S6J3120 Datasheet, PDF (71/141 Pages) Cypress Semiconductor – This section explains the Cortex-R5 CPU core

− Guaranteed operation range
Internal operation clock frequency vs. Power supply voltage
S6J3120 Series
3.5
2
4
128
Internal clock frequency FCPU_CLK(MHz)
Note: A supply voltage that is equal to or less than the set voltage for low-voltage detection causes a reset.
Document Number: 002-04863 Rev.*D
Page 71 of 141