M32CSLASH8B datasheet(197/406 Pages) RENESAS

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M32C/8B Group

16. Three-Phase Motor Control Timer Function

Preliminary specification

Specifications in this manual are tentative and subject to change.

REJ09B0450-0050 Rev.0.50 Oct 31, 2008

Page 180 of 385

Figure 16.2

INVC0 Register

b7 b6 b5 b4

Three-Phase PWM Control Register 0(1)

Symbol

INVC0

Address

0308h

Bit Symbol

Bit Name

INV00

After Reset

00h

Function

ICTB2 count condition

select bits

INV01

b1 b0

0 0:

0 1:

1 0: Timer B2 underflow at the rising edge of the

timer A1 reload control signal(2)

(every odd-numbered timer B2 underflow)

1 1: Timer B2 underflow at the falling edge of the

timer A1 reload control signal(2)

(every even-numbered timer B2 underflow)

INV02

Three-phase motor control timer

function enable bit(3)

0: Three-phase motor control timer function not used

1: Three-phase motor control timer function used(4,5)

INV03

Three-phase motor control timer

output control bit

0: Three-phase motor control timer output disabled(5,6)

1: Three-phase motor control timer output enabled

Modulation mode select bit

0: Triangular wave modulation mode

1: Sawtooth wave modulation mode

INV06

INV04

Upper and lower arm

simultaneous turn-on disable bit

0: Simultaneous turn-on enabled

1: Simultaneous turn-on disabled

INV05

Upper and lower arm

simultaneous turn-on detect flag

0: Not detected

1: Detected (7)

Software trigger select bit

Transfer trigger is generated when the INV07 bit

is set to 1. Trigger for the dead time timer is also

generated when the INV06 bit is set to 1.

This bit is read as 0.

INV07

NOTES:

1. Set the INVC0 register after the PRC1 bit in the PRCR register is set to 1 (write enable). Set bits INV06 and INV02 to INV00

while timers A1,A2, A4, and B2 are stopped.

2. Set the INV01 bit to 1 after setting a value to the ICTB2 register. Also, when the INV01 bit is set to 1, set the timer A1 count start

bit to 1 prior to the first timer B2 underflow.

3. Set pins after the INV02 bit is set to 1. Refer to the table, Pin settings when using three-phase motor control timer function .

4. Set the INV02 bit to 1 to operate the dead time timer, U-, V-, and W-phase output control circuits, and ICTB2 counter.

5. When the INV03 bit is set to 0 and the INV02 bit to 1, pins U, U, V, V, W, and W (including when other output functions are

assiged to these pins) are all placed in high-impedance states.

6. The INV03 bit becomes 0 when one of the following occurs:

-Reset

-The both upper and lower arms output the active level signals at the same time while the INV04 bit is set to 1

-The INV03 bit is set to 0 by a program

-Signal applied to the NMI pin changes from "H" to "L" (while an "L" is applied to the NMI pin, the INV03 bit cannot be set to 1).

7. The INV05 bit cannot be set to 1 by a program. To set the INV05 bit to 0, write a 0 to the INV04 bit.

Timer B2 underflow

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