IN-12 clock on Atmega8

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STD IN-12 clock on Atmega8

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Update time： 2021-07-25 07:25:13

Creation time： 2020-01-23 13:19:13

Description

Retro-clock with IN-12 Atmega8ю Frimware: https://cxem.net/mc/files/mc215_Fayly(5).rar

Design Drawing

schematic diagram

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In-12_clock
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In-12_bez_nomynalov
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PCB

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Indication
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Controller
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	4700u	C1,C11	CAP-D3.0XF1.5	2
2	33pf	C2,C12	RAD-0.1	2
3	220u	C3,C13	CAP-D3.0XF1.5	2
4	47u	C4,C14	CAP-D3.0XF1.5	2
5	2.2uF	C5,C15	CAP-D8.0XF3.5	2
6	0.1uF	C6,C16	CAP-4.2*3.8-5.08	2
7	470uF	C7,C17	CAP-D10.0XF5.0	2
8	0.1uF	C8,C10,C18,C20	0805	4
9	33pF	C9,C19	0805	2
10	1N4448	D1,D3	DO-35	2
11	BVY26C	D2,D4	DO-35	2
12	DISP_IN12A	DISP1,DISP2,DISP3,DISP4,DISP5,DISP6,DISP7,DISP8	DISP_IN-12_SOCKET	8
13	KEYS	H1,H2,H3,H4	HDR-5X1/2.54	4
14	KATODI	J1,J3,J4	HDR-TH_10PIN-V-FEMALE-PITCH2.54	3
15	KATODS	J2	HDR-TH_10PIN-V-FEMALE-PITCH2.54	1
16	K4-6×6_TH	KEY1,KEY2,KEY3,KEY4,KEY5,KEY6,KEY7,KEY8	KEY-TH_4P-L6.0-W6.0-P4.50-LS6.5	8
17	1k	L1,L3	1X02	2
18	330uHn	L2,L4	AXIAL-0.6	2
19	12v	P1,P6	HDR-TH_2P-P2.54-V-M	2
20	ANODI	P2,P7,P10	HDR-6X1/2.54	3
21	PROG	P3,P8	HDR-8X1/2.54	2
22	VCC	P4,P9	HDR-TH_2P-P2.54-V-M	2
23	ANODS	P5	HDR-6X1/2.54	1
24	2N3906	Q1,Q22	TO-92(TO-92-3)	2
25	MPSA42	Q2,Q3,Q4,Q5,Q6,Q7,Q8,Q9,Q10,Q11,Q23,Q24,Q25,Q26,Q27,Q28,Q29,Q30,Q31,Q32	TO-92_3PIN-L4.95-W3.94-PITCH2.54-L	20
26	2N4403	Q12,Q13,Q14,Q15,Q33,Q34,Q35,Q36	TO-92(TO-92-3)	8
27	BC547B Tube	Q16,Q17,Q18,Q19,Q20,Q37,Q38,Q39,Q40,Q41	TO-92_3PIN-L4.95-W3.94-PITCH2.54-L	10
28	IRF840	Q21,Q42	TO-220	2
29	33k	R1,R2,R9,R10,R11,R12,R13,R14,R15,R16,R17,R18,R23,R24,R25,R26,R35,R42,R43,R50,R51,R52,R53,R54,R55,R56,R57,R58,R59,R64,R65,R66,R67,R76	AXIAL-0.3	34
30	3.3k	R3,R4,R44,R45	AXIAL-0.3	4
31	330	R5,R6,R7,R8,R46,R47,R48,R49	AXIAL-0.3	8
32	100k	R19,R20,R21,R22,R60,R61,R62,R63	AXIAL-0.3	8
33	470k	R27,R28,R29,R30,R68,R69,R70,R71	AXIAL-0.3	8
34	47k	R31,R32,R33,R34,R72,R73,R74,R75	AXIAL-0.3	8
35	220k	R36,R77	AXIAL-0.3	2
36	1	R37,R78	AXIAL-0.3	2
37	100	R38,R79	AXIAL-0.3	2
38	1M	R39,R80	AXIAL-0.3	2
39	2,2-3,3	R40,R81	RES-ADJ_3386P	2
40	4.7k	R41,R82	AXIAL-0.3	2
41	BUZZER	SG1,SG2	BUZZER-12MM-KIT	2
42	PCF8583PN	U1,U5	DIP8	2
43	ATMEGA8A-PU	U2,U6	DIP-28_300MIL	2
44	L7805ABV	U3,U7	TO-220(TO-220-3)	2
45	MC34063ABD-TR	U4,U8	SOIC-8	2
46	32768Hz	X1,X2	HC-49US_L11.5-W4.5-P4.88	2