This page includes the schematics for the 8052.com SBC. You may build a functioning version
of the SBC by building based on these schematics. Click on each schematic page for a full-size
version.
| Reference |
Quantity |
Part |
Digikey Part Number |
Datasheet |
| C1-C14,C24,C25 |
16 |
0.1uF ceramic capacitor |
1338PH-ND |
|
| C15,C23 |
2 |
10uF electrolytic capacitor |
P5134-ND |
|
| C16-C19 |
4 |
1uF electrolytic capacitor |
P10312-ND |
|
| C20,C21 |
2 |
27pF ceramic capacitor |
P10797-ND |
|
| C22 |
1 |
1000uF electrolytic capacitor |
P10253-ND |
|
| C26 |
1 |
100uF capacitor |
P11198-ND |
|
| D1-D4 |
4 |
1N4001 diode |
1N4001GICT-ND |
|
| D5 |
1 |
Red LED |
404-1090-ND |
|
| D6 |
1 |
Yellow LED |
404-1092-ND |
|
| J1 |
1 |
2.1mm power connector |
CP-202A-ND/CP-102AH-ND |
|
| J2 |
1 |
DB25 male conector |
A23285-ND |
|
| J3,J4 |
2 |
14-pin Female Header |
S4207-ND |
|
| J5 |
1 |
8-pin Female Header |
S4008-ND |
|
| J6 |
1 |
DB6 DB9 female RS232 |
A23303-ND |
|
| J7-J12 |
6 |
8-pin SIPs |
|
|
| JP1 |
1 |
2-pin jumper |
|
|
| JP2-JP6 |
5 |
3-pin jumper |
|
|
| R1,R7 |
2 |
330 |
P330BACT-ND |
|
| R2 |
1 |
220 |
P220BACT-ND |
|
| R3 |
1 |
10K Variable Resistor |
3362U-103-ND |
|
| R5,R6,R8 |
3 |
10K |
P10KBACT-ND |
|
| R4 |
1 |
100 |
P100BACT-ND |
|
| RN1 |
1 |
6.8k 6-pin resistor network |
750-61-R6.8K-ND |
|
| SW1,SW2 |
2 |
Momentary push button, normally open |
P8006S-ND |
|
| U1 |
1 |
Atmel AT89S8253 |
AT89S8253-24PI-ND |
Datasheet |
| U2 |
1 |
74LS573 octal latch |
296-1596-5-ND or TC74HC573AP-ND |
Datasheet |
| U3 |
1 |
27C64 UV EPROM (optional) |
497-1685-5-ND |
Datasheet |
| U4 |
1 |
62256 8x32k RAM (or 6264) |
428-1080-ND |
Datasheet |
| U5 |
1 |
74LS138 3x8 decoder/MUX |
296-1639-5-ND |
Datasheet |
| U6 |
1 |
74LS08 Quad 2-Input AND Gate |
296-1633-5-ND |
Datasheet |
| U7 |
1 |
74LS04 Hex Inverter |
296-1629-5-ND |
Datasheet |
| U8 |
1 |
74LS32 Quad 2-Input OR Gate |
296-1658-5-ND |
Datasheet |
| U9 |
1 |
74HC541 Octal Buffer/Driver |
296-12813-5-ND |
Datasheet |
| U10 |
1 |
MAX232 Dual RS232 Driver/Receiver |
296-1402-5-ND |
Datasheet |
| U11 |
1 |
74LS125 Quad Tri-State Buffer Active Low |
296-1638-5-ND or 296-8386-5-ND |
Datasheet |
| U12 |
1 |
74HC126 Quad Tri-State Buffer Active High |
296-8221-5-ND |
Datasheet |
| U13 |
1 |
DS1307 real time clock (RTC) |
DS1307-ND |
Datasheet |
| U14 |
1 |
AT25010A 128x8 Serial EEPROM |
AT25010A-10PI-2.7-ND |
Datasheet |
| U15 |
1 |
(OMIT--Don't use) MN13811 4.6V Reset Supervisor |
|
Datasheet |
| U16 |
1 |
LM7805 5V voltage regulator |
296-1974-5-ND |
Datasheet |
| X1 |
1 |
11.0592 MHz crystal |
X139-ND |
|
| X2 |
1 |
32.768 kHz crystal |
300-1002-ND |
|
| |
1 |
40-pin IC Socket |
A9440-ND |
|
| |
2 |
28-pin IC Socket |
A9428-ND |
|
| |
2 |
20-pin IC Socket |
A9420-ND |
|
| |
2 |
16-pin IC Socket |
A9416-ND |
|
| |
5 |
14-pin IC Socket |
A9414-ND |
|
| |
2 |
8-pin IC Socket |
A9408-ND |
|
| |
3 |
36-pin breakaway headers
for J7-J12, JP1-JP6
|
WM6436-ND |
|
| |
1 |
16x2 LCD (left side 2x7 connector) |
67-1770-ND or
67-1780-ND |
|
| |
1 |
4x4 Keypad |
GH5003-ND |
|
| |
1 |
5W Heatsink for 7805 |
HS121-ND |
|
| |
1 |
Wall transformer, 12VAC 750MA, 2.1mm |
MT7119-ND |
|
| |
4 |
Bumpons Hemispheres .50X.14 Clear |
SJ5312-7-ND |
|
