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RL78/G21 16-Bit General-Purpose MCU

Renesas Electronics RL78/G21 16-Bit General-Purpose Microcontroller (MCU) is a cost-optimized, low-power MCU primarily designed for system control applications, with enhanced security features. The RL78/G21 achieves low current consumption during RUN operation while offering a competitive cost among Renesas MCUs in the 128KB and 256KB classes. The RL78/G21 addresses evolving requirements in home appliance applications, especially in the growing smart home segment, for system control and HMI functionalities.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.
16-bit Microcontrollers - MCU 16-BIT GENERAL MCU RL78/G21 256K 44LQFP -40 to 105 C R7F103GFJ3ZFP#UA0 Renesas Electronics 1: $2.69 317In Stock New Product	Mfr. Part # R7F103GFJ3ZFP#UA0 Mouser Part # 968-R7F103GFJ3ZF#UA0 New Product	Renesas Electronics	16-bit Microcontrollers - MCU 16-BIT GENERAL MCU RL78/G21 256K 44LQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	317In Stock	$2.69 $1.75 $1.59 $1.34 View $1.25 $1.09 $0.974 $0.954 $0.909	Min.: 1 Mult.: 1
16-bit Microcontrollers - MCU 16-BIT GENERAL MCU RL78/G21 256K 44LQFP -40 to 105 C R7F103GFJ3ZFP#BA0 Renesas Electronics 1: $2.68 A tariff of 38% may be applied if shipping to the United States. Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GFJ3ZFP#BA0 Mouser Part # 968-R7F103GFJ3ZF#BA0 New Product	Renesas Electronics	16-bit Microcontrollers - MCU 16-BIT GENERAL MCU RL78/G21 256K 44LQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	$2.68 $1.74 $1.58 $1.33 View $1.25 $1.09 $0.974 $0.954 $0.909 A tariff of 38% may be applied if shipping to the United States.	Min.: 1 Mult.: 1
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 20LSSOP -40 to 105 C Renesas Electronics R7F103G6G3ZSP#CA0 R7F103G6G3ZSP#CA0 Renesas Electronics 1: $1.73 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103G6G3ZSP#CA0 Mouser Part # 968-7F103G6G3ZSP#CA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 20LSSOP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	$1.73 $1.10 $0.987 $0.813 View $0.708 $0.671 $0.577 $0.538 $0.526	Min.: 1 Mult.: 1
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 20LSSOP -40 to 105 C Renesas Electronics R7F103G6G3ZSP#HA0 R7F103G6G3ZSP#HA0 Renesas Electronics 4,000: $0.526 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103G6G3ZSP#HA0 Mouser Part # 968-7F103G6G3ZSP#HA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 20LSSOP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	Reel $0.526	Min.: 4,000 Mult.: 4,000 : 4,000
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 20LSSOP -40 to 105 C Renesas Electronics R7F103G6J3ZSP#CA0 R7F103G6J3ZSP#CA0 Renesas Electronics 1: $2.35 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103G6J3ZSP#CA0 Mouser Part # 968-7F103G6J3ZSP#CA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 20LSSOP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	$2.35 $1.51 $1.35 $1.11 View $1.05 $0.919 $0.811 $0.80 $0.765	Min.: 1 Mult.: 1
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 20LSSOP -40 to 105 C Renesas Electronics R7F103G6J3ZSP#HA0 R7F103G6J3ZSP#HA0 Renesas Electronics 4,000: $0.765 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103G6J3ZSP#HA0 Mouser Part # 968-7F103G6J3ZSP#HA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 20LSSOP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	Reel $0.765	Min.: 4,000 Mult.: 4,000 : 4,000
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 32LQFP -40 to 105 C Renesas Electronics R7F103GBG3ZFP#BA0 R7F103GBG3ZFP#BA0 Renesas Electronics 2,000: $0.61 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GBG3ZFP#BA0 Mouser Part # 968-7F103GBG3ZFP#BA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 32LQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	$0.61 $0.593	Min.: 2,000 Mult.: 2,000
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 32LQFP -40 to 105 C Renesas Electronics R7F103GBG3ZFP#HA0 R7F103GBG3ZFP#HA0 Renesas Electronics 2,000: $0.61 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GBG3ZFP#HA0 Mouser Part # 968-7F103GBG3ZFP#HA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 32LQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	Reel $0.61 $0.593	Min.: 2,000 Mult.: 2,000 : 2,000
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 32LQFP -40 to 105 C Renesas Electronics R7F103GBG3ZFP#UA0 R7F103GBG3ZFP#UA0 Renesas Electronics 1: $1.98 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GBG3ZFP#UA0 Mouser Part # 968-7F103GBG3ZFP#UA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 32LQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	Cut Tape $1.98 $1.26 $1.12 $0.929 Reel $0.81 View $0.767 $0.644 $0.61 $0.593 MouseReel Available	Min.: 1 Mult.: 1 : 250
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 32LQFP -40 to 105 C Renesas Electronics R7F103GBJ3ZFP#BA0 R7F103GBJ3ZFP#BA0 Renesas Electronics 2,000: $0.877 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GBJ3ZFP#BA0 Mouser Part # 968-7F103GBJ3ZFP#BA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 32LQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	$0.877 $0.839	Min.: 2,000 Mult.: 2,000
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 32LQFP -40 to 105 C Renesas Electronics R7F103GBJ3ZFP#HA0 R7F103GBJ3ZFP#HA0 Renesas Electronics 2,000: $0.877 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GBJ3ZFP#HA0 Mouser Part # 968-7F103GBJ3ZFP#HA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 32LQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	Reel $0.877 $0.839	Min.: 2,000 Mult.: 2,000 : 2,000
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 32LQFP -40 to 105 C Renesas Electronics R7F103GBJ3ZFP#UA0 R7F103GBJ3ZFP#UA0 Renesas Electronics 1: $2.57 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GBJ3ZFP#UA0 Mouser Part # 968-7F103GBJ3ZFP#UA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 32LQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	Cut Tape $2.57 $1.66 $1.48 $1.22 Reel $1.15 View $1.00 $0.889 $0.877 $0.839 MouseReel Available	Min.: 1 Mult.: 1 : 250
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 44LQFP -40 to 105 C Renesas Electronics R7F103GFG3ZFP#BA0 R7F103GFG3ZFP#BA0 Renesas Electronics 1,280: $0.725 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GFG3ZFP#BA0 Mouser Part # 968-7F103GFG3ZFP#BA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 44LQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	$0.725 $0.686 $0.668	Min.: 1,280 Mult.: 1,280
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 44LQFP -40 to 105 C Renesas Electronics R7F103GFG3ZFP#HA0 R7F103GFG3ZFP#HA0 Renesas Electronics 1: $2.22 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GFG3ZFP#HA0 Mouser Part # 968-7F103GFG3ZFP#HA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 44LQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	Cut Tape $2.22 $1.42 $1.26 $1.04 Reel $0.725 View $0.911 $0.863 $0.686 $0.668 MouseReel Available	Min.: 1 Mult.: 1 : 1,000
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 44LQFP -40 to 105 C Renesas Electronics R7F103GFG3ZFP#UA0 R7F103GFG3ZFP#UA0 Renesas Electronics 1: $2.22 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GFG3ZFP#UA0 Mouser Part # 968-7F103GFG3ZFP#UA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 44LQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	$2.22 $1.42 $1.26 $1.04 View $0.911 $0.863 $0.725 $0.686 $0.668	Min.: 1 Mult.: 1
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 44LQFP -40 to 105 C Renesas Electronics R7F103GFJ3ZFP#HA0 R7F103GFJ3ZFP#HA0 Renesas Electronics 1,000: $0.974 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GFJ3ZFP#HA0 Mouser Part # 968-7F103GFJ3ZFP#HA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 44LQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	Reel $0.974 $0.954 $0.909	Min.: 1,000 Mult.: 1,000 : 1,000
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 48LFQFP -40 to 105 C Renesas Electronics R7F103GGG3ZFB#BA0 R7F103GGG3ZFB#BA0 Renesas Electronics 2,000: $0.717 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GGG3ZFB#BA0 Mouser Part # 968-7F103GGG3ZFB#BA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 48LFQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	$0.717 $0.697	Min.: 2,000 Mult.: 2,000
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 48LFQFP -40 to 105 C Renesas Electronics R7F103GGG3ZFB#HA0 R7F103GGG3ZFB#HA0 Renesas Electronics 2,000: $0.717 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GGG3ZFB#HA0 Mouser Part # 968-7F103GGG3ZFB#HA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 48LFQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	Reel $0.717 $0.697	Min.: 2,000 Mult.: 2,000 : 2,000
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 48LFQFP -40 to 105 C Renesas Electronics R7F103GGG3ZFB#UA0 R7F103GGG3ZFB#UA0 Renesas Electronics 1: $2.32 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GGG3ZFB#UA0 Mouser Part # 968-7F103GGG3ZFB#UA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 48LFQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	$2.32 $1.48 $1.32 $1.09 View $0.951 $0.901 $0.757 $0.717 $0.697	Min.: 1 Mult.: 1
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 48LFQFP -40 to 105 C Renesas Electronics R7F103GGJ3ZFB#BA0 R7F103GGJ3ZFB#BA0 Renesas Electronics 2,000: $0.985 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GGJ3ZFB#BA0 Mouser Part # 968-7F103GGJ3ZFB#BA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 48LFQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	$0.985 $0.939	Min.: 2,000 Mult.: 2,000
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 48LFQFP -40 to 105 C Renesas Electronics R7F103GGJ3ZFB#HA0 R7F103GGJ3ZFB#HA0 Renesas Electronics 2,000: $0.985 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GGJ3ZFB#HA0 Mouser Part # 968-7F103GGJ3ZFB#HA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 48LFQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	Reel $0.985 $0.939	Min.: 2,000 Mult.: 2,000 : 2,000
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 48LFQFP -40 to 105 C Renesas Electronics R7F103GGJ3ZFB#UA0 R7F103GGJ3ZFB#UA0 Renesas Electronics 1: $2.77 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GGJ3ZFB#UA0 Mouser Part # 968-7F103GGJ3ZFB#UA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 256K 48LFQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	$2.77 $1.80 $1.63 $1.37 View $1.29 $1.13 $1.00 $0.985 $0.939	Min.: 1 Mult.: 1
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 64LQFP -40 to 105 C Renesas Electronics R7F103GLG3ZFA#BA0 R7F103GLG3ZFA#BA0 Renesas Electronics 952: $0.905 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GLG3ZFA#BA0 Mouser Part # 968-7F103GLG3ZFA#BA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 64LQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	Reel $0.905 $0.893 $0.854	Min.: 952 Mult.: 952 : 952
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 64LQFP -40 to 105 C Renesas Electronics R7F103GLG3ZFA#HA0 R7F103GLG3ZFA#HA0 Renesas Electronics 1,000: $0.905 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GLG3ZFA#HA0 Mouser Part # 968-7F103GLG3ZFA#HA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 64LQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	Reel $0.905 $0.893 $0.854	Min.: 1,000 Mult.: 1,000 : 1,000
Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 64LQFP -40 to 105 C Renesas Electronics R7F103GLG3ZFA#UA0 R7F103GLG3ZFA#UA0 Renesas Electronics 1: $2.62 Non-Stocked Lead-Time 18 Weeks New Product	Mfr. Part # R7F103GLG3ZFA#UA0 Mouser Part # 968-7F103GLG3ZFA#UA0 New Product	Renesas Electronics	Renesas Electronics 16-BIT GENERAL MCU RL78/G21 128K 64LQFP -40 to 105 C Learn More about Renesas Electronics renesas rl78 g21 mcus	Datasheet	Non-Stocked Lead-Time 18 Weeks	Cut Tape $2.62 $1.69 $1.51 Reel $1.24 $1.17 View $1.02 $0.905 $0.893 $0.854 MouseReel Available	Min.: 1 Mult.: 1 : 119

RL78/G21 16-Bit General-Purpose MCU

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RL78/G21 16-Bit General-Purpose MCU

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