SPRSP62C December 2022 – November 2025 TDA4AL-Q1 , TDA4VE-Q1 , TDA4VL-Q1
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
Figure 6-25 shows the recommended crystal circuit. All discrete components used to implement the oscillator circuit should be placed as close as possible to the WKUP_OSC0_XI and WKUP_OSC0_XO pins.
Figure 6-25 WKUP_OSC0
Crystal ImplementationThe crystal must be in the fundamental mode of operation and parallel resonant. Table 6-23 summarizes the required electrical constraints.
| PARAMETER | MIN | TYP | MAX | UNIT | |||
|---|---|---|---|---|---|---|---|
| Fxtal | Crystal Parallel Resonance Frequency | 19.2, 20, 24, 25, 26, 27 | MHz | ||||
| Fxtal | Crystal Frequency Stability and Tolerance | Ethernet RGMII and RMII not used | ±100 | ppm | |||
| Ethernet RGMII and RMII using derived clock | ±50 | ||||||
| CL1+PCBXI | Capacitance of CL1 + CPCBXI | 12 | 24 | pF | |||
| CL2+PCBXO | Capacitance of CL2 + CPCBXO | 12 | 24 | pF | |||
| CL | Crystal Load Capacitance | 6 | 12 | pF | |||
| Cshunt | Crystal Circuit Shunt Capacitance | 19.2 MHz, 20MHz |
ESRxtal ≤ 30 Ω | 7 | pF | ||
| 30 Ω < ESRxtal ≤ 80 Ω | 5 | pF | |||||
| 80 Ω < ESRxtal ≤ 100 Ω | 3 | pF | |||||
| 24MHz | ESRxtal ≤ 30 Ω | 7 | pF | ||||
| 30 Ω < ESRxtal ≤ 60 Ω | 5 | pF | |||||
| 60 Ω < ESRxtal ≤ 80 Ω | 3 | pF | |||||
| Not Supported: 80 Ω ≤ ESRxtal | – | ||||||
| 25MHz | ESRxtal ≤ 30 Ω | 7 | pF | ||||
| 30 Ω < ESRxtal ≤ 50 Ω | 5 | pF | |||||
| 50 Ω < ESRxtal ≤ 80 Ω | 3 | pF | |||||
| Not Supported: 80 Ω ≤ ESRxtal | – | ||||||
| 26 MHz, 27 MHz |
ESRxtal ≤ 30 Ω | 7 | pF | ||||
| 30 Ω < ESRxtal ≤ 50 Ω | 5 | pF | |||||
| Not Supported: 50 Ω ≤ ESRxtal | – | ||||||
| ESRxtal | Crystal Effective Series Resistance | (1) | Ω | ||||
When selecting a crystal, the system design must consider the temperature and aging characteristics of a based on the worst case environment and expected life expectancy of the system.
Table 6-24 details the switching characteristics of the oscillator and the requirements of the input clock.
| PARAMETER | PACKAGE | MIN | TYP | MAX | UNIT | |
|---|---|---|---|---|---|---|
| CXI | XI Capacitance | ALZ | 1.595 | pF | ||
| CXO | XO Capacitance | ALZ | 1.672 | pF | ||
| CXIXO | XI to XO Mutual Capacitance | ALZ | 0.01 | pF | ||
| ts | Start-up Time | 9.5(1) | ms | |||
Figure 6-26 WKUP_OSC0
Start-up Time