K177B2014-HHD-1.77 inch lcd display

Product Detail

DESCRIPTION

K177B2014 is a 1.8 inch lcd display with optional resistive touch screen and capacitive touch screen control with a resolution of 128×160 pixels. This small size TFT LCD monitor is portrait mode with wider viewing angle by POL adjustment, Left: 40 / Right: 40 / Top: 40 / Bottom: 40 degrees (typical).Optional RTP or CTP.

This K177B2014 inch module has built-in ST7735S controller IC, supports MCU interface, the power supply voltage (VCC) range is 3.0V to 3.6V, the brightness is 380 nits (typ), and the contrast ratio is 800:1. This module is a coffee machine , medical equipment and other POS systems ideal. The module can operate at temperatures from -20°C to +70°C; its storage temperature range is -30°C to +80°C.

General Specifications

SPECIFICATIONS

Item	Contents	Unit
Size	1.77	inch
LCM Dimension	34.70（W）* 46.70（H） *2.30(T)	mm
LCD Active Area	28.03* 35.04	mm
Number Of Dots	128×160	pixel
LCD Type	a-Si TFT
Viewing Direction	12 o’clock
Driver IC	ST7735S
Interface Type	MCU
Operating Temperature	-20℃~ 70℃
Storage Temperature	-30℃~ 80℃
Backlight Type	2 LEDs
Brightness	380	cd/m2

IMAGE








DRAWING







Interface

LCM PIN Definition

NO.	Symbol	Description
1	LEDK	BACKLIGHT CATHODE
2	LEDA	BACKLIGHT ANODE
3	GND	Ground
4	VCC	POWER SUPPLY
5	IOVCC	I/O   POWER SUPPLY
6	TE	Frame mark.
7	CS	Chip enable, Low-active.
8	RESET	Reset pin
9	RS	Data/Command register address.
10	WR	Write signal, rising-edge-trigger.
11	RD	Read signal, rising-edge-active.
12	DB7	Data Bus
13	DB6	Data Bus
14	DB5	Data Bus
15	DB4	Data Bus
16	DB3	Data Bus
17	DB2	Data Bus
18	DB1	Data Bus
19	DB0	Data Bus
20	GND	Ground

DC Characteristics

Item	Symbol	Min	Typ	Max	Unit
TFT gate on voltage	VGH	—	15	—	V
TFT gate off voltage	VGL	—	-10	—	V
TFT common electrode Voltage	Vcom	—	-1	—	V

Typical Operation Conditions

Item	Symbol	Min.	Typ.	Max.	Unit
Analog Supply Voltage	VCI	2.5	2.8	3.3	V
Digital Supply Voltage	VDD	2.5	2.8	3.3	V
I/O Supply Voltage	IOVCC	1.65	1.8/2.8	3.3	V
Input High Voltage	VIH	0.8*IOVCC	–	IOVCC	V
Input Low Voltage	VIL	0	–	0.2*IOVCC	V
Output High Voltage	VOH	0.8*IOVCC	–	–	V
Output Low Voltage	VOL	–	–	0.2*IOVCC	V

Backlight Circuit Characteristics

Item	Symbol	Min.	Typ.	Max.	Unit
LED Current	IB	—	30	40	mA
LED Voltage	Vf	2.8	3.0	3.2	V
CIE	X	0.265	0.295	0.325
	Y	0.26	0.29	0.32
Brightness of LCM	L	—	380	—	cd/m2

Reliability Test Items

Test Item	Test Condition	Test result determinant gist
High temperature storage	80±3 ℃，48H；
Low temperature storage	-30±3 ℃，48H；
High temperature storage	70±3 ℃，48H；	Inspection after 2~4hours storage at roomtemperature,
Low temperature operation	-20±3 ℃，48H；	the sample shall be free from defects:
High temperature/humidity	60℃±3 ℃,90%±3%RH ，48H；	1.Air bubble in the LCD;
Thermal Shock	~20℃/0.5h~+70℃/0.5h for a total 24 cycles；	2.Non-display;
Vibration Test	Frequency 10Hz~55Hz~10Hz	3.Glass crack;
	Amplitude：1.5mm, X，Y，Z
	direction for total 1H；	4. The electrical
	(Packing condition)
ESD test	±4KV, Human Body Mode,	characteristics requirements shall be satisfied.
	150pF/330Ω；
	±8KV, Air Mode, 150pF/330Ω；

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