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Silicon Labs Microcontrollers - MCU

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (JPY) Filter the results in the table by unit price based on your quantity.	Qty.	Mounting Style	Package / Case	Core	Data Bus Width	Maximum Clock Frequency	Program Memory Size	Data RAM Size	ADC Resolution	Number of I/Os	Supply Voltage - Min	Supply Voltage - Max	Maximum Operating Temperature	Qualification	Packaging
ARM Microcontrollers - MCU ARM Cortex-M4 32-bit 72 MHz 2048 kB USB LCD MCU EFM32GG11B820F2048GL192-B Silicon Labs 1: ¥3,569.5 564In Stock 1,300Expected 12/25/2026 NRND	Mfr. Part # EFM32GG11B820F2048GL192-B Mouser Part # 634-B820F2048GL192-B NRND	Silicon Labs	ARM Microcontrollers - MCU ARM Cortex-M4 32-bit 72 MHz 2048 kB USB LCD MCU Learn More about Silicon Labs efm32gg11 mcus	Datasheet	564In Stock 1,300Expected 12/25/2026	¥3,569.5 ¥2,850.3 ¥2,644.3 ¥2,498.1 View ¥2,395.2 ¥2,355.3 Quote	Min.: 1 Mult.: 1	SMD/SMT	BGA-192	ARM Cortex M4	32 bit	72 MHz	2.05 MB	512 kB	12 bit	144 I/O	1.8 V	3.8 V	+ 85 C		Tray
8-bit Microcontrollers - MCU 8KB,24ADC,28Pin MCU C8051F351-GM Silicon Labs 1: ¥2,664.2 978In Stock NRND	Mfr. Part # C8051F351-GM Mouser Part # 634-C8051F351-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8KB,24ADC,28Pin MCU	Datasheet	978In Stock	¥2,664.2 ¥2,086.2 ¥1,936.7 ¥1,783.9 View ¥1,767.3 ¥1,656 ¥1,626.1 Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-28	8051	8 bit	50 MHz	8 kB	768 B	24 bit	17 I/O	2.7 V	3.6 V	+ 85 C		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB 8-bit MCU C8051F390-A-GM Silicon Labs 1: ¥725.9 997In Stock NRND	Mfr. Part # C8051F390-A-GM Mouser Part # 634-C8051F390-A-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB 8-bit MCU Learn More about Silicon Labs siliconlabs c8051f37x	Datasheet	997In Stock	¥725.9 ¥548.1 ¥503.3 ¥453.5 View ¥430.2 ¥428.5 ¥402 ¥392	Min.: 1 Mult.: 1	SMD/SMT	QFN-24	8051	8 bit	50 MHz	16 kB	1 kB	10 bit	21 I/O	1.8 V	3.6 V	+ 105 C		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V CAN LIN 8-bit MCU C8051F502-IM Silicon Labs 1: ¥1,945 548In Stock NRND	Mfr. Part # C8051F502-IM Mouser Part # 634-C8051F502-IM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 5 V CAN LIN 8-bit MCU	Datasheet	548In Stock	¥1,945 ¥1,559.7 ¥1,405.2 ¥1,315.5 View ¥1,279 ¥1,229.1 ¥1,214.2 Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-32	8051	8 bit	50 MHz	64 kB	4.25 kB	12 bit	25 I/O	1.8 V	5.25 V	+ 125 C	AEC-Q100	Tube
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V CAN LIN 8-bit MCU C8051F550-IM Silicon Labs 1: ¥1,536.4 1,919In Stock NRND	Mfr. Part # C8051F550-IM Mouser Part # 634-C8051F550-IM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V CAN LIN 8-bit MCU	Datasheet	1,919In Stock	¥1,536.4 ¥1,190.9 ¥1,104.6 ¥1,008.2 View ¥963.4 ¥935.1 ¥910.2 ¥863.7	Min.: 1 Mult.: 1	SMD/SMT	QFN-24	8051	8 bit	50 MHz	32 kB	2.25 kB	12 bit	18 I/O	1.8 V	5.25 V	+ 125 C	AEC-Q100	Tube
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V 8-bit MCU C8051F553-IM Silicon Labs 1: ¥1,440.1 Non-Stocked Lead-Time 12 Weeks NRND	Mfr. Part # C8051F553-IM Mouser Part # 634-C8051F553-IM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 5 V 8-bit MCU	Datasheet	Non-Stocked Lead-Time 12 Weeks	¥1,440.1 ¥1,194.3 ¥1,014.9 ¥971.7 View ¥916.9 ¥780.7 ¥760.7	Min.: 1 Mult.: 1	SMD/SMT	QFN-24	8051	8 bit	50 MHz	32 kB	2.25 kB	12 bit	18 I/O	1.8 V	5.25 V	+ 125 C	AEC-Q100	Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16I-C-QFN20 Silicon Labs 1: ¥290.7 3,229In Stock	Mfr. Part # EFM8BB21F16I-C-QFN20 Mouser Part # 634-8BB21F16I-CQFN20	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	3,229In Stock	¥290.7 ¥245.8 ¥215.9 ¥201 View ¥196 ¥169.4 ¥143.2 ¥134	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	CIP-51 8051	8 bit	50 MHz	16 kB	2.3 kB	12 bit	16 I/O	2.2 V	3.6 V	+ 125 C		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F8G-A-CSP16R Silicon Labs 1: ¥330.5 4,899In Stock 7,500On Order	Mfr. Part # EFM8SB10F8G-A-CSP16R Mouser Part # 634-8SB10F8GA-CSP16R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU	Datasheet	4,899In Stock 7,500On Order	Cut Tape ¥330.5 ¥244.2 ¥222.6 ¥197.7 Reel ¥169.4 View ¥186 ¥179.4 ¥172.7 ¥164.1 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	CSP-16	CIP-51 8051	8 bit	25 MHz	8 kB	256 B	12 bit	13 I/O	3.6 V	2.2 V	+ 85 C		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB 8-bit MCU C8051F311-GMR Silicon Labs 1: ¥2,053 355In Stock 3,000Expected 11/27/2026	Mfr. Part # C8051F311-GMR Mouser Part # 634-C8051F311-GMR	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB 8-bit MCU	Datasheet	355In Stock 3,000Expected 11/27/2026	Cut Tape ¥2,053 ¥1,636.1 ¥1,481.6 ¥1,385.3 View Reel ¥1,207.5 ¥1,378.6 ¥1,284 ¥1,244.1 ¥1,207.5 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-28	8051	8 bit	25 MHz	16 kB	1.25 kB	10 bit	25 I/O	2.7 V	3.6 V	+ 85 C		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64G-D-QFN24R Silicon Labs 1: ¥609.6 2,120In Stock	Mfr. Part # EFM8BB31F64G-D-QFN24R Mouser Part # 634-EF8BB31F64GDF24R	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	2,120In Stock	Cut Tape ¥609.6 ¥411.9 ¥382 ¥332.2 Reel ¥257.5 View ¥310.6 ¥272.4 ¥257.5 ¥219.3 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-24	CIP-51 8051	8 bit	50 MHz	64 kB	4.35 kB	10 bit, 12 bit	20 I/O	2.2 V	3.6 V	+ 85 C		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64G-D-QFN24 Silicon Labs 1: ¥420.2 5,887In Stock	Mfr. Part # EFM8BB31F64G-D-QFN24 Mouser Part # 634-EF8BB31F64GDQF24	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	5,887In Stock	¥420.2 ¥353.8 ¥308.9 ¥289 View ¥259.1 ¥240.8 ¥222.6 ¥214.3	Min.: 1 Mult.: 1	SMD/SMT	QFN-24	CIP-51 8051	8 bit	50 MHz	64 kB	4.35 kB	10 bit, 12 bit	20 I/O	2.2 V	3.6 V	+ 85 C		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64I-D-4QFN24R Silicon Labs 1: ¥473.4 993In Stock 1,500Expected 11/30/2026	Mfr. Part # EFM8BB31F64I-D-4QFN24R Mouser Part # 634-EF8BB31F64ID424R	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	993In Stock 1,500Expected 11/30/2026	Cut Tape ¥473.4 ¥352.1 ¥322.2 ¥289 Reel ¥260.8 View ¥274.1 ¥267.4 ¥259.1 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-24	CIP-51 8051	8 bit	50 MHz	64 kB	4.35 kB	10 bit, 12 bit	20 I/O	2.2 V	3.6 V	+ 125 C		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64I-D-4QFN24 Silicon Labs 1: ¥498.3 2,758In Stock	Mfr. Part # EFM8BB31F64I-D-4QFN24 Mouser Part # 634-EF8BB31F64ID4F24	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	2,758In Stock	¥498.3 ¥372.1 ¥338.8 ¥304 View ¥287.4 ¥280.7 ¥269.1 ¥257.5 ¥254.1	Min.: 1 Mult.: 1	SMD/SMT	QFN-24	CIP-51 8051	8 bit	50 MHz	64 kB	4.35 kB	10 bit, 12 bit	20 I/O	2.2 V	3.6 V	+ 125 C		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64I-D-QFN32R Silicon Labs 1: ¥508.3 2,500In Stock	Mfr. Part # EFM8BB31F64I-D-QFN32R Mouser Part # 634-EF8BB31F64IDN32R	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	2,500In Stock	Cut Tape ¥508.3 ¥378.7 ¥345.5 ¥310.6 Reel ¥264.1 View ¥292.3 ¥285.7 ¥272.4 ¥259.1	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-32	CIP-51 8051	8 bit	50 MHz	64 kB	4.35 kB	10 bit, 12 bit	29 I/O	2.2 V	3.6 V	+ 125 C		Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU EFM8BB31F64I-D-QFN32 Silicon Labs 1: ¥509.9 1,517In Stock	Mfr. Part # EFM8BB31F64I-D-QFN32 Mouser Part # 634-EF8BB31F64IDQN32	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	1,517In Stock	¥509.9 ¥380.4 ¥347.1 ¥312.3 View ¥294 ¥287.4 ¥274.1 ¥264.1 ¥259.1	Min.: 1 Mult.: 1	SMD/SMT	QFN-32	CIP-51 8051	8 bit	50 MHz	64 kB	4.35 kB	10 bit, 12 bit	29 I/O	2.2 V	3.6 V	+ 125 C		Tray
ARM Microcontrollers - MCU ARM Cortex-M0+ 48 MHz 128 kB flash 32 kB RAM MCU EFM32TG11B120F128GQ48-BR Silicon Labs 1: ¥930.2 860In Stock	Mfr. Part # EFM32TG11B120F128GQ48-BR Mouser Part # 634-EFM32TG128GQ48BR	Silicon Labs	ARM Microcontrollers - MCU ARM Cortex-M0+ 48 MHz 128 kB flash 32 kB RAM MCU Learn More about Silicon Labs energymicroefm32tg	Datasheet	860In Stock	Cut Tape ¥930.2 ¥707.6 ¥652.8 ¥591.3 Reel ¥538.2 View ¥563.1 ¥544.8 ¥531.5	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	QFP-48	ARM Cortex M0+	32 bit	48 MHz	128 kB	32 kB	12 bit	37 I/O	1.8 V	3.8 V	+ 85 C		Reel, Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU EFM8BB51F16I-C-QFN20R Silicon Labs 1: ¥184.4 12,398In Stock	Mfr. Part # EFM8BB51F16I-C-QFN20R Mouser Part # 634-EFM851F16IQFN20R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	12,398In Stock	Cut Tape ¥184.4 ¥157.1 ¥137.9 ¥126.6 Reel ¥89.4 View ¥117.8 ¥107.8 ¥98.7 ¥75.7	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-20				16 kB	1.28 kB		16 I/O	1.8 V	5.5 V	+ 85 C		Reel, Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU EFM8BB52F32G-C-QFN32R Silicon Labs 1: ¥184.4 4,000In Stock	Mfr. Part # EFM8BB52F32G-C-QFN32R Mouser Part # 634-EFM852F32GQFN32R	Silicon Labs	8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU Learn More about Silicon Labs silabs efm8bb51 efm8bb52 busy bee mcus	Datasheet	4,000In Stock	Cut Tape ¥184.4 ¥133.2 ¥119.9 ¥105.5 Reel ¥87.4 View ¥98.7 ¥94.3 ¥91.4 ¥85.2	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-32				16 kB	1.28 kB		16 I/O	1.8 V	5.5 V	+ 85 C		Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU EFM8BB21F16A-C-QFN20 Silicon Labs 1: ¥558.1 2,983In Stock	Mfr. Part # EFM8BB21F16A-C-QFN20 Mouser Part # 634-EFM8BB21F16FN20	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU Learn More about Silicon Labs siliconlabs efm8 busy bee	Datasheet	2,983In Stock	¥558.1 ¥440.2 ¥393.7 ¥360.4 View ¥347.1 ¥328.9 ¥320.6 ¥313.9 ¥305.6	Min.: 1 Mult.: 1	SMD/SMT	QFN-20	CIP-51 8051	8 bit	50 MHz	16 kB	2.25 kB	12 bit	16 I/O	2.2 V	3.6 V	+ 125 C	AEC-Q100	Tube
ARM Microcontrollers - MCU ARM Cortex-M0+ 32-bit 25 MHz 64 kB MCU EFM32HG210F64G-C-QFN32R Silicon Labs 1: ¥847.1 745In Stock	Mfr. Part # EFM32HG210F64G-C-QFN32R Mouser Part # 634-HG210F64GCQFN32R	Silicon Labs	ARM Microcontrollers - MCU ARM Cortex-M0+ 32-bit 25 MHz 64 kB MCU Learn More about Silicon Labs efm32 happy gecko mcus	Datasheet	745In Stock	Cut Tape ¥847.1 ¥642.8 ¥586.3 ¥529.9 ¥511.6 Reel ¥433.5	Min.: 1 Mult.: 1 : 3,000	SMD/SMT	QFN-32	ARM Cortex M0+	32 bit	25 MHz	64 kB	8 kB	12 bit	22 I/O	1.98 V	3.8 V	+ 85 C		Reel, Cut Tape
ARM Microcontrollers - MCU ARM Cortex-M0+ 32-bit 25 MHz 64 kB USB MCU EFM32HG322F64G-C-QFP48R Silicon Labs 1: ¥1,013.2 504In Stock 1,000Expected 2/5/2027	Mfr. Part # EFM32HG322F64G-C-QFP48R Mouser Part # 634-HG322F64GCQFP48R	Silicon Labs	ARM Microcontrollers - MCU ARM Cortex-M0+ 32-bit 25 MHz 64 kB USB MCU Learn More about Silicon Labs efm32 happy gecko mcus	Datasheet	504In Stock 1,000Expected 2/5/2027	Cut Tape ¥1,013.2 ¥772.4 ¥710.9 ¥644.5 ¥632.8 Reel ¥536.5 MouseReel Available	Min.: 1 Mult.: 1 : 1,000	SMD/SMT	TQFP-48	ARM Cortex M0+	32 bit	25 MHz	64 kB	8 kB	12 bit	35 I/O	1.98 V	3.8 V	+ 85 C		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU EFM8LB12F32E-C-QFN24R Silicon Labs 1: ¥503.3 980In Stock	Mfr. Part # EFM8LB12F32E-C-QFN24R Mouser Part # 634-LB12F32ECQFN24R	Silicon Labs	8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU Learn More about Silicon Labs silabs efm8 laser bee	Datasheet	980In Stock	Cut Tape ¥503.3 ¥375.4 ¥342.2 ¥307.3 Reel ¥260.8 View ¥290.7 ¥284 ¥269.1 ¥255.8 MouseReel Available	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-24	CIP-51 8051	8 bit	72 MHz	32 kB	2.25 kB	10 bit/12 bit/14 bit	20 I/O	2.2 V	3.6 V	+ 105 C		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU EFM8LB12F64E-C-QFN32R Silicon Labs 1: ¥588 3,867In Stock	Mfr. Part # EFM8LB12F64E-C-QFN32R Mouser Part # 634-LB12F64ECQFN32R	Silicon Labs	8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU Learn More about Silicon Labs silabs efm8 laser bee	Datasheet	3,867In Stock	Cut Tape ¥588 ¥456.8 ¥406.9 ¥373.7 View Reel ¥295.7 ¥363.8 ¥348.8 ¥295.7	Min.: 1 Mult.: 1 : 2,500	SMD/SMT	QFN-32	CIP-51 8051	8 bit	72 MHz	64 kB	4.25 kB	10 bit/12 bit/14 bit	29 I/O	2.2 V	3.6 V	+ 105 C		Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB LFO 8-bit MCU C8051F338-GM Silicon Labs 1: ¥1,935.1 57In Stock NRND	Mfr. Part # C8051F338-GM Mouser Part # 634-C8051F338-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB LFO 8-bit MCU	Datasheet	57In Stock	¥1,935.1 ¥1,514.8 ¥1,410.2 ¥1,295.6 View ¥1,282.3 ¥1,207.5 ¥1,179.3 Quote	Min.: 1 Mult.: 1	SMD/SMT	QFN-24	8051	8 bit	25 MHz	16 kB	768 B	10 bit	21 I/O	2.7 V	3.6 V	+ 85 C		Tube
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 8-bit MCU C8051F381-GM Silicon Labs 1: ¥1,205.9 415In Stock 1,533Expected 6/18/2027 NRND	Mfr. Part # C8051F381-GM Mouser Part # 634-C8051F381-GM NRND	Silicon Labs	8-bit Microcontrollers - MCU 8051 50 MHz 64 kB 8-bit MCU Learn More about Silicon Labs silabs usb mcus	Datasheet	415In Stock 1,533Expected 6/18/2027	¥1,205.9 ¥930.2 ¥860.4 ¥784 View ¥727.5 ¥725.9 ¥704.3	Min.: 1 Mult.: 1	SMD/SMT	QFN-32	8051	8 bit	48 MHz	64 kB	4.25 kB	10 bit	25 I/O	2.7 V	5.25 V	+ 85 C		Tube