerance
690V insolation compact
high temperature tolerance
PS8902/PS9924
PS2381