© 2024 EasyEDA Some rights reserved ISO/IEC
Editor Version
×
Standard
1.Easy to use and quick to get started
2.The process supports design scales of 300 devices or 1000 pads
3.Supports simple circuit simulation
4.For students, teachers, creators
Profession
1.Brand new interactions and interfaces
2.Smooth support for design sizes of over 5,000 devices or 10,000 pads
3.More rigorous design constraints, more standardized processes
4.For enterprises, more professional users
Ongoing
STD mcp23017 extender
License: CC-BY-NC-SA 3.0
Mode: Editors' pick
- 1
Update time：
2021-07-06 12:30:07
Creation time：
2018-12-22 09:59:29
Description
=I2C GPIO extender=
Test implementation (SHOULD be enhanced/optimized) for 12 non-isolated and 4 isolated hardware de-bounced inputs for my OrangePi-Zero 'pseudo PLC'.
Can be used as dedicated I2C extender with single hardware IRQ line with possible any I2C capable controller. Included level shifting circuit make it compatible with 3.3V MCUs.
Design Drawing
schematic diagram
（
1
/
）
PCB
（
1
/
）
The preview image was not generated, please save it again in the
editor.
| ID | Name | Designator | Footprint | Quantity | Mounted | |
|---|---|---|---|---|---|---|
| 1 | XC6206P332MR | U1 | SOT-23(SOT-23-3) | 1 | Yes | C5446 |
| 2 | 1u | C2,C3,C6,C7,C8,C9,C4,C5,C10,C11,C14,C15,C16,C17,C20,C21,C12,C13 | 0805 | 18 | Yes | |
| 3 | BSS138 | Q2,Q1 | SOT-23-3 | 2 | Yes | C78284 |
| 4 | 10k | R2,R4,R1,R3,R56,R49,R50,R51 | 0805 | 8 | Yes | |
| 5 | 0.01 | C1 | 0805 | 1 | Yes | |
| 6 | MCP23017-E/SO | U4 | SOIC-28_300MIL | 1 | Yes | C47023 |
| 7 | 3k3 | R7,R21,R8,R22,R9,R23,R10,R24,R5,R19,R6,R20,R11,R27,R12,R28,R33,R41,R34,R42,R31,R39,R32,R40 | 0805 | 24 | Yes | |
| 8 | 33k | R15,R16,R17,R18,R13,R14,R25,R26,R37,R38,R43,R44,R52,R53,R35,R36 | 0805 | 16 | Yes | |
| 9 | 5.1V | D5,D6,D7,D8,D3,D4,D9,D10,D13,D14,D11,D12 | MELF | 12 | Yes | ZM4733A |
| 10 | EL357N | U2,U3,U5,U6 | SOP-4_P2.54 | 4 | Yes | C142286 |
| 11 | 1N4448 | D15,D16,D17,D18 | LL34 | 4 | Yes | C54037 |
| 12 | 1k* | R29,R30,R47,R48 | 1206 | 4 | Yes | |
| 13 | 470 | R45,R46,R54,R55 | 0805 | 4 | Yes | |
| 14 | 0.1 | C18,C19 | 0805 | 2 | Yes | |
| 15 | PRTR5V0U2X,215 | D1,D2 | SOT-143 | 2 | Yes | C12333 |
| 16 | 0 | J3,J2,J1 | 0603 | 3 | No | |
| 17 | DA250-350 | X1,X3 | DA250-350-5 | 2 | Yes | DA250-350-5 |
| 18 | DA250-350 | X2 | DA250R-350-5 | 1 | Yes | |
| 19 | DA250-250 | X4 | DA250-350-8 | 1 | Yes | C27438 |
| 20 | BAT54S | D19 | SOT-23(SOT-23-3) | 1 | Yes | C83935 |
| 21 | DA250-350 | X5 | DA250R-350-8 | 1 | Yes |
Unfold
Project Members
0
1
Collect to album
Related Projects
Change a batch
Loading...
Add to album
×
Loading...
reminder
×
Do you need to add this project to the album?