Timer / counter (555 etc.)
clk.timer
BOM rule hits · not reviewed — A hit means a BOM line matched this category's rules (ruleset 1.0.1+12960cbec977). It is a lead to read, not a located or reviewed circuit; several lines in one category are not several circuits.
Selection parameter template (suggestion)
What one usually states when choosing a circuit of this kind — not the parameters of any design or module listed here, and never a filter.
| Parameter | Suggested range or common values | Where it comes from |
|---|---|---|
| Frequency (MHz)Decisive | 0.033 to 200 MHz | Inherited from Clocks and timing |
| Frequency accuracy (ppm)Decisive | 1 to 50 ppm | Inherited from Clocks and timing |
| Output typeImportant | Passive crystalCMOSLVDSLVPECLSine wave | Inherited from Clocks and timing |
| Operating voltage (V)For reference | 1.8 to 5 V | Inherited from Clocks and timing |
Template version 1.0.1+3e52bcb40ed6 (separate from the rules)
Design files with a hit (98)
- 8bit-cpu - mk1-mainboard
BOM013272 · mk1-mainboard-027a603
BOM · 61 lineskicad316 starsProject type: 嵌入式系统
Key parts: 74HCT32, NE555, 74HCT04
Function hits: Timer / counter (555 etc.), 7-segment / LED matrix driver, Rotary encoder / potentiometer / joystick
Why it matched Timer / counter (555 etc.): U3,U6,U7,U33Licence MIT — as the catalogue declares it, not verified
- RC6502-Apple-1-Replica - apple-1-sbc
BOM013279 · apple-1-sbc-a13002e
BOM · 32 lineskicad193 starsProject type: 嵌入式系统
Key parts: HM62256BLP-7, 74HCT138, 28C256
Function hits: Timer / counter (555 etc.), Decoder / data selector, Logic gate / inverter / Schmitt trigger
Why it matched Timer / counter (555 etc.): U6Licence GPL-3.0及MCP23S17软件库BSD声明 — as the catalogue declares it, not verified
- RC6502-Apple-1-Replica - reset-clock
BOM013284 · reset-clock-a13002e
BOM · 14 lineskicad193 starsProject type: 接口转换及调试器
Key parts: NE555, 74HCT04, 74HCT74
Function hits: Timer / counter (555 etc.), Logic gate / inverter / Schmitt trigger, Shift register / latch / flip-flop
Why it matched Timer / counter (555 etc.): U1Licence GPL-3.0及MCP23S17软件库BSD声明 — as the catalogue declares it, not verified
- Ventilator - ventilator
BOM014324 · ventilator-6165c82d
BOM · 127 lineskicad169 starsProject type: 接口转换及调试器
Key parts: TPS54561, LD39050PU33R, STM32L496VGT
Function hits: Instrumentation / difference amplifier, Timer / counter (555 etc.), Analog-to-digital converter (ADC)
Why it matched Timer / counter (555 etc.): U6,U7Licence Apache — as the catalogue declares it, not verified
- carver_x5 - ADC-V2模拟接口板
BOM013488 · carver-adc-f829e59
BOM · 13 lineskicad135 starsProject type: 模拟信号处理链路
Key parts: TLC555, LM358
Function hits: Operational amplifier, Timer / counter (555 etc.), Rotary encoder / potentiometer / joystick
Why it matched Timer / counter (555 etc.): U1Licence CC-BY-SA-4.0 — as the catalogue declares it, not verified
- lm80c - lm80c-r6
BOM014472 · lm80c-r6-f8565c36
BOM · 68 lineskicad123 starsProject type: 接口转换及调试器
Key parts: 74HCT139, 74HCT138, ATmega328P-PU
Function hits: Audio power amplifier, Timer / counter (555 etc.), Bus buffer / transceiver
Why it matched Timer / counter (555 etc.): U25Licence GNU — as the catalogue declares it, not verified
- otterscreenadapter - otterscreen
BOM014543 · otterscreen-efadd7f7
BOM · 19 lineskicad68 starsProject type: 接口转换及调试器
Key parts: NE555, TPS61160A, AMS1117-3.3
Function hits: Timer / counter (555 etc.), Boost regulator, LED driver
Why it matched Timer / counter (555 etc.): U2Licence GNU — as the catalogue declares it, not verified
- spork-8 - 手动与555时钟板
BOM013691 · spork-clock-ff948f9
BOM · 16 lineskicad61 starsProject type: 嵌入式系统
Key parts: 74HC02, 74HC32, 74HC08
Function hits: Timer / counter (555 etc.), Rotary encoder / potentiometer / joystick, Logic gate / inverter / Schmitt trigger
Why it matched Timer / counter (555 etc.): U5,U7Licence MIT — as the catalogue declares it, not verified
- fsae - tsal-drv
BOM014589 · tsal-drv-3afdc0aa
BOM · 18 lineskicad59 starsProject type: 接口转换及调试器
Key parts: NE555, AMS1117-5.0, 74LVC1G17
Function hits: Timer / counter (555 etc.), Logic gate / inverter / Schmitt trigger, Low-dropout regulator (LDO)
Why it matched Timer / counter (555 etc.): U1Licence MIT — as the catalogue declares it, not verified
- fsae - tsalv3
BOM014587 · tsalv3-3afdc0aa
BOM · 27 lineskicad59 starsProject type: 接口转换及调试器
Key parts: SPAN02A-12, LM311, 4N35
Function hits: Comparator, Timer / counter (555 etc.), Optocoupler isolation
Why it matched Timer / counter (555 etc.): U4Licence MIT — as the catalogue declares it, not verified
- backbit-opensource - GenAssister手柄切换板
BOM013720 · backbit-genassister-8ce6e29
BOM · 16 lineskicad41 starsProject type: 接口转换及调试器
Key parts: ATF1502AS, SW_DP3T, NE555D
Function hits: Timer / counter (555 etc.), Small programmable logic (GAL / GreenPAK), FPGA / CPLD
Why it matched Timer / counter (555 etc.): U3Licence GPL-3.0 — as the catalogue declares it, not verified
- pi485 - pi485
BOM014659 · pi485-56a1a36a
BOM · 24 lineskicad41 starsProject type: 接口转换及调试器
Key parts: NE555, MAX485
Function hits: Timer / counter (555 etc.), RS-485 / RS-422
Why it matched Timer / counter (555 etc.): U1Licence MIT — as the catalogue declares it, not verified
- strachey - control-board
BOM014819 · control-board-2157c4af
BOM · 19 lineskicad25 starsProject type: 接口转换及调试器
Key parts: LM555N, TL084P, 74HC595N
Function hits: Operational amplifier, Timer / counter (555 etc.), Shift register / latch / flip-flop
Why it matched Timer / counter (555 etc.): IC1Licence CC — as the catalogue declares it, not verified
- miniadsr - miniadsr-1-0-1
BOM014926 · miniadsr-1-0-1-f88081a5
BOM · 26 lineskicad21 starsProject type: 接口转换及调试器
Key parts: LM555xN, TL072
Function hits: Operational amplifier, Timer / counter (555 etc.), Rotary encoder / potentiometer / joystick
Why it matched Timer / counter (555 etc.): U1Licence MIT — as the catalogue declares it, not verified
- miniadsr - miniadsr-1-1
BOM014925 · miniadsr-1-1-f88081a5
BOM · 28 lineskicad21 starsProject type: 接口转换及调试器
Key parts: LM555xN, TL072
Function hits: Operational amplifier, Timer / counter (555 etc.), Rotary encoder / potentiometer / joystick
Why it matched Timer / counter (555 etc.): U1Licence MIT — as the catalogue declares it, not verified
- BeeHive - 12-24-boost-converter
BOM014262 · 12-24-boost-converter-a7bbd36c
BOM · 12 lineskicad13 starsProject type: 接口转换及调试器
Key parts: LM555xM
Function hits: Timer / counter (555 etc.)
Why it matched Timer / counter (555 etc.): U1Licence MIT — as the catalogue declares it, not verified
- micro-pico - micro-pico
BOM015434 · micro-pico-db0dd1ef
BOM · 69 lineskicad11 starsProject type: 接口转换及调试器
Key parts: SSI2130, TL072, SSI2162
Function hits: Operational amplifier, VCA / OTA / analog multiplier, Analog switch / multiplexer
Why it matched Timer / counter (555 etc.): U13,U16Licence CC-BY-4.0(原仓库 — as the catalogue declares it, not verified
- sap-smd - SAP数码显示输出板
BOM013662 · sap-output-register-c7d2551
BOM · 20 lineskicad2 starsProject type: 人机接口HMI
Key parts: 74HC00, 74HC139, 74HC273
Function hits: Timer / counter (555 etc.), Counter / divider, Decoder / data selector
Why it matched Timer / counter (555 etc.): U8Licence CERN-OHL-S-2.0 — as the catalogue declares it, not verified
- sap-smd - SAP时钟与单步控制板
BOM013658 · sap-clock-c7d2551
BOM · 40 lineskicad2 starsProject type: 嵌入式系统
Key parts: SE555, 74HC00, 74HC14
Function hits: Timer / counter (555 etc.), Rotary encoder / potentiometer / joystick, Counter / divider
Why it matched Timer / counter (555 etc.): U1,U9Licence CERN-OHL-S-2.0 — as the catalogue declares it, not verified
- 2025-communicator_badge
BOM008898 · communicator_front
BOM · 7 lineskicadProject type: 嵌入式系统
Key parts: ICM7555xB
Function hits: Timer / counter (555 etc.)
Why it matched Timer / counter (555 etc.): U1Licence not stated in the catalogue
- acccs
BOM006933 · PWM_PCB
BOM · 37 lineskicadProject type: 测试测量仪器
Key parts: TLC555CP, LM6132BIN/NOPB, MCP23008-xP
Function hits: Operational amplifier, Timer / counter (555 etc.), Rotary encoder / potentiometer / joystick
Why it matched Timer / counter (555 etc.): U1Licence not stated in the catalogue
- Ace-2019
BOM007520 · ACEDIAGBOARD
BOM · 26 lineskicadProject type: 嵌入式系统
Key parts: NE555P, 74LS00, 74LS74
Function hits: Timer / counter (555 etc.), Bus buffer / transceiver, Logic gate / inverter / Schmitt trigger
Why it matched Timer / counter (555 etc.): U1Licence not stated in the catalogue
- Adafruit 555 PWM
BOM003536 · V1.0
BOM · 37 lineskicadProject type: 智能硬件
Key parts: 74HC1G04, MIC5225-5.0, TLC555
Function hits: Timer / counter (555 etc.), Rotary encoder / potentiometer / joystick, Logic gate / inverter / Schmitt trigger
Why it matched Timer / counter (555 etc.): IC1Licence not stated in the catalogue
- aiometer
BOM010701 · Aiometer-current
BOM · 19 lineskicadProject type: ESP
Key parts: NE555, TBD62783A, PCF8574
Function hits: Real-time clock (RTC), Timer / counter (555 etc.), Rotary encoder / potentiometer / joystick
Why it matched Timer / counter (555 etc.): U1Licence not stated in the catalogue