P80C557E6 查看數據表（PDF） - Philips Electronics

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P80C557E6

Single-chip 8-bit microcontroller

Philips Electronics 

Philips Semiconductors

Single-chip 8-bit microcontroller

Product specification

P83C557E6/P80C557E6

PWM1 (FDH)

7

PWM1.7

6

PWM1.6

5

PWM1.5

4

PWM1.4

3

PWM1.3

2

PWM1.2

1

PWM1.1

0

PWM1.0

Figure 12. Pulse width register PWM1.

Table 8. Description of PWM1 bits

BIT

PWM1.0 to 7

LOW/HIGH ration of PWM1 signal =

FUNCTION

(PWM1)

255 – (PWM1)

PWM0

fCLK

1/2

Prescaler

PWMP

8-Bit Comparator

8-Bit Counter

8-Bit Comparator

Output

Buffer

Output

Buffer

PWM1

Figure 13. Functional Diagram of Pulse Width Modulated Outputs.

PWM0

PWM1

1999 Mar 02

17

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