SPNS254A June 2022 – March 2024 TMS570LC4357-SEP
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
PARAMETER | TEST CONDITIONS | MIN | MAX | UNIT | |
---|---|---|---|---|---|
fOSC | OSC - oscillator clock frequency using an external crystal | 5 | 20 | MHz | |
fGCLK1 | GCLK - R5F CPU clock frequency | 300 | MHz | ||
fGCLK2 | GCLK - R5F CPU clock frequency | 300 | MHz | ||
fHCLK | HCLK - System clock frequency | 150 | MHz | ||
fVCLK | VCLK - Primary peripheral clock frequency | 110 | MHz | ||
fVCLK2 | VCLK2 - Secondary peripheral clock frequency | 110 | MHz | ||
fVCLK3 | VCLK3 - Secondary peripheral clock frequency | 150 | MHz | ||
fVCLKA1 | VCLKA1 - Primary asynchronous peripheral clock frequency | 110 | MHz | ||
fVCLKA2 | VCLKA2 - Secondary asynchronous peripheral clock frequency | 110 | MHz | ||
fVCLKA4 | VCLKA4 - Secondary asynchronous peripheral clock frequency | 110 | MHz | ||
fRTICLK1 | RTICLK1 - clock frequency | fVCLK | MHz | ||
fPROG/ERASE | System clock frequency - flash programming/erase | fHCLK | MHz | ||
fECLK1 | External Clock 1 | 110 | MHz | ||
fECLK2 | External Clock 2 | 110 | MHz | ||
fETMCLKOUT | ETM trace clock output | 55 | MHz | ||
fETMCLKIN | ETM trace clock input | 110 | MHz | ||
fEXTCLKIN1 | External input clock 1 | 110 | MHz | ||
fEXTCLKIN2 | External input clock 2 | 110 | MHz |
Table 6-2 lists the maximum frequency of the CPU (GLKx), the level-2 memory (HCLK) and the peripheral clocks (VCLKx). It is not always possible to run each clock at its maximum frequency as GCLK must be an integral multiple of HCLK and HCLK must be an integral multiple of VCLKx. Depending on the system, the optimum performance may be obtained by maximizing either the CPU frequency, the level-two RAM interface, the level-two flash interface, or the peripherals.