Matrix Orbital LK162-12 Legacy - Manual (Page 2)

LK162-12 rev 4 2
Table of Contents
1. Introduction..................................................................................................................... 5
1.1 What it Does ......................................................................................................................................................5
1.2 What it Does Not Do ........................................................................................................................................5
1.3 Keypad Interface...............................................................................................................................................5
1.4 Setup for Testing...............................................................................................................................................5
1.5 Trying Out your LK162-12...............................................................................................................................6
1.6 Trying out a Keypad.........................................................................................................................................7
1.6.1 Here's what to do:....................................................................................................................................7
1.7 Manual Override………....................................................................................................................................8
1.8 Memory Chip Lockdown..................................................................................................................................7
2. Connections.................................................................................................................. 10
2.1 Connector Pinout ............................................................................................................................................10
2.1.1 Power and I 2 C Connections ...................................................................................................................9
2.1.1.1 Five VoltModules……………………………………………………………………........................10
2.1.1.2 Wide Voltage Range Modules……………………………………………………………..............10
2.1.2 DB-9 Power.............................................................................................................................................10
2.1.3 RS-232 Communications........................................................................................................................11
2.1.4 I
2 C Communications...............................................................................................................................11
2.1.5 Alternate Serial Connection………….................................................................................................12
2.1.6 TTL Communications……………… ...................................................................................................13
2.1.7 I2C Communications…….....................................................................................................................13
2.2 General Purpose Outputs ...............................................................................................................................15
3. Displaying Text............................................................................................................. 17
3.1 General..............................................................................................................................................................17
3.2 The Built-In Character Font...........................................................................................................................17
3.3 Writing Text to the Display ...........................................................................................................................18
3.4 Text Commands ...............................................................................................................................................18
3.4.1 Auto line wrap on (254 67)(R)……………..........................................................................................17
3.4.2 Auto line wrap off (254 68)(R)……….. ...............................................................................................17
3.4.3 Auto scroll on (254 81)(R)…………………………............................................................................17
3.4.4 Auto scroll off (254 82)(R)……………................................................................................................17
3.4.5 Set cursor position (254 71 [column][row])………………… ...........................................................17
3.4.6 Send cursor home (254 72)…………………………...........................................................................17
3.4.7 Turn on underline cursor (254 74)(R)………………………………………. ....................................18
3.4.8 Turn off underline cursor (254 75)(R)…………………….................................................................18
3.4.9 Turn on block (blinking) cursor (254 83)(R)…….. ............................................................................18
3.4.10 Turn off block (blinking) cursor (254 84)(R)……………................................................................18
3.4.11 Cursor left (254 76)…………….. ........................................................................................................18
3.4.12 Cursor right (254 77)………………………........................................................................................18
4. Keypad Interface........................................................................................................... 20
4.1 General..............................................................................................................................................................20
4.2 Connections .....................................................................................................................................................20
4.3 I
2 C Interface......................................................................................................................................................17
4.4 RS-232 Interface...............................................................................................................................................21