8751

8-bit Microcontroller

Cross-Reference

Intel			MCS51
Temic			TSC87

Family table

Model	ROM size	RAM size
8031AH	none	128 x 8
8051AH	4k x 8 ROM	128 x 8
8751BH	4k x 8 EPROM	128 x 8
8751H	4k x 8 EPROM	128 x 8
8032AH	none	128 x 8
8052AH	8k x 8 ROM	128 x 8
8752BH	8k x 8 EPROM	128 x 8
TSC80C31	none	128B
TSC80C51	4kB	128B
TSC87C51	4kB OTP	128B
80C32	none	256B
80C52	8kB	256B
TSC87C52	8kB OTP	256B
80C154	none	256B
83C154	16kB	256B
83C154D	32kB	256B

Pinout

          DIP40-600mil
           +---\/---+
   T2/P1.0 | 1    40| Vcc
 T2EX/P1.1 | 2    39| P0.0/AD0
      P1.2 | 3    38| P0.1/AD1
      P1.3 | 4    37| PO.2/AD2
      P1.4 | 5    36| P0.3/AD3
      P1.5 | 6    35| P0.4/AD4
      P1.6 | 7    34| P0.5/AD5
      P1.7 | 8    33| P0.6/AD6
       RST | 9    32| P0.7/AD7
  RXD/P3.0 |10    31| *EA/Vpp
  TXD/P3.1 |11    30| ALE/*PROG
*INT0/P3.2 |12    29| *PSEN
*INT1/P3.3 |13    28| P2.7/A15
   T0/P3.4 |14    27| P2.6/A14
   T1/P3.5 |15    26| P2.5/A13
  *WR/P3.6 |16    25| P2.4/A12
  *RD/P3.7 |17    24| P2.3/A11
     XTAL2 |18    23| P2.2/A10
     XTAL1 |19    22| P2.1/A9
       Vss |20    21| P2.0/A8
           +--------+


              LCC44-690x690mil
+---------------------------------------------------------------+
|  7 P1.5        | 18 P3.6/*WR  | 29 P2.5/A13   | 40 P0.3/AD3   |
|  8 P1.6        | 19 P3.7/*RD  | 30 P2.6/A14   | 41 P0.2/AD2   |
|  9 P1.7        | 20 XTAL2     | 31 P2.7/A15   | 42 P0.1/AD1   |
| 10 RST         | 21 XTAL1     | 32 *PSEN      | 43 P0.0/AD0   |
| 11 P3.0/RxD    | 22 Vss       | 33 ALE/*PROG  | 44 Vcc        |
| 12 RESERVED    | 23 RESERVED  | 34 RESERVED   |  1 Vss1       |
| 13 P3.1/TxD    | 24 P2.0/A8   | 35 *EA/Vpp    |  2 P1.0/T2    |
| 14 P3.2/*INT0  | 25 P2.1/A9   | 36 P0.7/AD7   |  3 P1.1/T2EX  |
| 15 P3.3/*INT1  | 26 P2.2/A10  | 37 P0.6/AD6   |  4 P1.2       |
| 16 P3.4/T0     | 27 P2.3/A11  | 38 P0.5/AD5   |  5 P1.3       |
| 17 P3.5/T1     | 28 P2.4/A12  | 39 P0.4/AD4   |  6 P1.4       |
+---------------------------------------------------------------+

Frequency

DIP40
Set reader to FREQ, put black probe to GND, red probe to 18,19 to measure CPU clock
LCC44
Set reader to FREQ, put black probe to GND, red probe to 20,21 to measure CPU clock

External links

8751 page on Wikipedia
8751 page on CPU-World

Files

• 

  Intel MCS51 Family Datasheet

• 

  Temic TSC87 Family datasheet

• 

  TSC87C52 Datasheet