License

CC-BY-NC-SA 3.0

Recommend Projects

mcp23017 extender

1 year ago 515
  • Description
  • Documents
  • BOM
  • Attachments
  • Members
  • Comments

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.

Documents

GPIO_IN

DI_PCB

BOM

ID Designator Footprint Quantity Mounted
1 U1 SOT-23(SOT-23-3) 1 Yes C5446
2 C2,C3,C6,C7,C8,C9,C4,C5,C10,C11,C14,C15,C16,C17,C20,C21,C12,C13 0805 18 Yes
3 Q2,Q1 SOT-23-3 2 Yes C78284
4 R2,R4,R1,R3,R56,R49,R50,R51 0805 8 Yes
5 C1 0805 1 Yes
6 U4 SOIC-28_300MIL 1 Yes C47023
7 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 R15,R16,R17,R18,R13,R14,R25,R26,R37,R38,R43,R44,R52,R53,R35,R36 0805 16 Yes
9 D5,D6,D7,D8,D3,D4,D9,D10,D13,D14,D11,D12 MELF 12 Yes ZM4733A
10 U2,U3,U5,U6 SOP-4_P2.54 4 Yes C142286
11 D15,D16,D17,D18 LL34 4 Yes C54037
12 R29,R30,R47,R48 1206 4 Yes
13 R45,R46,R54,R55 0805 4 Yes
14 C18,C19 0805 2 Yes
15 D1,D2 SOT-143 2 Yes C12333
16 J3,J2,J1 0603 3 No
17 X1,X3 DA250-350-5 2 Yes DA250-350-5
18 X2 DA250R-350-5 1 Yes
19 X4 DA250-350-8 1 Yes C27438
20 D19 SOT-23(SOT-23-3) 1 Yes C83935
21 X5 DA250R-350-8 1 Yes

Attachments

None

Members

Success
The owner does not allow comments in this project now

Comments (0)

goToTop
你现在访问的是EasyEDA海外版,使用建立访问速度更快的国内版 https://lceda.cn(需要重新注册)
如果需要转移工程请在个人中心 - 工程 - 工程高级设置 - 下载工程,下载后在https://lceda.cn/editor 打开保存即可。
有问题联系QQ 3001956291 不再提醒
svg-battery svg-battery-wifi svg-books svg-more svg-paste svg-pencil svg-plant svg-ruler svg-share svg-user svg-logo-cn svg-double-arrow
We use cookies to offer you a better experience. Detailed information on the use of cookies on this website is provided in our Privacy Policy. By using this site, you consent to the use of our cookies.