Sierra Wireless AirPrime SL Series, Migration Manual, Page: 33 / 49

WA_DEV_LG_UGD_001 Rev 002 March 30, 2011 33
Migration Guide Hardware Compatibility
Table 22. BOOT Pin of the SL6087
Pin # Signal Name Function Value
18 BOOT Download mode selection 1V8, input
4.1.2.9.4. Pull Up for SL808x/SL809x Control Pins
The SL808x/SL809x requires having an external 1V8 pull up for:

W_DISABLE_N , pin 62

SYSTEM_RESET_N , pin 63
The application board has to reserve the pull up resistor pads when using SL808x/SL809x.
Because pin 62 of the SL6087 is an interrupt pin, the pull up resistor must be removed from the
application board when the SL6087 is in use. Furthermore, this interrupt pin must be programmed as
a GPI by AT command.
For the SL501x, pins 62 and 63 need not be pulled up.
4.1.2.10. Features Only Supported by SL6087
The SL6087 provides additional features not supported by SL808x/SL809x/SL501x. These features
cannot be used when compatibility is required with SL808x/SL809x/SL501x. The following table
shows the features only supported by SL6087.
Table 23. Features Only Supported by SL6087
Pin # Signal Name Function SL6087 Value
3 BAT-RTC RTC Battery Connection 3.0V Input / 2.5V Output
4 GPIO0/CLK32O*

GPIO (
compatible
)
or

Optional 32.768KHz output for
external circuit (
not compatible
)
5 ADC2 Analog to Digital Input 2 Analog Input, 2V input range
16 SDA I
2
C Data Input / Open Drain Output
17 SCL I
2
C Clock Open Drain Output
40 ADC1 Analog to Digital Input 1 Analog Input, 2V input range
* Using pin 4 as a GPIO allows for compatibility with the SL809x and SL501x; however, CLK32O function cannot
be used when compatibility with other SL embedded modules is required.