M32CSLASH8A datasheet(198/372 Pages) RENESAS

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M32C/8A Group

16. Three-Phase Motor Control Timer Function

Rev.1.00

Jul 15, 2007

Page 181 of 352

REJ09B0385-0100

Figure 16.3

INVC1 Register

b7 b6 b5 b4

Three-Phase PWM Control Register 1(1)

Symbol

INVC1

Address

0309h

Bit Symbol

Bit Name

After Reset

00h

Function

INV10

0: Timer B2 underflow

1: Timer B2 underflow and a write to the TB2

Timers A1, A2, and A4

start trigger select bit

INV11

Timers A11, A21, and A41

control bit

0: Timers A11, A21, and A41 not used

(Three-phase mode 0)

1: Timers A11, A21, and A41 used

(Three-phase mode 1)

INV12

Dead time timer

count source (fDT) select bit

0: f1

1: f1 divided by 2

Dead time timer trigger

select bit

0: Falling edge of one-shot pulse of timer

(A4, A1, and A2(3))

1: Rising edge of the three-phase output shift

INV16

INV13

Carrier wave rise/fall

detect flag(2)

0: Timer B2 underflow occurred an even number

of times

1: Timer B2 underflow occurred an odd number

of times

INV14

Active level control bit

0: Active Low

1: Active High

NOTES:

1. Set the INVC1 register after the PRC1 bit in the PRCR register is set to 1 (write enable). Set the INVC1 register while timers A1,

A2, A4, and B2 are stopped.

2. The INV13 bit is enabled only when the INV06 bit is set to 0 (triangular wave modulation mode) and the INV11 bit to 1.

3. If the following conditions are all met, set the INV16 bit to 1.

- The INV15 bit is set to 0

- Bits Dij (i = U, V or W, j = 0, 1) and DiBj in the IDBj register always have different values when the INV03 bit in the INVC0

(The upper arm and lower arm always output opposite level signals at any time except dead time.)

If any of the above conditions is not met, set the INV16 bit to 0.

−

(b7)

Reserved bit

Set to 0

INV15

Dead time disable bit

0: Dead time enabled

1: Dead time disabled

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