Datasheet

12. Timer
page 117
923fo7002,51.beF00.2.veR
0020-2020B90JER
)T62/C61M,B62/C61M,A62/C61M(puorGA62/C61M
Item Specification
Three-phase waveform output pin
___ ___ ___
Six pins (U, U, V, V, W, W)
Forced cutoff input
(1)
_____
Input “L” to SD pin
Used Timers Timer A4, A1, A2 (used in the one-shot timer mode)
___
Timer A4: U- and U-phase waveform control
___
Timer A1: V- and V-phase waveform control
___
Timer A2: W- and W-phase waveform control
Timer B2 (used in the timer mode)
Carrier wave cycle control
Dead timer timer (3 eight-bit timer and shared reload register)
Dead time control
Output waveform Triangular wave modulation, Sawtooth wave modification
Enable to output “H” or “L” for one cycle
Enable to set positive-phase level and negative-phase
level respectively
Carrier wave cycle Triangular wave modulation: count source x (m+1) x 2
Sawtooth wave modulation: count source x (m+1)
m: Setting value of TB2 register, 0 to 65535
Count source: f1, f2, f8, f32, fC32
Three-phase PWM output width Triangular wave modulation: count source x n x 2
Sawtooth wave modulation: count source x n
n: Setting value of TA4, TA1 and TA2 register (of TA4,
TA41, TA1, TA11, TA2 and TA21 registers when setting
the INV11 bit to “1”), 1 to 65535
Count source: f1, f2, f8, f32, fC32
Dead time active disable function Count source x p, or no dead time
p: Setting value of DTT register, 1 to 255
Count source: f1, f2, f1 divided by 2, f2 divided by 2
Active level Eable to select “H” or “L”
Positive and negative-phase concurrent Positive and negative-phases concurrent active disable function
Positive and negative-phases concurrent active detect function
Interrupt frequency For Timer B2 interrupt, select a carrier wave cycle-to-cycle
basis through 15 times carrier wave cycle-to-cycle basis
12.3 Three-phase Motor Control Timer Function
Timers A1, A2, A4 and B2 can be used to output three-phase motor drive waveforms. Table 12.3.1 lists the
specifications of the three-phase motor control timer function. Figure 12.3.1 shows the block diagram for
three-phase motor control timer function. Also, the related registers are shown on Figure 12.3.2 to Figure
12.3.8.
Table 12.3.1. Three-phase Motor Control Timer Function Specifications
NOTES:
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1. When the INV02 bit in the INVC0 register is set to “1” (three-phase motor control timer function), the SD
_____
function of the P85/SD pin is enabled. At this time, the P85 pin cannot be used as a programmable I/O
_____ _____
port. When the SD function is not used, apply “H” to the P85/SD pin.
_____
2. When the IVPCR1 bit in the TB2SC register is set to “1” (enable three-phase output forced cutoff by SD
_____
pin input), and “L” is applied to the SD pin, the related pins enter high-impedance state regardless of the
functions which are used. When the IVPCR1 bit is set to “0” (disabled three-phase output forced cutoff
_____ _____
by SD pin input) and “L” is applied to the SD pin, the related pins can be selected as a programmable I/
O port and the setting of the port and port direction registers are enable.
Related pins P72/CLK2/TA1OUT/V/RxD1
_________ _________ ___
P73/CTS2/RTS2/TA1IN/V/TxD1
P74/TA2OUT/W
____
P75/TA2IN/W
P80/TA4OUT/U
___
P81/TA4IN/U