Tiny 6821 Expansion

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STD Tiny 6821 Expansion

License: CERN Open Hardware License

Mode:

Editors' pick

Update time： 2023-03-12 19:05:20

Creation time： 2023-02-04 18:19:18

Description

This is an MC6821 expansion card for the Tiny 6809 Computer :

Design Drawing

schematic diagram

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PCB

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BOM

ID	Name	Designator	Footprint	Quantity
1	100nF	C1,C2	C0402_NEW	2
2	100uF	C4	CAP-SMD_L3.5-W2.8	1
3	10uF	C5	C0402	1
4	19-217/BHC-ZL1M2RY/3T	LED1,LED2,LED3,LED4,LED5,LED6,LED7,LED8,LED9,LED10,LED11,LED12,LED13,LED14,LED15,LED16	LED-0603_NOPAINT	16
5	KT-0603R	LED17,LED18,LED19,LED20	LED-0603_NOPAINT	4
6	AO3401A	Q1,Q2,Q3,Q4,Q5,Q6,Q7,Q8	SOT-23_L2.9-W1.3-P1.90-LS2.4-BR	8
7	4.7kΩ	R1	R0402	1
8	680Ω	R2,R3,R4,R5,R6,R7,R8,R9,R10,R11,R12	R0402	11
9	330Ω	R13	R0402	1
10	470Ω	RN1,RN2,RN3,RN4	RES-ARRAY-SMD_0603-8P-L3.2-W1.6-BL	4
11	10kΩ	RN5,RN6	RES-ARRAY-SMD_0402-8P-L2.0-W1.0-BL	2
12	TS-1187A-B-A-B	SW1,SW2	SW-SMD_4P-L5.1-W5.1-P3.70-LS6.5-TL-2	2
13	2.54MM_1*10_PIN	U1,U2	PINHEADER1*10	2
14	ULN2803A_C493377	U3	QFN-20_L4.0-W4.0-P0.50-BL-EP	1
15	2PIN	U4,U6,U7	PINHEADER1X2	3
16	MTP125-1215-MIRRORED	U5	HDR-30-OUTLINE-MIRRORED	1
17	MC6821	U13	DIP-40-600-ELL	1