Hardware Description
34
98-08901C63-A
3.9
DISPLAY INTERFACE
This section describes the c18 display interface and its requirements.
3.9.1
Serial LCD
The c18 has an interface for connecting a serial 96x64 LCD. The interface is available only on c18 models using the full-featured
70-pin interface connector. Table 13 describes the pin attributes for the LCD.
3.9.2
Backlights
3.9.2.1
KEYB_DRV
The KEYB_DRV output is intended to be a driver for backlight LEDs in handset-like applications. KEYB_DRV is an open
drain output used to sink the current. Therefore, the backlight LEDs’ anode should be tied to VCC and the cathode to the c18
KEYB_DRV pin.
By default, the c18 enables this driver on power-up.
Table 13. LCD Pins
Pin #
Pin Name
Description
56
LCD_DATA
Data for serial LCD. Data comes from an 8-bit parallel-to-serial
converter.
58
LCD_CLK
LCD clock rate: 9.6 MHz.
54
LCD_CS_N
Chip-select signal (active low).
60
LCD_RS
Register-select signal. When RS=1, Data is sent on the
LCD_DATA line. When RS=0, Command is sent on the
LCD_DATA line.
25
RESOUT_N
Reset out from the modem MSM5100 (active low).
Note
This feature is available only on c18 models using a 70-pin interface connector.
An external driver should be implemented if higher drive currents are required.
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 ...