Atmel 89S52 er en single-board computer. Den kræver ganske få eksterne komponeter for at fungerer.

Eksempel på print udlægning:

Hent Diagram og printudlægning-filer for printulægningsprogrammet DesignSpark
SCH
PCB

Du kan købe PLCC44 sokkeler som passer til printudlæget hos Softgenie .

Programmering af 89S52
ISP project

Atmel 89S52

Datablad

Ben	navn	Funktion	Alternativ funktion
1	NC
2	P1.0	Port1 bit 0
3	P1.1	Port1 bit 1
4	P1.2	Port1 bit 2
5	P1.3	Port1 bit 3
6	P1.4	Port1 bit 4
7	P1.5	Port1 bit 5	SPI MOSI
8	P1.6	Port1 bit 6	SPI MISO
9	P1.7	Port1 bit 7	SPI SCK
10	RST	Reset
11	P3.0	Port3 bit 0	RS232 RXD
12	NC
13	P3.1	Port3 bit 1	RS232 TXD
14	P3.2	Port3 bit 2	Interrupt 0
15	P3.3	Port3 bit 3	Interrupt 1
16	P3.4	Port3 bit 4
17	P3.5	Port3 bit 5
18	P3.6	Port3 bit 6
19	P3.7	Port3 bit 7
20	XTAL 2	Krystal ben 2
21	XTAL 1	Krystal ben 1
22	GND	Ground
23	NC
24	P2.0	Port2 bit 0
25	P2.1	Port2 bit 1
26	P2.2	Port2 bit 2
27	P2.3	Port2 bit 3
28	P2.4	Port2 bit 4
29	P2.5	Port2 bit 5
30	P2.6	Port2 bit 6
31	P2.7	Port2 bit 7
32	PSEN
33	ALE/PROG
34	NC
35	EA/VPP
36	P0.0	Port0 bit 0
37	P0.1	Port0 bit 1
38	P0.2	Port0 bit 2
39	P0.3	Port0 bit 3
40	P0.4	Port0 bit 4
41	P0.5	Port0 bit 5
42	P0.6	Port0 bit 6
43	P0.7	Port0 bit 7
44	VCC