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Linecards
Each product listed below has the high performance MCS251 architecture, PCA, and H/W WDT.
Note: All speeds are not available in all package types.
Download a print-friendly version of the Intel® MCS51 linecards.
| 87C251SA |
ROM/
EPROM
(Bytes) |
Register RAM
(Bytes) |
Timer/
Counters |
Serial
Port |
Analog
Input
Channels
|
I/O
Pins |
Speed
(MHz) |
Process / Package |
Security |
Temp |
| 8K |
1K |
3 |
1 |
0 |
32 |
16 |
CHMOS /
P,N,TN,TP |
L3 |
C,E |
| 87C251SB |
ROM/
EPROM
(Bytes) |
Register RAM
(Bytes) |
Timer/
Counters |
Serial
Port |
Analog
Input
Channels
|
I/O
Pins |
Speed
(MHz) |
Process / Package |
Security |
Temp |
| 16K |
1K |
3 |
1 |
0 |
32 |
16 |
CHMOS /
P,N,TN,TP |
L3 |
C,E |
| 87C251SP |
ROM/
EPROM
(Bytes) |
Register RAM
(Bytes) |
Timer/
Counters |
Serial
Port |
Analog
Input
Channels
|
I/O
Pins |
Speed
(MHz) |
Process / Package |
Security |
Temp |
| 8K |
512 |
3 |
1 |
0 |
32 |
16 |
CHMOS /
P,N,TN,TP |
L3 |
C,E |
| 87C251SQ |
ROM/
EPROM
(Bytes) |
Register RAM
(Bytes) |
Timer/
Counters |
Serial
Port |
Analog
Input
Channels
|
I/O
Pins |
Speed
(MHz) |
Process / Package |
Security |
Temp |
| 16K |
512 |
3 |
1 |
0 |
32 |
16 |
CHMOS /
P,N,TN,TP |
L3 |
C,E |
| 83C251SA (87C251SA, ROM) |
ROM/
EPROM
(Bytes) |
Register RAM
(Bytes) |
Timer/
Counters |
Serial
Port |
Analog
Input
Channels
|
I/O
Pins |
Speed
(MHz) |
Process / Package |
Security |
Temp |
| 8K |
1K |
3 |
1 |
0 |
32 |
16 |
CHMOS /
P,N,TN,TP |
L3 |
C,E |
| 83C251SB (87C251SB, ROM) |
ROM/
EPROM
(Bytes) |
Register RAM
(Bytes) |
Timer/
Counters |
Serial
Port |
Analog
Input
Channels
|
I/O
Pins |
Speed
(MHz) |
Process / Package |
Security |
Temp |
| 16K |
1K |
3 |
1 |
0 |
32 |
16 |
CHMOS /
P,N,TN,TP |
L3 |
C,E |
| 83C251SP (87C251SP, ROM) |
ROM/
EPROM
(Bytes) |
Register RAM
(Bytes) |
Timer/
Counters |
Serial
Port |
Analog
Input
Channels
|
I/O
Pins |
Speed
(MHz) |
Process / Package |
Security |
Temp |
| 8K |
512 |
3 |
1 |
0 |
32 |
16 |
CHMOS /
P,N,TN,TP |
L3 |
C,E |
| 83C251SQ (87C251SQ, ROM) |
ROM/
EPROM
(Bytes) |
Register RAM
(Bytes) |
Timer/
Counters |
Serial
Port |
Analog
Input
Channels
|
I/O
Pins |
Speed
(MHz) |
Process / Package |
Security |
Temp |
| 16K |
512 |
3 |
1 |
0 |
32 |
16 |
CHMOS /
P,N,TN,TP |
L3 |
C,E |
| 80C251SB |
ROM/
EPROM
(Bytes) |
Register RAM
(Bytes) |
Timer/
Counters |
Serial
Port |
Analog
Input
Channels
|
I/O
Pins |
Speed
(MHz) |
Process / Package |
Security |
Temp |
| ROMless |
1K |
3 |
1 |
0 |
32 |
16 |
CHMOS /
P,N,TN,TP |
L3 |
C,E |
| 80C251SQ |
ROM/
EPROM
(Bytes) |
Register RAM
(Bytes) |
Timer/
Counters |
Serial
Port |
Analog
Input
Channels
|
I/O
Pins |
Speed
(MHz) |
Process / Package |
Security |
Temp |
| ROMless |
512 |
3 |
1 |
0 |
32 |
16 |
CHMOS /
P,N,TN,TP |
L3 |
C,E |
Nomenclature
P = 40 Lead Plastic Dual Inline Package at commercial temp
N = 44 Lead Plastic Lead Chip Carrier at commercial temp
TN = 44 Lead Plastic Lead Chip Carrier at express temp
TP = 40 Lead Plastic Dual Inline Package at express temp
C = Commercial Temperature
E = Express Temperature
87CX51,ROM = Factory Program ROM
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