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Product Technical Specification
Refer to the following table for the electrical characteristics of the WAKE-UP interface.
Table 31.
WAKE-UP Electrical Characteristics
I/O Type
Digital
*
VDDIO = VGPIO = 1.8 V.
3.16. Fast Shutdown Signal (FAST_SHUTDOWN)
The AirPrime HL77xx modules provide one FAST_SHUTDOWN signal.
Refer to the following table for the pad description of the
Table 32.
FAST_SHUTDOWN Pad Description
Pad Number
Signal Name
65
FAST_SHUTDOWN
Refer to the following table for the electrical characteristics of the FAST_SHUTDOWN interface.
Table 33.
FAST_SHUTDOWN Electrical Characteristics
I/O Type
Digital
*
VDDIO = VGPIO = 1.8 V.
3.17. PWM
The AirPrime HL77xx modules provide one PWM signal that can be used in conjunction with an
external transistor for driving a vibrator, or a backlight LED.
The PWM uses two 7-bit unsigned binary numbers – one for the output period and one for the pulse
width or the duty cycle.
The relative timing for the PWM output is shown in the figure below.
Figure 8.
Relative Timing for the PWM Output
41110555
Parameter
Minimum
V
IL
V
0.7 x VDDIO*
IH
Parameter
Minimum
V
IL
V
0.7 x VDDIO
IH
Rev 1.0
Typical
FAST_SHUTDOWN
I/O
I/O Type
I
1.8V
Typical
Detailed Interface Specifications
Maximum
0.3
interface.
Description
Shuts down the module without
deregistration from the network
Maximum
0.3xVDDIO
November 01, 2017
Unit
V
V
Unit
V
V
34
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