AN2475 Freescale Semiconductor / Motorola, AN2475 Datasheet - Page 6

• Manufacturer Part Number: AN2475
• Description: Generating a PWM Signal Modulated by an Analog Input Using the MC68HC908QY4 Microcontroller
• Manufacturer: Freescale Semiconductor / Motorola

AN2475/D
6
Generating a PWM Signal Modulated by an Analog Input
GREEN
Freescale Semiconductor, Inc.
LED
For More Information On This Product,
Figure 2. Duty Cycle Modulation versus Analog Input Voltage
Using the MC68HC908QY4 Microcontroller
RED
LED
2.54
2.53
2.52
2.51
2.50
2.49
2.48
Figure 3. Voltage Regulation versus Load Current
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20
40
PTB0
PTB1
MC68HC908QY4
60
Figure 1. Application Circuit
V
5 V
DD
80
TIMER
100
ADC
120
I
Load
140
(mA)
5 V
160
180
200
220
240
260
MOTOROLA
280
V
REG