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參數資料
| 型號： | W79E804 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數： | 42/115頁 |
| 文件大小： | 1456K |
| 代理商： | W79E804 |
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W79E804A/803A/802A
- 42 -
BIT
NAME
FUNCTION
7
BKCH
See the below table, when BKEN is set.
6
BKPS
0: Brake is asserted if P0.2 is low.
1: Brake is asserted if P0.2 is high
5
BPEN
See the below table, when BKEN is set.
4
BKEN
0: The Brake is never asserted.
1: The Brake is enabled, and see the below table.
3
PWM3B
0: The PWM3 output is low, when Brake is asserted.
1: The PWM3 output is high, when Brake is asserted.
2
PWM2B
0: The PWM2 output is low, when Brake is asserted.
1: The PWM2 output is high, when Brake is asserted.
1
PWM1B
0: The PWM1 output is low, when Brake is asserted.
1: The PWM1 output is high, when Brake is asserted.
0
PWM0B
0: The PWM0 output is low, when Brake is asserted.
1: The PWM0 output is high, when Brake is asserted.
Brake Condition Table:
BPEN
BKCH
BRAKE CONDITION
0
0
Brake On (software brake and keeping brake).
Software brake condition. When active (BPEN=BKCH=0, and BKEN=1), PWM
output follows PWMnB setting. This brake has no effect on PWMRUN bit,
therefore, internal PWM generator continues to run.
When the brake is released,
the state of PWM output depends on the current state of PWM generator output
during the release.
0
1
Brake On, when PWM is not running (PWMRUN=0), the PWM output condition
follows PWMnB setting.
When the brake is released (by disabling BKEN = 0), the PWM output resumes
to the state when PWM generator stop running prior to enabling the brake.
Brake Off, when PWM is running (PWMRUN=1).
1
0
Brake On, when Brake Pin asserted.
External pin brake condition. When active (by external pin), PWM output follows
PWMnB setting, PWMRUN will be cleared by hardware, and BKF flag will be set.
When the brake is released (by de-asserting the external pin and disabling
BKEN = 0), the PWM output resumes to the state of the PWM generator output
prior to the brake.
1
1
No any active.
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