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Differences between the specifications of FP0 compatibility mode and FP0
Basically, the FP0 programs do not need to be modified to activate the FP0 programs in the FP0
compatibility mode, however, as for the following items, the specifications are different. Check the
contents, and change the programs if necessary.
1. P13(PICWT) instruction specifications - EEPROM(FROM) write instruction
The execution time of this instruction differs. Depending on the number of write blocks, the execution
time may be longer or shorter.
No. of write blocks (No. of words)
2 blocks (128 words) Approx. 10ms Approx. 100ms
8 blocks (512 words) Approx. 40ms Approx. 100ms
32 blocks (2048 words) Approx. 160ms Approx. 100ms
41 blocks (2624 words) Approx. 205ms Approx. 200ms
96 blocks (6144 words) Approx. 480ms Approx. 300ms
2. F170(PWM) instruction specifications - PWM output instruction
The settable frequencies differ. Especially, the setting for the low frequency band cannot be specified.
Setting
H12 714 1.4 750 1.3
H14 400 2.5 400 2.5
H16 100 10.0 100 10
H1 19 52.6 20 50
H3 4.8 208.3 6 166.7
Cannot specify
(Error occurs)
H5 1.2 833.3
H7 0.3 3333.3