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Table 2. CPU Cycles for MIN Implementation Executing from ROM, RAM, and FLASH (continued)
CPU Cycles Executed From
Function Name Min Average Max ROM RAM FLASH
Ctrl_run ✓ ✓ ✓
R
s
Online Disabled, ISR vs CTRL = 1, CTRL vs EST = 1 2320 2331 2413
CTRL vs EST = 2 1131 1735 2413
CTRL vs EST = 3 1154 1536 2413
ISR vs CTRL = 2, CTRL vs EST = 1 51 1191 2413
CTRL vs EST = 2 51 893 2413
CTRL vs EST = 3 51 793 2413
ISR vs CTRL = 3, CTRL vs EST = 1 51 811 2413
CTRL vs EST = 2 51 612 2413
CTRL vs EST = 3 51 544 2413
R
s
Online Enabled, ISR vs CTRL = 1, CTRL vs EST = 1 2766 2781 2882
CTRL vs EST = 2 1129 1969 2882
CTRL vs EST = 3 1129 1692 2882
ISR vs CTRL = 2, CTRL vs EST = 1 51 1424 2882
CTRL vs EST = 2 51 1010 2882
CTRL vs EST = 3 51 871 2882
ISR vs CTRL = 3, CTRL vs EST = 1 51 966 2882
CTRL vs EST = 2 51 689 2882
CTRL vs EST = 3 51 596 2882
DRV_writePwmData 110 110 110 × ✓ ×
CTRL_setup 26 36 188 × ✓ ✓
Table 3. Table 3. CPU loading for MIN Implementation Executing from ROM, RAM, and FLASH
2802xF CPU = 60 MHz
Available MIPs = 60 MIPs MIPS Available
PWM = 15 kHz CPU Utilization [%] MIPs Used [MIPS] [MIPS]
R
s
Online Disabled, ISR vs CTRL = 1, CTRL vs EST = 1 64.7 38.82 21.18
CTRL vs EST = 2 49.8 29.88 30.12
CTRL vs EST = 3 44.83 26.9 33.11
ISR vs CTRL = 2, CTRL vs EST = 1 36.2 21.72 38.28
CTRL vs EST = 2 28.75 17.25 42.75
CTRL vs EST = 3 26.25 15.75 44.25
ISR vs CTRL = 3, CTRL vs EST = 1 26.7 16.02 43.98
CTRL vs EST = 2 21.73 13.04 46.97
CTRL vs EST = 3 20.03 12.02 47.99
R
s
Online Enabled, ISR vs CTRL = 1, CTRL vs EST = 1 75.95 45.57 14.43
CTRL vs EST = 2 55.65 33.39 26.61
CTRL vs EST = 3 48.73 29.24 30.77
ISR vs CTRL = 2, CTRL vs EST = 1 42.03 25.22 34.79
CTRL vs EST = 2 31.68 19.01 41
CTRL vs EST = 3 28.2 16.92 43.08
ISR vs CTRL = 3, CTRL vs EST = 1 30.58 18.35 41.66
CTRL vs EST = 2 23.65 14.19 45.81
CTRL vs EST = 3 21.33 12.8 47.21
14
TMS320F28026F, TMS320F28027F InstaSPIN™-FOC Software SPRUHP4–August 2013
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