Specifications

Product Technical Specification & Customer Design Guidelines
Interfaces
See chapter 3.4, “Electrical Information for Digital I/O” on page 30 for 2V8-1, 2V8-2, pull-up and open drain
voltage characteristics and for Reset state definition.
If the LED is not necessary, it is possible to disable it.
For further details, refer to document
[4] AT Command Interface Guide for Open
AT
®
Firmware v6.5.
3.4 Electrical Information for Digital I/O
There are three types of digital I/O on the Q64: 2.8 volt CMOS type 1 (2V8-1), 2.8 volt
CMOS type 2 (2V8-2) and Open drain.
The I/O concerned is all interfaces like GPIOs, PCM, etc.
The three types are described below:
Electrical characteristics of digital I/O
2.8 Volts type 1 (2V8-1 )
Parameter I/O type Minim. Typ Maxim. Condition
Internal 2.8V power supply
VCC_2V8
2.74V 2.8V 2.86V
V
IL
CMOS
-0.5V* 0.84V
V
IH
CMOS
1.96V 3.2V*
V
OL
CMOS
0.4V I
OL
= - 4 mA
V
OH
CMOS
2.4V I
OH
= 4 mA
I
OH
4mA
Input / Output pin
I
OL
- 4mA
*Absolute maximum ratings
2.8 Volts type 2 (2V8-2 )
Parameter I/O type Minim. Typ Maxim. Condition
V
IL
CMOS
-0.3V* 0.15V
V
IH
CMOS
1.6V 3.1V*
V
OL
CMOS
0.4V I
OL
= - 4 mA
V
OH
CMOS
1.87V I
OH
= 4 mA
I
OH
4mA
Input / Output pin
I
OL
- 4mA
*Absolute maximum ratings
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prior written agreement.
WA_DEV_Q64_PTS_001-003 January 9, 2009