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Linecards
Each product listed below has the high performance MCS251 architecture, PCA, H/W WDT, and 2nd UART.
Note: All speeds are not available in all package types.
Download a print-friendly version of the Intel® MCS51 linecards.
| 83C251TB |
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 |
2 |
0 |
32 |
24 |
CHMOS /
P,N,TN,TP |
L3 |
C,E |
| 80C251TB |
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 |
2 |
0 |
32 |
24 |
CHMOS /
P,N,TN,TP |
L3 |
C,E |
| 80C251TQ |
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 |
2 |
0 |
32 |
24 |
CHMOS /
P,N,TN |
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
C = Commercial Temperature
E = Express Temperature
87CX51,ROM = Factory Program ROM
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