4 layers254 × 254 mm
2 layers101.6 × 76.2 mm
Cat644
carangil/cat64411Cat-644 is a microcomputer based around the Atmega644 microcontroller. This repository will hold both hardware designs and software source code.
- Size
- 101.6 × 76.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 51
- Nets
- 71
- Pads
- 255
- Tracks, vias
- 921, 54
- Pours
- 300
- Routed
- Yes
- KiCad
- KiCad 5 (file 20160815)
- Created
- 19 Aug 2014
- Updated
- 7 Nov 2022
Overview
Cat644 is an open-source printed circuit board by carangil, from the carangil/cat644 repository on GitHub, published under the GPL-2.0 licence. It is a 2-layer board of 101.6 × 76.2 mm with 51 parts on 71 nets, routed with 921 tracks and 54 vias.
It is built around the ATMEGA644PA-AU, MAX232N and 74LS573PC. Its parts include 14 capacitors, 11 resistors, 8 ICs, 7 connectors and 5 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
3
ATMEGA644PA-AU
TQFP-44(10x10)-40℃~+85℃ 1.8V~5.5V 10bit 20MHz 2KB 32 4KB 64KB 8 Bit AVR Built-in FLASH TQFP-44(10x10) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
MAX232N
PDIP-160℃~+70℃ 120Kbps 2 2 4.5V~5.5V Transceiver PDIP-16 RS232 ICs ROHSTexas InstrumentsRS232 ICs
74LS573PC
DIP-200℃~+70℃ 10ns 3ns 4.75V~5.25V 74LS 8 D Latch Tri-State DIP-20 Latches ROHSTexas InstrumentsLatches
README
README.mdcat644
Cat-644 is a microcomputer based around the Atmega644 microcontroller. This repository will hold both hardware designs and software source code.
dirs:
schematics/ hardware information cat1/ OLD hardware test routines. Will be deleted when CAT-OS is finished cat-os/ 'scratchpad' OS. Being built out of code in the cat1 directory
LICENSE
All code is under GPL v2. See LICENSE file for details.
All code written by Mark Sherman, with a few exceptions:
'wait until' function taken from arduino-tvout: http://code.google.com/p/arduino-tvout/ (License: MIT License)
The 'general idea' of VGA generation from an AVR was taken from these resources: http://www.lucidscience.com/pro-vga%20video%20generator-1.aspx http://quinndunki.com/blondihacks/?p=955 http://avga.prometheus4.com/
Parts
51| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 0.1uF | Capacitors_ThroughHole:C_Disc_D3_P2.5 | C1, C2, C3, C4, C10 |
| 4 | 1uF | Capacitors_ThroughHole:C_Radial_D5_L11_P2.5 | C9, C11, C12, C13 |
| 4 | 470 | Discret:R1 | R5, R6, R7, R8 |
| 4 | MountingHole_3.5mm | Mounting_Holes:MountingHole_3.5mm | mh1, mh2, mh3, mh4 |
| 3 | 1k | Discret:R1 | R2, R3, R4 |
| 3 | 5k | Discret:R1 | R9, R10, R11 |
| 3 | D | Diodes_ThroughHole:Diode_DO-41_SOD81_Vertical_AnodeUp | D3, D4, D5 |
| 2 | 74LS244 | Housings_DIP:DIP-20_W7.62mm | U4, U8 |
| 1 | 0.01uF | Capacitors_ThroughHole:C_Disc_D3_P2.5 | C14 |
| 1 | 0.1 uF | Capacitors_ThroughHole:C_Disc_D3_P2.5 | C6 |
| 1 | 10k | Discret:R1 | R1 |
| 1 | 10uF | Capacitors_ThroughHole:C_Radial_D5_L11_P2.5 | C8 |
| 1 | 1N4001 | Diodes_ThroughHole:Diode_DO-41_SOD81_Vertical_AnodeUp | D1 |
| 1 | 2.2 uF | Discret:C1V8 | C7 |
| 1 | 470uF | Discret:C2V8 | C5 |
| 1 | 628128 | Housings_DIP:DIP-32_W15.24mm | U3 |
| 1 | 74LS573 | Housings_DIP:DIP-20_W7.62mm | U2 |
| 1 | 7805 | TO_SOT_Packages_THT:TO-220_Neutral123_Vertical | U5 |
| 1 | ATMEGA644-P | Housings_DIP:DIP-40_W15.24mm | U1 |
| 1 | AUD | Pin_Headers:Pin_Header_Angled_1x02 | P6 |
| 1 | ISP | Pin_Headers:Pin_Header_Angled_1x05 | P2 |
| 1 | LED | LEDs:LED-5MM | D2 |
| 1 | LF33 | TO_SOT_Packages_THT:TO-220_Neutral123_Vertical | U6 |
| 1 | MAX232 | Housings_DIP:DIP-16_W7.62mm | U7 |
| 1 | OSC 20MHz | Oscillators:KXO-200 | X1 |
| 1 | PS2 | Pin_Headers:Pin_Header_Angled_1x04 | P5 |
| 1 | PWR | Pin_Headers:Pin_Header_Angled_1x02 | P1 |
| 1 | SD | Pin_Headers:Pin_Header_Angled_1x06 | P4 |
| 1 | SER | Pin_Headers:Pin_Header_Angled_1x03 | P3 |
| 1 | VGA | Pin_Headers:Pin_Header_Angled_1x06 | P7 |
The 50 most common of 51 parts.
Questions
How big is the Cat644 PCB?
It measures 101.6 × 76.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Cat644 use?
51 parts, built around the ATMEGA644PA-AU, MAX232N and 74LS573PC. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Cat644 KiCad files?
From the carangil/cat644 repository on GitHub, at the commit this page was made from: the board is kicad/cat644.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Cat644 design in my own project?
Its repository publishes it under the GPL-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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