.hide-partial { max-height: none; } .show-more { display: none; }

Embedded Processors & Controllers

Embedded Processors & Embedded Controllers are available at Mouser from industry leading manufacturers. Mouser is an authorized distributor for many embedded processor & embedded controller manufacturers including Infineon, Microchip, NXP, Renesas, Silicon Labs, STMicroelectronics, Texas Instruments & many more. Please view our large selection of embedded processors & embedded controllers below.

.catnav-wrapper { height: auto; overflow: visible; } .catalog-nav-tabs ul { white-space: normal; }

Types of Embedded Processors & Controllers

List Images

Results: 74,064

Applied Filters:

Manufacturer

Product Type

Mounting Style

Package / Case

Core

Data Bus Width

Maximum Clock Frequency

Program Memory Size

L1 Cache Instruction Memory

L1 Cache Data Memory

Cache Memory

Data RAM Size

ADC Resolution

Number of I/Os

Minimum Operating Temperature

Maximum Operating Temperature

Qualification

Packaging

Reset All

Search within results

In Stock

Normally Stocked

Active

New Products

RoHS Compliant

.search-refine-wrapper { display: inline-block; min-width: 100%; } .scroll-body { overflow-x: visible; } .search-table-wrapper { overflow: visible; } .hide-partial { max-height: none; } .show-more { display: none; }

Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Product Type	Mounting Style	Package / Case	Core	Data Bus Width	Maximum Clock Frequency	Program Memory Size	L1 Cache Instruction Memory	Data RAM Size	ADC Resolution	Number of I/Os	Minimum Operating Temperature	Maximum Operating Temperature	Qualification	Packaging
8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 128 Basic Logic Elements CLB, PDID, MVIO,10b ADCC, 8b DAC, 2 Analog Comparators PIC18F56Q35-E/PT Microchip Technology 1: $1.97 498In Stock New Product	Mfr. Part # PIC18F56Q35-E/PT Mouser Part # 579-PIC18F56Q35-E/PT New Product	Microchip Technology	8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 128 Basic Logic Elements CLB, PDID, MVIO,10b ADCC, 8b DAC, 2 Analog Comparators Learn More about Microchip Technology microchip pic18f q35 mcus	Datasheet	498In Stock	$1.97 $1.81 $1.64	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	TQFP-48	PIC18	8 bit	64 MHz	64 kB		4 kB	10 bit	43 I/O	- 40 C	+ 125 C		Tray
Digital Signal Processors & Controllers - DSP, DSC 200MHz, 256KB Flash, FuSa-Compliant, Security, HS-Analog, HS-PWMs, Touch dsPIC33AK256MPS206-E/PT Microchip Technology 1: $3.43 315In Stock New Product	Mfr. Part # dsPIC33AK256MPS206-E/PT Mouser Part # 579-PIC33AK256MPS206 New Product	Microchip Technology	Digital Signal Processors & Controllers - DSP, DSC 200MHz, 256KB Flash, FuSa-Compliant, Security, HS-Analog, HS-PWMs, Touch Learn More about Microchip Technology microchip dspic33ak dscs	Datasheet	315In Stock	$3.43 $3.12 $2.83	Min.: 1 Mult.: 1	DSP - Digital Signal Processors & Controllers	SMD/SMT	TQFP-64	dsPIC33A	32-bit	200 MHz	256 kB	2 kB			45 I/O	- 40 C	+ 125 C		Tray
Digital Signal Processors & Controllers - DSP, DSC 200MHz, 512KB Flash, FuSa-Compliant, HS-Analog, HS-PWMs, Touch dsPIC33AK512MC208-E/PT Microchip Technology 1: $3.40 238In Stock New Product	Mfr. Part # dsPIC33AK512MC208-E/PT Mouser Part # 579-SPIC33AK512MC208 New Product	Microchip Technology	Digital Signal Processors & Controllers - DSP, DSC 200MHz, 512KB Flash, FuSa-Compliant, HS-Analog, HS-PWMs, Touch Learn More about Microchip Technology microchip dspic33ak dscs	Datasheet	238In Stock	$3.40 $3.09 $2.81	Min.: 1 Mult.: 1	DSP - Digital Signal Processors & Controllers	SMD/SMT	TQFP-80	dsPIC33A	32-bit	200 MHz	512 kB	2 kB			59 I/O	- 40 C	+ 125 C		Tray
Digital Signal Processors & Controllers - DSP, DSC 200MHz, 256KB Flash, FuSa-Compliant, CAN-FD, HS-Analog, HS-PWMs, Touch dsPIC33AK256MC506-E/M7 Microchip Technology 1: $3.24 280In Stock New Product	Mfr. Part # dsPIC33AK256MC506-E/M7 Mouser Part # 579-33AK256MC506EM7 New Product	Microchip Technology	Digital Signal Processors & Controllers - DSP, DSC 200MHz, 256KB Flash, FuSa-Compliant, CAN-FD, HS-Analog, HS-PWMs, Touch Learn More about Microchip Technology microchip dspic33ak dscs	Datasheet	280In Stock	$3.24 $2.94 $2.67	Min.: 1 Mult.: 1	DSP - Digital Signal Processors & Controllers	SMD/SMT	VQFN-64	dsPIC33A	32-bit	200 MHz	256 kB	2 kB			45 I/O	- 40 C	+ 125 C		Tube
8-bit Microcontrollers - MCU 32KB,20MHz,85C,1.62V,PDID,PTC,ADC,Comp,WDT,USART,SPI,TWI,CCL AVR32LA14-I/ST Microchip Technology 1: $0.49 1,282In Stock New Product	Mfr. Part # AVR32LA14-I/ST Mouser Part # 579-AVR32LA14I/ST New Product	Microchip Technology	8-bit Microcontrollers - MCU 32KB,20MHz,85C,1.62V,PDID,PTC,ADC,Comp,WDT,USART,SPI,TWI,CCL Learn More about Microchip Technology microchip avr la avr32la14 20 28 32 mcus	Datasheet	1,282In Stock	$0.49 $0.488	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	TSSOP-14		8 bit	20 MHz	32 kB		2 kB	10 bit	12 I/O	- 40 C	+ 85 C		Tube
ARM Microcontrollers - MCU CM0+, 64KB, 24MHz, 5V, 12bit ADC, PTC, 2xCMP, DAC, PDID, EVSYS, DMA, CCL, 3xSERCOM, 3xTC, 1xTCC, RTC, WDT, PDID, 125C PIC32CM6408PL10028-E/SS Microchip Technology 1: $0.81 730In Stock New Product	Mfr. Part # PIC32CM6408PL10028-E/SS Mouser Part # 579-CM6408PL10028ESS New Product	Microchip Technology	ARM Microcontrollers - MCU CM0+, 64KB, 24MHz, 5V, 12bit ADC, PTC, 2xCMP, DAC, PDID, EVSYS, DMA, CCL, 3xSERCOM, 3xTC, 1xTCC, RTC, WDT, PDID, 125C Learn More about Microchip Technology microchip pic32cm pl10 arm based mcus	Datasheet	730In Stock	$0.81 $0.808	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	SSOP-28	ARM Cortex M0+	32 bit	24 MHz	64 kB		8 kB	12 bit	23 I/O	- 40 C	+ 125 C		Tube
8-bit Microcontrollers - MCU 14KB Flash, 1KB RAM, CLB, PDID, 10b ADC, 10b DAC, CLC, 2x PWM, 2x CCP, HLT, WWDT, PIC16F13255-I/3LW Microchip Technology 1: $0.87 910In Stock New Product	Mfr. Part # PIC16F13255-I/3LW Mouser Part # 579-PIC16F13255I3LW New Product	Microchip Technology	8-bit Microcontrollers - MCU 14KB Flash, 1KB RAM, CLB, PDID, 10b ADC, 10b DAC, CLC, 2x PWM, 2x CCP, HLT, WWDT, Learn More about Microchip Technology microchip pic16f13254 55 74 75 mcus	Datasheet	910In Stock	$0.87 $0.80 $0.72	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	VQFN-28	RISC	8 bit	32 MHz	14 kB		1 kB	10 bit	25 I/O	- 40 C	+ 85 C		Tube
8-bit Microcontrollers - MCU 28KB Flash, 2KB RAM, CLB, PDID, 10b ADC, 10b DAC, CLC, 2x PWM, 2x CCP, HLT, WWDT, PIC16F13276-E/P Microchip Technology 1: $3.26 250In Stock New Product	Mfr. Part # PIC16F13276-E/P Mouser Part # 579-PIC16F13276-E/P New Product	Microchip Technology	8-bit Microcontrollers - MCU 28KB Flash, 2KB RAM, CLB, PDID, 10b ADC, 10b DAC, CLC, 2x PWM, 2x CCP, HLT, WWDT, Learn More about Microchip Technology microchip pic16f13256 76 mcus	Datasheet	250In Stock	$3.26 $2.99 $2.71	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	PDIP-40	RISC	8 bit	32 MHz	28 kB		2 kB	10 bit	36 I/O	- 40 C	+ 125 C		Tube
8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 128 Basic Logic Elements CLB, PDID, MVIO,10b ADCC, 8b DAC, 2 Analog Comparators PIC18F26Q35-E/3LW Microchip Technology 1: $1.53 546In Stock New Product	Mfr. Part # PIC18F26Q35-E/3LW Mouser Part # 579-PIC18F26Q35E3LW New Product	Microchip Technology	8-bit Microcontrollers - MCU 64KB Flash, 4KB RAM, 128 Basic Logic Elements CLB, PDID, MVIO,10b ADCC, 8b DAC, 2 Analog Comparators Learn More about Microchip Technology microchip pic18f q35 mcus	Datasheet	546In Stock	$1.53 $1.40 $1.27	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	VQFN-28	PIC18	8 bit	64 MHz	64 kB		4 kB	10 bit	24 I/O	- 40 C	+ 125 C		Tube
8-bit Microcontrollers - MCU 16KB Flash, 1KB RAM, 128 Basic Logic Elements CLB, PDID, MVIO,10b ADCC, 8b DAC, 2 Analog Comparators PIC18F44Q35-E/P Microchip Technology 1: $3.71 220In Stock New Product	Mfr. Part # PIC18F44Q35-E/P Mouser Part # 579-PIC18F44Q35-E/P New Product	Microchip Technology	8-bit Microcontrollers - MCU 16KB Flash, 1KB RAM, 128 Basic Logic Elements CLB, PDID, MVIO,10b ADCC, 8b DAC, 2 Analog Comparators Learn More about Microchip Technology microchip pic18f q35 mcus	Datasheet	220In Stock	$3.71 $3.40 $3.08	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	PDIP-40	PIC18	8 bit	64 MHz	16 kB		1 kB	10 bit	35 I/O	- 40 C	+ 125 C		Tube
8-bit Microcontrollers - MCU 32KB Flash, 2KB RAM, 128 Basic Logic Elements CLB, PDID, MVIO,10b ADCC, 8b DAC, 2 Analog Comparators PIC18F45Q35-E/P Microchip Technology 1: $3.82 209In Stock New Product	Mfr. Part # PIC18F45Q35-E/P Mouser Part # 579-PIC18F45Q35-E/P New Product	Microchip Technology	8-bit Microcontrollers - MCU 32KB Flash, 2KB RAM, 128 Basic Logic Elements CLB, PDID, MVIO,10b ADCC, 8b DAC, 2 Analog Comparators Learn More about Microchip Technology microchip pic18f q35 mcus	Datasheet	209In Stock	$3.82 $3.50 $3.17	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	PDIP-40	PIC18	8 bit	64 MHz	32 kB		2 kB	10 bit	35 I/O	- 40 C	+ 125 C		Tube
Digital Signal Processors & Controllers - DSP, DSC 200MHz, 256KB Flash, FuSa-Compliant, Security, CAN-FD, HS-Analog, HS-PWMs, Touch dsPIC33AK256MPS508-E/PT Microchip Technology 1: $3.74 238In Stock New Product	Mfr. Part # dsPIC33AK256MPS508-E/PT Mouser Part # 579-PIC33AK256MPS508 New Product	Microchip Technology	Digital Signal Processors & Controllers - DSP, DSC 200MHz, 256KB Flash, FuSa-Compliant, Security, CAN-FD, HS-Analog, HS-PWMs, Touch Learn More about Microchip Technology microchip dspic33ak dscs	Datasheet	238In Stock	$3.74 $3.39 $3.09	Min.: 1 Mult.: 1	DSP - Digital Signal Processors & Controllers	SMD/SMT	TQFP-80	dsPIC33A	32-bit	200 MHz	256 kB	2 kB			59 I/O	- 40 C	+ 125 C		Tray
Digital Signal Processors & Controllers - DSP, DSC 200MHz, 256KB Flash, FuSa-Compliant, Security, CAN-FD, HS-Analog, HS-PWMs, Touch dsPIC33AK256MPS510-E/PT Microchip Technology 1: $3.94 238In Stock New Product	Mfr. Part # dsPIC33AK256MPS510-E/PT Mouser Part # 579-PIC33AK256MPS510 New Product	Microchip Technology	Digital Signal Processors & Controllers - DSP, DSC 200MHz, 256KB Flash, FuSa-Compliant, Security, CAN-FD, HS-Analog, HS-PWMs, Touch Learn More about Microchip Technology microchip dspic33ak dscs	Datasheet	238In Stock	$3.94 $3.58 $3.25	Min.: 1 Mult.: 1	DSP - Digital Signal Processors & Controllers	SMD/SMT	TQFP-100	dsPIC33A	32-bit	200 MHz	256 kB	2 kB			76 I/O	- 40 C	+ 125 C		Tray
Digital Signal Processors & Controllers - DSP, DSC 200MHz, 256KB Flash, FuSa-Compliant, CAN-FD, HS-Analog, HS-PWMs, Touch dsPIC33AK256MC506-E/PT Microchip Technology 1: $3.18 315In Stock New Product	Mfr. Part # dsPIC33AK256MC506-E/PT Mouser Part # 579-SPIC33AK256MC506 New Product	Microchip Technology	Digital Signal Processors & Controllers - DSP, DSC 200MHz, 256KB Flash, FuSa-Compliant, CAN-FD, HS-Analog, HS-PWMs, Touch Learn More about Microchip Technology microchip dspic33ak dscs	Datasheet	315In Stock	$3.18 $2.89 $2.62	Min.: 1 Mult.: 1	DSP - Digital Signal Processors & Controllers	SMD/SMT	TQFP-64	dsPIC33A	32-bit	200 MHz	256 kB	2 kB			45 I/O	- 40 C	+ 125 C		Tray
ARM Microcontrollers - MCU Mainstream Arm Cortex-M33 MCU, 144 MHz, 512 KB flash, 128 KB RAM, I3C, FDCAN STM32C552VET6 STMicroelectronics 1: $3.99 394In Stock 540Expected 12/29/2026 New Product	Mfr. Part # STM32C552VET6 Mouser Part # 511-STM32C552VET6 New Product	STMicroelectronics	ARM Microcontrollers - MCU Mainstream Arm Cortex-M33 MCU, 144 MHz, 512 KB flash, 128 KB RAM, I3C, FDCAN Learn More about STMicroelectronics st stm32c5 arm core mainstream mcus	Datasheet	394In Stock 540Expected 12/29/2026	$3.99 $2.83 $2.47 $2.19	Min.: 1 Mult.: 1 Max.: 100	ARM Microcontrollers - MCU	SMD/SMT	LQFP-100	ARM Cortex M33	32 bit	144 MHz	512 kB		128 kB	12 bit	86 I/O	- 40 C	+ 85 C		Tray
Microprocessors - MPU SOC RZ/G3SE 17BGA SECURE QUAD(BULK) R9A08G045SE8GBG#AC0 Renesas Electronics 1: $38.49 50In Stock New Product	Mfr. Part # R9A08G045SE8GBG#AC0 Mouser Part # 968-A08G045SE8GBGAC0 New Product	Renesas Electronics	Microprocessors - MPU SOC RZ/G3SE 17BGA SECURE QUAD(BULK) Learn More about Renesas Electronics renesas rz g3se mpus	Datasheet	50In Stock	$38.49 $32.42 $30.96 $27.67 View $27.01 Quote	Min.: 1 Mult.: 1	Microprocessors - MPU		BGA-17												Tray
8-bit Microcontrollers - MCU 32KB,20MHz,85C,1.62V,PDID,PTC,ADC,Comp,WDT,USART,SPI,TWI,CCL AVR32LA28-I/3LW Microchip Technology 1: $0.53 540In Stock 728Expected 12/4/2026 New Product	Mfr. Part # AVR32LA28-I/3LW Mouser Part # 579-AVR32LA28I/3LW New Product	Microchip Technology	8-bit Microcontrollers - MCU 32KB,20MHz,85C,1.62V,PDID,PTC,ADC,Comp,WDT,USART,SPI,TWI,CCL Learn More about Microchip Technology microchip avr la avr32la14 20 28 32 mcus	Datasheet	540In Stock 728Expected 12/4/2026	$0.53 $0.526	Min.: 1 Mult.: 1	8-bit Microcontrollers - MCU	SMD/SMT	VQFNWF-28		8 bit	20 MHz	32 kB		2 kB	10 bit	24 I/O	- 40 C	+ 85 C		Tube
Microprocessors - MPU SOC RZ/G3L 14BGA SECURE QUAD(BULK) R9A08G046L46GBG#AC0 Renesas Electronics 1: $35.33 50In Stock New Product	Mfr. Part # R9A08G046L46GBG#AC0 Mouser Part # 968-A08G046L46GBGAC0 New Product	Renesas Electronics	Microprocessors - MPU SOC RZ/G3L 14BGA SECURE QUAD(BULK) Learn More about Renesas Electronics renesas rz g3l mpus	Datasheet	50In Stock	$35.33 $29.76 $28.42 $25.41 View $24.80 Quote	Min.: 1 Mult.: 1	Microprocessors - MPU		BGA-14												Tray
ARM Microcontrollers - MCU High performance Arm Cortex-M55 MCU 800MHz 4.2MB SRAM Neural-ART accelerator 600 GOPS NeoChrom GPU JPEG Codec H-264 enc STM32N647L0H3Q STMicroelectronics 1: $22.16 2,855In Stock New Product	Mfr. Part # STM32N647L0H3Q Mouser Part # 511-STM32N647L0H3Q New Product	STMicroelectronics	ARM Microcontrollers - MCU High performance Arm Cortex-M55 MCU 800MHz 4.2MB SRAM Neural-ART accelerator 600 GOPS NeoChrom GPU JPEG Codec H-264 enc Learn More about STMicroelectronics stm stm32n6 mcus	Datasheet	2,855In Stock	$22.16 $17.56 $16.66 $15.15 View $14.65 $14.19	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU														Tray
32-bit Microcontrollers - MCU MCU RX700 RXv3e 480MHz MRAM 1M EtherCAT CAN-FD Renesas Electronics R5K574NCD4FB#70 R5K574NCD4FB#70 Renesas Electronics 1: $18.83 60In Stock New Product	Mfr. Part # R5K574NCD4FB#70 Mouser Part # 968-R5K574NCD4FB#70 New Product	Renesas Electronics	32-bit Microcontrollers - MCU MCU RX700 RXv3e 480MHz MRAM 1M EtherCAT CAN-FD	Datasheet	60In Stock	$18.83 $14.30 $13.71 $12.08 View $11.49 $11.11 $10.75 Quote	Min.: 1 Mult.: 1	32-bit Microcontrollers - MCU				32 bit	480 MHz									Tray
ARM Microcontrollers - MCU RP2354A 10pcs RP2354B 10pcs AOTA-B201610S3R3-101-T 20pcs (polarity marked inductor) ABM8-272-T3 20pcs (Abracon crystal) SC2212 Raspberry Pi 1: $25.00 140In Stock New Product	Mfr. Part # SC2212 Mouser Part # 358-SC1933 New Product	Raspberry Pi	ARM Microcontrollers - MCU RP2354A 10pcs RP2354B 10pcs AOTA-B201610S3R3-101-T 20pcs (polarity marked inductor) ABM8-272-T3 20pcs (Abracon crystal) Learn More about Raspberry Pi sc1933 kit	Datasheet	140In Stock	$25.00	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU														Bulk
RF System on a Chip - SoC BG24L, 2.4 GHz, 768kB Flash, 96kB RAM, +10 dBm, +85 C, QFN40 EFR32BG24L010F768IM40-BR Silicon Labs 1: $4.26 5,012In Stock New Product	Mfr. Part # EFR32BG24L010F768IM40-BR Mouser Part # 634-32BG24L010FIM40R New Product	Silicon Labs	RF System on a Chip - SoC BG24L, 2.4 GHz, 768kB Flash, 96kB RAM, +10 dBm, +85 C, QFN40 Learn More about Silicon Labs siliconlabs efr32bg24l wireless gecko socs	Datasheet	5,012In Stock	Cut Tape $4.26 $3.21 $2.95 $2.66 View Reel $2.30 $2.52 $2.50 $2.35 $2.30 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	RF System on a Chip - SoC	SMD/SMT	QFN-40	ARM Cortex M33	32 bit	78 MHz	768 kB		96 kB	12 bit, 16 bit	26 I/O	- 40 C	+ 125 C		Reel, Cut Tape, MouseReel
RF System on a Chip - SoC ATM34 SoC, 4x4 BGA,93balls, 2.5M NVM SR (Small Reel) ATM3405-5YCABV-UR Atmosic Technologies 1: $5.40 525In Stock New Product	Mfr. Part # ATM3405-5YCABV-UR Mouser Part # 952-ATM34055YCABVSR New Product	Atmosic Technologies	RF System on a Chip - SoC ATM34 SoC, 4x4 BGA,93balls, 2.5M NVM SR (Small Reel) Learn More about Atmosic Technologies atm34 e socs	Datasheet	525In Stock	Cut Tape $5.40 $4.11 $3.79 $3.44 Reel $3.12 View $3.27 $3.16 $3.09	Min.: 1 Mult.: 1 : 1,000	RF System on a Chip - SoC	SMD/SMT	BGA-93	ARM Cortex M33F	32 bit	64 MHz			256 kB	16 bit	46 I/O	- 40 C	+ 85 C		Reel, Cut Tape
ARM Microcontrollers - MCU TRAVEO-2 BODY HIGH-END CYT4BBBCEBQ1BZEGS Infineon Technologies 1: $21.17 1,195In Stock	Mfr. Part # CYT4BBBCEBQ1BZEGS Mouser Part # 726-4BBBCEBQ1BZEGS	Infineon Technologies	ARM Microcontrollers - MCU TRAVEO-2 BODY HIGH-END Learn More about Infineon Technologies infineon cyt3bb cyt4bb auto mcus	Datasheet	1,195In Stock	$21.17 $17.32 $16.62 $15.84 View Quote	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU	SMD/SMT	BGA-272	ARM Cortex M0+, ARM Cortex M7	32 bit	100 MHz, 250 MHz	4.06 MB		768 kB	3 x 12 bit	220 I/O	- 40 C	+ 125 C	AEC-Q100	Tray
ARM Microcontrollers - MCU Dual-Core with Full Features NXP Semiconductors MIMXRT1176DVMAB MIMXRT1176DVMAB NXP Semiconductors 1: $23.47 1,510In Stock New Product	Mfr. Part # MIMXRT1176DVMAB Mouser Part # 771-MIMXRT1176DVMAB New Product	NXP Semiconductors	ARM Microcontrollers - MCU Dual-Core with Full Features	Datasheet	1,510In Stock	$23.47 $18.79 $17.62 $16.34 View $15.72 $15.35 Quote	Min.: 1 Mult.: 1	ARM Microcontrollers - MCU														Tray