Difference between revisions of "LB-68B50-01"
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* SD card | * SD card | ||
| − | === Parallel Port === | + | === Parallel I/O Port === |
[[file:LB-68B50-01_MCP23008L.PNG]] | [[file:LB-68B50-01_MCP23008L.PNG]] | ||
| + | |||
| + | * 3.3V levels | ||
=== SD Card === | === SD Card === | ||
Revision as of 15:01, 19 August 2024
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Contents
Features
- Serial/Parallel I/O Card
- 68B50 UART
- 1.8432 MHz oscillator
- Baud Rate Clock (38.4k baud oscillator)
- XIAO RP2040 CPU
- USB/Serial
- 8-bit parallel port expander
- SD card
- 100x50mm card
Design
ACIA
- 68B50 UART
- Baud Rate Clock (38.4k baud oscillator)
XIAO RP2040 CPU
- USB/Serial
- Drive SPI I2C 8-bit parallel port expander
- SD card
Parallel I/O Port
- 3.3V levels
SD Card
- Need to not install level translators
- Need to shot across the SD card lines
Backplane
Mechanicals
Checkout
Rev 2
Rev 1
- Do not install level translator U3
- Short across the SD card lines
- Jumper U2-13 to U2-2
- Jumper U2-12 to U2-3
- Jumper U2-11 to U2-4
- Jumper U2-10 to U2-5
