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Embedded & Flash Memory  Microcontrollers   Intel® MCS® 51/251   MCS 51 Classic Linecards

MCS 51 Microcontrollers - Classic
Linecards

Note: All speeds are not available in all package types.

Download a print-friendly version of the Intel® MCS51 linecards.

80C31BH
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
ROMless 128 2 1 0 32 16,24 CHMOS /
D,N,P,S		 N/A C,E
Key Features:  Power Save Modes

80C51BH
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
4K ROM 128 2 1 0 32 12,16,24 CHMOS/
N,P,S		 P C,E
Key Features:  Power Save Modes

87C51
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
4K EPROM/
OTP		 128 2 1 0 32 16,24 CHMOS/
D,N,P,S		 L3 C,E
Key Features:  Three-level Memory Lock

80C32
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
ROMless 256 3 1 0 32 16,24 CHMOS/
N,P,S		 N/A C,E
Key Features:  Up-Down Timer/Counter

80C52
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
8K ROM 256 3 1 0 32 12,16,24 CHMOS/
N,P,S		 L1 C,E
Key Features:  Up-Down Timer/Counter

87C52
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
8K EPROM/
OTP		 256 3 1 0 32 16,24 CHMOS/
D,N,P,S		 L3 C,E
Key Features:  Up-Down Timer/Counter

80C54
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
16K ROM 256 3 1 0 32 12,16,24 CHMOS/
N,P,S		 L1 C,E
Key Features:  Up-Down Timer/Counter

87C54
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
16K EPROM/
OTP		 256 3 1 0 32 16,24,33 CHMOS/
D,N,P,S		 L3 C,E,A
Key Features:  Up-Down Timer/Counter

87C58
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
32K ROM 256 3 1 0 32 16,24,33 CHMOS/
N,P,S		 L1 C,E
Key Features:  Up-Down Timer/Counter

87C58
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
32K EPROM/
OTP		 256 3 1 0 32 16,24,33 CHMOS/
D,N,P,S		 L3 C,E
Key Features:  Up-Down Timer/Counter

80C51FA
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
ROMless 256 3 1 0 32 16,24,33 CHMOS/
D,N,P,S		 N/A C,E
Key Features:  Programmable Counter Array (PCA), programmable clock out

83C51FA
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
8K ROM 256 3 1 0 32 16,24 CHMOS/
N,P,S		 L1 C,E,A
Key Features:  Programmable Counter Array (PCA), programmable clock out

87C51FA
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
8K EPROM/
OTP		 256 3 1 0 32 16,24,33 CHMOS/
D,N,P,S		 L3 C,E,A
Key Features:  Programmable Counter Array (PCA), programmable clock out

87C51FB
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
16K ROM 256 3 1 0 32 16,24,33 CHMOS/
N,P,S		 L1 C,E,A
Key Features:  Programmable Counter Array (PCA), programmable clock out

87C51FB
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
16K EPROM/
OTP		 256 3 1 0 32 16,24,33 CHMOS/
D,N,P,S		 L3 C,E,A
Key Features:  Programmable Counter Array (PCA), programmable clock out

87C51FC
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
32K ROM 256 3 1 0 32 16,24,33 CHMOS/
D,N,P,S		 L1 C,E,A
Key Features:  Programmable Counter Array (PCA), programmable clock out

87C51FC
ROM/
EPROM
(Bytes)		 Register RAM
(Bytes)		 Timer/
Counters		 Serial
Port		 Analog
Input
Channels
 I/O
Pins		 Speed
(MHz)		 Process / Package Security Temp
32K EPROM/
OTP		 256 3 1 0 32 16,24,33 CHMOS/
D,N,P,S		 L3 C,E,A
Key Features:  Programmable Counter Array (PCA), programmable clock out

Package Options

    D = 40LD CerDIP
    Ku = 100LD QFP (Quad Flat Pack)
    N = 44LD PLCC, N1 = 68LD PLCC
    P = 40LD PDIP, P1 = 48LD PDIP
    S = 44LD QFP (Quad Flat Pack)
    Sb = 100LD SQFP (Shrink Quad Flat Pack)
    ROM/EPROM (bytes):
    *ROM = SystemSoft Standard BIOSB
Temperature Ranges
    C = Commercial (0 to 70 degrees C)
    E = Extended (-40 to 85 degrees C)
    A = Automotive (-40 to 125 degrees C). To receive more information on Intel's Automotive Products, call (800) 548-4725 and ask for document #272452-01, "The Winning Formula Automotive Brochure."
    Speed (MHz):*= commercial temperature range only
    Security: L1 = 1 Lock Bit
    L2 = 2 Lock Bits
    L3 = 3 Lock Bits
    P = Protection
Nomenclature
    83C51xx = Mask Rom
    80C5x = Mask Rom
    87C51xx,Rom = FPROM
    87C5x,Rom = FPROM
Where available, order Factory Programmed Rom (FPROM).

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