Clocks and timing
clk
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.
Narrower categories
Crystal / oscillatorReal-time clock (RTC)Clock generator / PLL / bufferTimer / counter (555 etc.)
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 | This category's own |
| Frequency accuracy (ppm)Decisive | 1 to 50 ppm | This category's own |
| Output typeImportant | Passive crystalCMOSLVDSLVPECLSine wave | This category's own |
| Operating voltage (V)For reference | 1.8 to 5 V | This category's own |
Template version 1.0.1+3e52bcb40ed6 (separate from the rules)
Design files with a hit (2546)
- zxuno1010-board - zxuno1010
BOM014887 · zxuno1010-52e999df
BOM · 69 lineskicad23 starsProject type: 接口转换及调试器
Key parts: ESP-12F, IS61WV20488BLL-10, XC6SLX9-TQG144
Function hits: Operational amplifier, Audio decode / playback / audio DSP, Real-time clock (RTC)
Why it matched Real-time clock (RTC): U12 · Crystal / oscillator: Y1,Y2,Y3,Y4,X1Licence MIT — as the catalogue declares it, not verified
- CC1312R7 面向 SimpleLink™ 多标准无线 MCU 的 LaunchPad™ 开发套件
BOM000467 · v1.0
BOM · 119 lineskicadProject type: TI
Key parts: IC_LOGIC_SN74LVC2G74_VSSOP8_SOP50P310X90-8N_IC_SN74LVC2G74DCU_SOP50P310X90-8L,SOP50P310X90-8M, IC_REF_REF6025_VSSOP8_SOP65P490X110-8A2N_IC_REF6025IDGK_SOP65P490X110-8A2L,SOP65P490X110-8A2M, IC_OPAMP_OPA320_SOT23-5_SOT95P280X145-5A2N_IC_OPA320AIDBV_SOT95P280X145-5A2L,SOT95P280X145-5A2M
Function hits: Crystal / oscillator, Buttons / switches, Debug / programming header
Why it matched Crystal / oscillator: Y4,Y1,Y3,Y2,Y5,Y6Licence not stated in the catalogue
- mist1010-board
BOM009116 · main-revA2
BOM · 76 lineskicadProject type: FPGA开发板
Key parts: MT48LC16M16A2, AT91SAM7S256-AU, EP3C25E144
Function hits: Real-time clock (RTC), FPGA / CPLD, 8-bit MCU (AVR / PIC / 8051 / STM8)
Why it matched Real-time clock (RTC): U7 · Crystal / oscillator: Y1,Y2,Y3,X1,X2Licence not stated in the catalogue
- mist1010-board
BOM009118 · main-revA
BOM · 77 lineskicadProject type: FPGA开发板
Key parts: MT48LC16M16A2, AT91SAM7S256-AU, EP3C25E144
Function hits: Real-time clock (RTC), FPGA / CPLD, 8-bit MCU (AVR / PIC / 8051 / STM8)
Why it matched Real-time clock (RTC): U7 · Crystal / oscillator: Y1,Y2,Y3,X1,X2Licence not stated in the catalogue
- mist1010-board
BOM009119 · main-revA1
BOM · 75 lineskicadProject type: FPGA开发板
Key parts: MT48LC16M16A2, AT91SAM7S256-AU, EP3C25E144
Function hits: Real-time clock (RTC), FPGA / CPLD, 8-bit MCU (AVR / PIC / 8051 / STM8)
Why it matched Real-time clock (RTC): U7 · Crystal / oscillator: Y1,Y2,Y3,X1,X2Licence not stated in the catalogue
- zxuno1010-board
BOM006548 · rev.B 主板
BOM · 67 lineskicadProject type: FPGA开发板
Key parts: ESP-12E, IS61WV20488BLL-10, XC6SLX9-TQG144
Function hits: Operational amplifier, Audio decode / playback / audio DSP, Real-time clock (RTC)
Why it matched Real-time clock (RTC): U12 · Crystal / oscillator: Y1,Y2,Y3,Y4,X1Licence not stated in the catalogue
- zxuno1010-board
BOM006550 · rev.D1 主板
BOM · 69 lineskicadProject type: FPGA开发板
Key parts: ESP-12F, IS61WV20488BLL-10, XC6SLX9-TQG144
Function hits: Operational amplifier, Audio decode / playback / audio DSP, Real-time clock (RTC)
Why it matched Real-time clock (RTC): U12 · Crystal / oscillator: Y1,Y2,Y3,Y4,X1Licence not stated in the catalogue
- zxuno1010-board
BOM006551 · rev.D 主板
BOM · 70 lineskicadProject type: FPGA开发板
Key parts: ESP-12E, IS61WV20488BLL-10, XC6SLX9-TQG144
Function hits: Operational amplifier, Audio decode / playback / audio DSP, Real-time clock (RTC)
Why it matched Real-time clock (RTC): U12 · Crystal / oscillator: Y1,Y2,Y3,Y4,X1Licence not stated in the catalogue
- zxuno1010-board
BOM006551 · rev.C 主板
BOM · 69 lineskicadProject type: FPGA开发板
Key parts: ESP-12E, IS61WV20488BLL-10, XC6SLX9-TQG144
Function hits: Operational amplifier, Audio decode / playback / audio DSP, Real-time clock (RTC)
Why it matched Real-time clock (RTC): U12 · Crystal / oscillator: Y1,Y2,Y3,Y4,X1Licence not stated in the catalogue
- pc-kharon-386 - 386主板Rev.A1
BOM013899 · kharon386-main-a1-83f08c6
BOM · 78 lineskicad114 starsProject type: 嵌入式系统
Key parts: LMR62014, MAX809LEUR, M6117D
Function hits: Decoder / data selector, Logic gate / inverter / Schmitt trigger, Wireless SoC / wireless module
Why it matched Crystal / oscillator: Y1,Y2,X1,X2,X3Licence CC — as the catalogue declares it, not verified
- deck65
BOM009453 · Deck65-current
BOM · 58 lineskicadProject type: 嵌入式系统
Key parts: AMS1117, 74HC14, ATF16V8B-15PU
Function hits: Current-sense amplifier, Digital potentiometer / programmable gain, Real-time clock (RTC)
Why it matched Real-time clock (RTC): U7 · Crystal / oscillator: Y1,Y2,X1,X2Licence not stated in the catalogue
- FullMega
BOM001526 · v1.0
BOM · 47 lineskicadProject type: 嵌入式系统
Key parts: CP2104, ATMEGA2560-16AU, AP1117-50
Function hits: 8-bit MCU (AVR / PIC / 8051 / STM8), Low-dropout regulator (LDO), USB to serial
Why it matched Crystal / oscillator: Y1,X2,X3,X1,Y2Licence not stated in the catalogue
- gecko5education
BOM009429 · GECKO5Education
BOM · 57 lineskicadProject type: FPGA开发板
Key parts: FT2232HQ, TFP410PAP, 74HC154BQ,118
Function hits: Real-time clock (RTC), Analog-to-digital converter (ADC), Digital-to-analog converter (DAC)
Why it matched Real-time clock (RTC): U18 · Crystal / oscillator: Y1,X1,X2,X4Licence not stated in the catalogue
- maxi030
BOM009148 · MAXI030-mainboard
BOM · 65 lineskicadProject type: 嵌入式系统
Key parts: EPC2, SC26C94, MAX238
Function hits: Real-time clock (RTC), Bus buffer / transceiver, Logic gate / inverter / Schmitt trigger
Why it matched Real-time clock (RTC): U18 · Crystal / oscillator: Y1,Y2,Y3,X1Licence not stated in the catalogue
- MIMXRT1170-EVK
BOM001628 · v1.0
BOM · 239 lineskicadProject type: NXP
Key parts: LM1117_FXD_SOT223_IC_1.8MM_315-, W9825G6KH_54P_TSOPII_54_IC_1.2M, SN74AVC8T245_TSSOP24_65MM_IC_1.
Function hits: Analog switch / multiplexer, Audio codec, Logic gate / inverter / Schmitt trigger
Why it matched Crystal / oscillator: Y5,Y6,Y1,Y4,X1,X6Licence not stated in the catalogue
- MIMXRT1170-EVKB
BOM001805 · v1.0
BOM · 239 lineskicadProject type: NXP
Key parts: 74AVC4TD245BQ_DHVQFN16_DHVQFN16, NX3L1G53GT_8P_XSON_8P_IC_0.5MM_, UM1550S_3P_SOT23-3-1P95_IC_1.4M
Function hits: Analog switch / multiplexer, Audio codec, Logic gate / inverter / Schmitt trigger
Why it matched Crystal / oscillator: X1,X6,Y4,Y1,Y6,Y5Licence not stated in the catalogue
- mist1010-board
BOM009117 · main-revB
BOM · 79 lineskicadProject type: FPGA开发板
Key parts: MT48LC16M16A2, AT91SAM7S256-AU, EP3C25E144
Function hits: Real-time clock (RTC), Optocoupler isolation, Logic gate / inverter / Schmitt trigger
Why it matched Real-time clock (RTC): U7 · Crystal / oscillator: Y1,Y2,X1,X2Licence not stated in the catalogue
- mist1010-board
BOM009120 · main-revC
BOM · 75 lineskicadProject type: FPGA开发板
Key parts: MT48LC16M16A2, AT91SAM7S256-AU, EP3C25E144
Function hits: Real-time clock (RTC), Optocoupler isolation, Logic gate / inverter / Schmitt trigger
Why it matched Real-time clock (RTC): U7 · Crystal / oscillator: Y1,Y2,X1,X2Licence not stated in the catalogue
- mist1010-board
BOM009121 · main-revC1
BOM · 75 lineskicadProject type: FPGA开发板
Key parts: MT48LC16M16A2, AT91SAM7S256-AU, EP3C25E144
Function hits: Real-time clock (RTC), Optocoupler isolation, Logic gate / inverter / Schmitt trigger
Why it matched Real-time clock (RTC): U7 · Crystal / oscillator: Y1,Y2,X1,X2Licence not stated in the catalogue
- MNT Reform Next
BOM000448 · v1.0
BOM · 94 lineskicadKey parts: reform2-som-connector, USB2514B_Bi, TS3USB30EDGSR
Function hits: Operational amplifier, Analog switch / multiplexer, Real-time clock (RTC)
Why it matched Crystal / oscillator: Y4,Y3,Y2,Y1 · Real-time clock (RTC): U6Licence not stated in the catalogue
- NTP based digital clock panel
BOM001209 · 1
BOM · 46 lineskicadKey parts: ENC28J60, ULN2803A, ATmega328-AU
Function hits: Real-time clock (RTC), 8-bit MCU (AVR / PIC / 8051 / STM8), Relay / load driver (ULN2003 / MOSFET driver)
Why it matched Crystal / oscillator: Y3,Y2,Y1 · Real-time clock (RTC): U3,U4Licence not stated in the catalogue
- pcie-pci-isa
BOM009364 · P5S533-ISA-mod
BOM · 317 lineskicadProject type: 接口转换及调试器
Key parts: SOIC_20P_26_256X252|ST75185, SOIC_14P_50_341X236|74HC132, BGA_505P_39_1063X1063|SIS964
Function hits: Comparator, Operational amplifier, Microphone / pickup
Why it matched Crystal / oscillator: X1,X5,X6,X7,X10Licence not stated in the catalogue
- pc-kharon-386
BOM008886 · Main-rev.A1
BOM · 78 lineskicadProject type: 嵌入式系统
Key parts: LMR62014, MAX809LEUR, M6117D
Function hits: Decoder / data selector, Logic gate / inverter / Schmitt trigger, Wireless SoC / wireless module
Why it matched Crystal / oscillator: Y1,Y2,X1,X2,X3Licence not stated in the catalogue
- pc-kharon-386
BOM008887 · Main-rev.A
BOM · 77 lineskicadProject type: 嵌入式系统
Key parts: LMR62014, MAX809LEUR, M6117D
Function hits: Decoder / data selector, Logic gate / inverter / Schmitt trigger, Wireless SoC / wireless module
Why it matched Crystal / oscillator: Y1,Y2,X1,X2,X3Licence not stated in the catalogue