deveopmen
Three-phase motor control timers
’
functions
Rev.B2 for proof reading
Mitsubishi Microcomputers
M32C/83 group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
156
Three-phase PWM control register 1
(Note 1)
b7
b6
b5
b4 b3
b2
b1
b0
Symbol
INVC1
Address
0309
16
When reset
00
16
Timer Ai start trigger signal
select bit
INV10
Bit symbol
Bit name
Description
R W
INV11
Timer A1-1, A2-1, A4-1
control bit
INV12
Dead time timer count
source select bit
INV14
Output polarity control bit
INV17
Waveform reflect timing
select bit
INV16
Dead time timer trigger
select bit
INV15
Dead time invalid bit
INV13
Carrier wave detect flag
0: Timer B2 overflow signal
1: Timer B2 overflow signal,
signal for writing to timer B2
0: Three-phase mode 0
1: Three-phase mode 1
0 : f
1
1 : f
1
/2
0: Rising edge of triangular waveform
1: Falling edge of triangular waveform
0 : Low active
1 : High active
0: Dead time valid bit
1: Dead time invalid bit
0: Triggers from corresponding timer
1: Rising edge of corresponding phase
output
0: Synchronized with raising edge of
triangular waveform
1: Synchronized with timer B2 overflow
(Note 4)
Note 1: Set bit 1 of the protect register (address 000A
16
) to
“
1
”
before writing to this register.
Note 2: INV13 is valid only in triangular waveform mode (INV06=0) and three-phase mode (INV11=1).
Note 3:Usually set to
“
1
”
.
Note 4:INV17 is valid only in three-phase mode 1.
Three-phase output buffer register i
(i=0, 1) (Note)
b7
b6 b5
b4
b3
b2
b1
b0
Symbol
IDBi (i=0,1)
Address
030A
16
, 030B
16
When reset
XX00 0000
2
Bit name
Function
Bit Symbol
W
R
Nothing is assigned.
When write, set
“
0
”
. When read, their contents are
“
0
”
.
DUi
DUBi
DVi
DWi
DVBi
DWBi
U phase output buffer i
Setting in U phase output buffer i
V phase output buffer i
W phase output buffer i
U phase output buffer i
V phase output buffer i
W phase output buffer i
Setting in V phase output buffer i
Setting in W phase output buffer i
Setting in W phase output buffer i
Setting in V phase output buffer i
Setting in U phase output buffer i
Note: When executing read instruction of this register, the contents of three-phase shift register is read out.
(Note 3)
(Note 2)
Figure 1.16.2. Registers related to timers for three-phase motor control