Ibridge V2.0

Introduction

IBridge is a 4X4 key-pad shield with a 5110 Graphic LCD interface.You can plug it on Arduino boards directly, and you can get the small development platform with keypad input and Graphic LCD display.

Specification

PCB size	68.6mm X 53.3mm X 1.6mm
Power supply	5V
Operation Level	Digital 5/3.3V DC

Electrical Characteristics

Parameter	Min.	Typical	Max.	Unit
Power supply	4.5	5	5.5	VDC
Input voltage VinH(Target voltage=3.3V)	3	3.3	3.6	V
Input voltage VinH(Target voltage=5V)	4.5	5	5.5	V
Input voltage VinL	-0.3	0	0.5	V
Current Consumption	-	20	40	mA

Hardware

Zone 1: Set the voltage level of arduino board.

Zone 2: Interface for LCD5110

Zone 3: 16 buttons in scan keyboard

Pinmap

Index	Name of Arduino	Function of IBridge	Description
1	D0
2	D1
3	D2	ROW2	Scan key-board row line 2
4	D3	ROW3	Scan key-board row line 3
5	D4	Column0	Scan key-board column line 0
6	D5	Column1	Scan key-board column line 1
7	D6	Column2	Scan key-board column line 2
8	D7	Column3	Scan key-board column line 3
9	D8	SCK	LCD5110 clock
10	D9	MO	LCD5110 data
11	D10	D/Cn	LCD5110 data/command select
12	D11	RSTn	LCD5110 reset
13	D12	CSn	LCD5110 chip select
14	D13
15	A0
16	A1
17	A2
18	A3
19	A4	Row1	Scan key-board row line 1
20	A5	Row0	Scan key-board row line 0