W741L250 Datasheet, PDF (60/86 Pages) Winbond – 4-BIT MICROCONTROLLER

W741L250
Instruction Set Table 2, continued
MOV MFP, #I
Modulation Frequency Pulse generator
Machine Code:
0001001 0
I7 I6 I5 I4 I3 I2 I1 I0
Machine Cycle:
Operation:
Description:
1
[MFP] ← I
If the bit 2 of MR1 is "0," the waveform specified by I7 to I0 is delivered at
the MFP output pin (MFP). The relation between the waveform and
immediate data I areas follows:
I5~I0 I0 = 1 I1 = 1 I2 = 1 I3 = 1 I4 = 1 I5 = 1
Signal
Fosc
256
Fosc
512
Fosc
4096
Fosc Fosc Fosc
8192 16384 32768
I7
I6
Signal
0
0
Low
0
1
High
1
0
Fosc/16
1
1
Fosc/8
MOV MR0, #I
Machine Code:
Load immediate data to Mode Register 0 (MR0)
00010011
1 0 0 0 I3 I2 I1 I0
Machine Cycle:
Operation:
Description:
1
MR0 ← I
The immediate data I are loaded to the MR0.
MR0 bits description:
bit 0 ^{= 0 The fundamental frequency of Timer 0 is Fosc/4}
= 1 The fundamental frequency of Timer 0 is Fosc/1024
bit 1 Reserved
bit 2 Reserved
bit 3
= 0 Timer 0 stop down-counting
= 1 Timer 0 start down-counting
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