Technical data

USING THE UNIVERSAL DEVELOPER'S KIT

LZT 123 8020 R1A

12.7 Keypad Connector (X410)

A 10 pin connector is provided to connect directly to the Keypad

options when they are selected by the AT command AT*E2IO.

Pin Signal Description

1 KEYCOL0 Keyboard column 1 (GND)

2 KEYROW1

Data Terminal Ready / Keyboard row 1 / General purpose

it1

3 KEYCOL1

Data Carrier Detect / Keyboard column 1 / General purpose

output 1

4 KEYROW2 General purpose input/output 1 / Keyboard row 2

5 KEYCOL2

Ring Indicator / Keyboard column 2 / General purpose

output 2

6 KEYROW3 General purpose input/output 3 / Keyboard row 3

7 KEYCOL3

General purpose output 5 / Keyboard column 3 / Data Set

Ready

8 KEYROW4 General purpose input/output 4 / Keyboard row 4

9 KEYCOL4

Clear To Send / Keyboard column 4 / General purpose

output 4

10 N/C Not connected

Table 14: Keyboard Connector X410

12.8 Flashing Firmware

The developer's board has the hardware circuitry to support

firmware upgrading of several of the module families. Switch

S101 when placed in the FLASH mode allows the module to re-

flashed. Header X102 selects the Voltage used for Re-Flash

DCD Flash

S101 Normal Operation FLASH Mode

Normal (VDIG) FAST (12V)

X102 1-2 2-3