  | P80C51 |  | Microcontroller with 4KB ROM, 128B RAM |
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| | P80C51FA | | ROMless microcontroller with 256B RAM |
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| | P80C51RA+ | | ROMless microcontroller with 512B RAM |
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| | P80C51X2 |  | Microcontroller with 4KB ROM |
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 | P83C51FA | | Microcontroller with 8K ROM with 256B RAM |
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| | P83C51FB | | Microcontroller with 16K ROM with 256B RAM |
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| | P83C51FC | | Microcontroller with 32K ROM with 256B RAM |
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| | P83C51RA+ | | Microcontroller with 8K ROM with 512B RAM |
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| | P83C51RB+ | | Microcontroller with 16K ROM with 512B RAM |
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| | P83C51RC+ | | Microcontroller with 32K ROM with 512B RAM |
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| | P83C51RD+ | | Microcontroller with 64K ROM with 512B RAM |
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| | P87C51 | | Microcontroller with 4KB OTP, 128B RAM |
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| | P87C51FA | | Microcontroller with 8K OTP, 256B RAM |
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| | P87C51FB | | Microcontroller with 16K OTP, 256B RAM |
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| | P87C51FC | | Microcontroller with 32K OTP, 256B RAM |
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| | P87C51MB2 |  | Microcontroller with 51MX memory extension, 64KB OTP, 2KB RAM |
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| | P87C51MC2 | | Microcontroller with 51MX memory extension, 96KB OTP, 3KB RAM |
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 | P87C51RA+ | | Microcontroller with 8K OTP, 512B RAM |
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| | P87C51RB+ | | Microcontroller with 16K OTP, 512B RAM |
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| | P87C51RC+ | | Microcontroller with 32K OTP, 512B RAM |
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| | P87C51RD+ | | Microcontroller with 64K OTP, 512B RAM |
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| | P87C51RA2 | | Microcontroller with 8KB OTP, 512B RAM, low voltage, low power, high speed |
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| | P87C51RB2 | | Microcontroller with 16KB OTP, 512B RAM, low voltage, low power, high speed |
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| | P87C51RC2 | | Microcontroller with 32KB OTP, 512B RAM, low voltage, low power, high speed |
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| | P87C51RD2 | | Microcontroller with 64KB OTP, 1KB RAM, low voltage, low power, high speed |
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| | P87C51X2 | | Microcontroller with 4KB OTP |
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| | P89C51RA2 | | Microcontroller with 8KB ISP/IAP flash, 512B RAM |
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| | P89C51RB2 |  | Microcontroller with 16KB ISP/IAP flash, 512B RAM |
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| | P89C51RC+ | | Microcontroller with 32KB ISP flash; 512B RAM |
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| | P89C51RC2 | | Microcontroller with 32KB ISP/IAP flash, 512B RAM |
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| | P89C51RD+ | | Microcontroller with 64KB ISP flash; 1KB RAM |
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| | P89C51RD2 | | Microcontroller with 64KB ISP/IAP flash, 1KB RAM |
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| | P89C51X2 | | Microcontroller with 4KB flash, 128B RAM |
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| | P89CV51RB2 | | Microcontroller with 16KB flash, 1KB RAM, SPI, 6-clock CPU, and 6/12-clock peripherals |
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| | P89CV51RC2 | | Microcontroller with 32KB flash, 1KB RAM, SPI, 6-clock CPU, and 6/12-clock peripherals |
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| | P89CV51RD2 | | Microcontroller with 64KB flash, 1KB RAM, SPI, 6-clock CPU, and 6/12-clock peripherals |
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| | P89LV51RB2 | | 3V low power microcontroller with 16KB flash, 1KB RAM |
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| | P89LV51RC2 | | 3V low power microcontroller with 32KB flash, 1KB RAM |
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| | P89LV51RD2 | | 3V low power microcontroller with 64KB flash, 1KB RAM |
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| | P89V51RB2 | | 5V low power microcontroller with 16KB flash, 1KB RAM |
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| | P89V51RC2 | | 5V low power microcontroller with 32KB flash, 1KB RAM |
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| | P89V51RD2 | | 5V low power microcontroller with 64KB flash, 1KB RAM |
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| | 74F51 | | 5V Dual 2-Wide 2-Input, 2-Wide 3-Input AND-OR-Invert Gate |
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