SPRUIU1C July 2020 – February 2024 DRA821U , DRA821U-Q1
The MEP logic is capable of placing an edge in one of 255 (8 bits) discrete time steps, each of which has a time resolution on the order of 150 ps. The MEP works with the TBM (Time-Base Module) and CCM (Counter-Compare Module) registers to be certain that time steps are optimally applied and that edge placement accuracy is maintained over a wide range of PWM frequencies, system clock frequencies and other operating conditions. Table 12-5078 shows the typical range of operating frequencies supported by the HRPWM.
System (MHz) | MEP Steps Per FICLK(1) (2) (3) | PWM Minimum (Hz) (4) | PWM Maximum (MHz) | Resolution at Maximum (Bits) (5) |
---|---|---|---|---|
50.0 | 111 | 763 | 2.50 | 11.1 |
60.0 | 93 | 916 | 3.00 | 10.9 |
70.0 | 79 | 1068 | 3.50 | 10.6 |
80.0 | 69 | 1221 | 4.00 | 10.4 |
90.0 | 62 | 1373 | 4.50 | 10.3 |
100.0 | 56 | 1526 | 5.00 | 10.1 |