AZ80 Clock
attraktorhh·aZ80_Computer·Hardware/aZ80_Clock/aZ80_Clock.kicad_pcb
About the AZ80 Clock PCB
AZ80 Clock is an open source PCB design by attraktorhh, published on GitHub under the MIT license. It is a 2-layer board measuring 110.3 × 33.3 mm, with 24 components from 19 distinct parts.
Other key parts include the 74HCT04 and NE555. By type, the board carries 8 resistors, 6 capacitors, 4 diodes, 2 ICs, 1 crystal and 1 connector.
From the project
Die Taktgenerator Platine gibt den Takt des aZ80 Retro Computers vor und synchronisiert alle Karten.
Die Taktgenerator Platine gibt den Takt des aZ80 Retro Computers vor und synchronisiert alle Karten.
Es gibt zwei Modis die mit dem Jumper JP1 umgestellt werden können:
- 1 - Volle Geschwindigkeit mit 3.6864 MHz - 2 - Langsame Geschwindigkeit mit 4-20Hz
Im Normalfall läuft das aZ80 Retro System mit vollem 3.6864Mhz Takt, welcher auch die serielle Baudrate von 57.600 Baud vorgibt.

Main components on the AZ80 Clock
AZ80 Clock bill of materials (BOM)
24 components, 19 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74HCT04 | DIP-14_W7.62mm_Socket_LongPads | U1 |
| 1 | NE555 | DIP-8_W7.62mm_Socket_LongPads | U2 |
| 1 | 3,6864MHz | Crystal_HC49-4H_Vertical | Y1 |
| 1 | Z80 Bus | PinHeader_1x40_P2.54mm_Horizontal | J1 |
| 1 | Takt Auswahl | PinHeader_1x03_P2.54mm_Vertical | JP1 |
| 1 | 10k | Potentiometer_Piher_PT-10-H01_Horizontal | RV1 |
| 1 | SS14 INT | LED_D5.0mm | D1 |
| 1 | WR | LED_D5.0mm | D2 |
| 1 | RD | LED_D5.0mm | D3 |
| 1 | CLK | LED_D5.0mm | D4 |
| 1 | 10UF 100nF | C_Disc_D3.8mm_W2.6mm_P2.50mm | C1 |
| 2 | 10uF | CP_Radial_D5.0mm_P2.50mm | C2, C6 |
| 1 | 10nF | C_Disc_D3.8mm_W2.6mm_P2.50mm | C3 |
| 2 | 22pF | C_Disc_D3.8mm_W2.6mm_P2.50mm | C4, C5 |
| 1 | 10K 1M | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 1 | 22K 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2 |
| 1 | 3,3k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3 |
| 1 | 1k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R4 |
| 4 | 330 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5, R6, R7, R8 |
AZ80 Clock design files
The KiCad project lives in the attraktorhh/aZ80_Computer repository on GitHub; these links point at the commit this page was built from.
AZ80 Clock: common questions
How big is the AZ80 Clock PCB?
The AZ80 Clock measures 110.3 × 33.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the AZ80 Clock?
24 components, from 19 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the AZ80 Clock design files?
From the attraktorhh/aZ80_Computer repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the AZ80 Clock design in my own project?
Yes, under the terms of its MIT license, which attraktorhh chose for the repository.
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