Motorola MC68HC908MR32 用户手册

Advance Information

MC68HC908MR16/MC68HC908MR32 — Rev. 4.0

176

Pulse-Width Modulator for Motor Control (PWMMC)

MOTOROLA

The dead-time write-once register (DEADTM) holds an 8-bit value which 
specifies the number of CPU clock cycles to use for the dead-time when 
complementary PWM mode is selected. After this register is written for 
the first time, it cannot be rewritten unless a reset occurs. Dead-time is 
not affected by changes to the prescaler value.

The PWM disable mapping write-once register (DISMAP) holds an 8-bit 
value which determines which PWM pins will be disabled if an external 
fault or software disable occurs. For a further description of disable 
mapping, see 

. After this register is written for the 

first time, it cannot be rewritten unless a reset occurs.

Address:

$0036

Bit  7

6

5

4

3

2

1

Bit  0

Read:

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Write:

Reset:

1

1

1

1

1

1

1

1

Address:

$0037

Bit  7

6

5

4

3

2

1

Bit  0

Read:

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Write:

Reset:

1

1

1

1

1

1

1

1