Lobster:Logic Shrimp v2
From DP
| Lobster:Logic Shrimp v2 | |
|---|---|
| Codename | Lobster |
| Status | [[Project status#|]] |
| Development | [ development forum] |
| ID # | {{{id}}} |
Contents |
Prototypes
Resources
Logic Shrimp v2b is an evolution of the Version 1. The circuit uses a single 23LC1024 SRAM instead of 4 x 23K256, it *Serial data lines (SD0 - SD3) are now bi-directional.
- Current hardware design files in our SVN (look for v2b)
- 23LC1024 SRAM product page
- 23LC1024 SRAM datasheet
Latest Schematic
Click for a full size schematic image. Schematic and PCB were designed with the freeware version of Cadsoft Eagle
Early Schematic
Latest PCB
Early PCB
Partlist
| Part | Quantity | Value | Package |
|---|---|---|---|
| C1,C3,C4,C5,C9 | 5 | 0.1uF | C0603 |
| C10 | 1 | 1uF | C0603 |
| C11,C12 | 2 | 10uF | SMC_A |
| EXT_CLK | 1 | pinheader | 1X01 |
| IC5 | 1 | PIC18F24J50 | SSOP28 |
| IC6 | 1 | 74LVC1G125 | SOT-23-5 |
| IC7 | 1 | 74AC573 | SOIC-20 |
| IC8 | 1 | 23LC1024 | SOIC-8 |
| ICSP | 1 | pinheader | 1X05 |
| INPUT,OUTPUT | 2 | pinheader | 1X05-S |
| LED1 | 1 | LED | LED-805 |
| LED2 | 1 | LED | LED-805
|
| Q2 | 1 | 20Mhz | OSCILLATOR_7X5_SMD |
| R1,R2 | 2 | 1.1K | R0603 |
| R3,R4 | 2 | 10K | R0603 |
| R5 | 1 | 1M | R0603
|
| USB | 1 | USBSMD | USB-MINIB |
| VR1 | 1 | Vreg 3.3V | SOT23-5 |
- Shopping cart at Mouser]
The latest sources and distributors are in the master partlist. See something missing? Please let us know.