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WA_DEV_LG_UGD_001
Rev 002
March 30, 2011
32
Migration Guide
Hardware Compatibility
Figure 6.
Recommended Schematic Design for Fixed Hardware Configuration of the On/Off Control
Note the following:
Remove R6 and place R5 when using SL6087.
Remove R5 and place R6 when using SL808x/SL809x/SL501x.
4.1.2.9.2.
External Buzzer/Flash LED
The Buzzer output and Flash LED output of the SL6087 are different compared to the Buzzer/Flash
LED outputs of the SL808x/SL809x
/
SL501x:
The SL6087 provides an open drain output which allows the buzzer/LED to be directly
connected to the SL6087; while the SL808x/SL809x/SL501x is a GPO output that cannot
drive the buzzer/LED directly.
The Buzzer output of the SL6087 is controlled by a PWM; while the SL808x/SL809x/SL501x
is controlled by GPIO.
In order for the application to be compatible with SL808x/SL809x/SL501x, it is recommended to have
an open drain circuit for driving the external LED and an additional frequency generator for the buzzer
output.
Figure 7.
Recommended External Open Drain Driving Circuit for Flash LED
Note:
Remove R2 when using SL808x/SL809x/SL501x. The value of R1 could be tuned to fit the LED
brightness.
4.1.2.9.3.
BOOT for SL6087
External control is necessary for the SL6087 during firmware upgrade. It is recommended to reserve a
test point for the BOOT pin.
Содержание AirPrime SL Series
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