![Motorola c18 Скачать руководство пользователя страница 44](http://html.mh-extra.com/html/motorola/c18/c18_developers-manual_21877044.webp)
Hardware Description
36
98-08901C63-A
3.9.3
LCD_EL_EN
The c18 provides support for controlling an electro-luminescent (EL) lamp. The output enables four levels of intensity control.
3.9.4
Keypad
The keypad interface consists of eight pins, which can be used to connect a matrix keypad and other control buttons (such as
volume up/down). Each pin asserts an interrupt if pulled low. All keypad lines have internal pull-ups.
3.9.5
General-purpose A/D Converter - GPADC
The c18 has two general-purpose ADC inputs, ADC1 and ADC2. The GPADC is located in the MSM5100 block. It is intended
to digitize DC signals corresponding to analog parameters, such as battery voltage and temperature.
Table 14 lists the GPADC specifications.
*
Vref can be software configured to 0.62 V, 1.24 V, 1.86 V or 2.5 V
.
Table 14. GPADC Specifications
Parameter
Min
Typ
Max
Units
Comments
Resolution
8
Bits
Full-scale error
+/-1
LSB
Offset error
+/-6
LSB
Channel isolation
50
dB
At DC
Full-scale input range
GND
Vref
*
3dB input bandwidth
2.65
MHz
Source resistance = 50
Ω
Input serial resistance
5
K
Ω
Input capacitance
12
pF
Note
This feature is hardware supported.
Содержание c18
Страница 1: ...Developer s Guide Motorola c18 Cellular Engine Module Description 98 08901C63 A ...
Страница 8: ...viii 98 08901C63 A ...
Страница 20: ...Introduction 12 98 08901C63 A ...
Страница 46: ...Hardware Description 38 98 08901C63 A ...
Страница 56: ...Mechanical Description 48 98 08901C63 A Figure 22 c18a1 Bottom View Figure 23 c18a1 Side View ...
Страница 57: ...98 08901C63 A 49 Mechanical Description Figure 24 c18c Top View Figure 25 c18c Bottom View ...
Страница 60: ...Service Support 52 98 08901C63 A ...
Страница 62: ...Suggested Connectors 54 98 08901C63 A ...
Страница 78: ...Hardware Requirements for CDG2 and Field Testing 70 98 08901C63 A ...
Страница 82: ...Index 74 98 08901C63 O ...