128×64 Chip on Glass LCD (ST7565P)

Model No. WO12864T

Monochrome Display
Graphic LCD
COG LCD
Display Format : 128×64
IC: ST7565P
3.3V power supply
1/65 duty cycle, 1/9 bias
Interface : 6800/8080/SPI

Category: COG LCD

Description

WO12864T is a monochrome graphic LCD module made of 128×64 dot matrix format. This COG Module is built in with ST7565P IC, it supports 8-bit 6800, 8-bit 8080 parallel and 4-wire serial SPI interface. The WO12864T is having the same outline dimension as WX12864T2, but VA size and AA size are different. The power supply (VDD) of WO12864T is 3.3V, VOP 9.1V which are the same as WX12864T2. The WO12864T is an alternative item to replace WX12864T2 which TAB IC had been phased out. Comparing WO12864T and WX12864T, the outline dimension, interface, pin assignment, main electrical characteristics are all the same, just AA size and VA size are different.

This module can be operating at temperatures from -20℃ to +70℃; its storage temperatures range from -30℃ to +80℃. WO12864T is available in FSTN positive LCD and with White LED backlight; without backlight option is available as well. Please contact us if you need different LCD type and LED combination.

Drawing

Interface Pin Function

Pin No.

Symbol

I/O

Description

VDD

Power supply pin for logic.

VSS

Ground pin, connected to 0V

/CS1

Chip select input pin. Interface access is enabled when CS1B is “L” and CB2 is “H”. When chip is on-active (CS1B=”H” or CS2=”L”), D[7:0] pins are high impedance.

CS2

/RES

Hardware reset input pin. When RSTB is “L”, internal initialization is executed and the internal registers will be initialized.

It determines whether the access is related to data or command.
A0=”H”: Indicates that signals on D[7:0] are display data.
A0=”L”: Indicates that signals on D[7:0] are command.

R/W

Read/Write execution control pin. When PSB is “H”,
RWR is not used in serial interface and should fix to “H” by VDD.

C86	MPU Type	RWR	Description
H	6800 series	R/W	Read/Write control input pin. R/W=”H”:read R/W=”L”:write.
L	8080 series	/WR	Write enable input pin. Signals on D[7:0] will be latched at the rising edge of /WR signal.

Read/Write execution control pin. When PSB is “H”,

C86	MPU Type	ERD	Description
H	6800 series	E	Read/Write control input pin. R/W=”H”: When E is “H”, D[7:0] are in output mode. R/W=”L”: Signals on D[7:0] are latched at the falling edge of E signal
L	8080 series	/RD	Read enable input pin. When /RD is “L”, D[7:0] are in output mode.

ERD is not used in serial interface and should fix to “H” by VDD.

9-16

D0-D7

I/O

Data bus line

C86

C86 selects the microprocessor type in parallel interface mode.

PSB	C86	Selected Interface
“H”	“H”	Parallel 6800 Series MPU Interface
“H”	“L”	Parallel 8080 Series MPU Interface
“L”	“X”	Serial 4-Line SPI Interface

Please refer to “APPLICATION NOTES” and “Microprocessor Interface” (Section 6) for detailed connection of the selected interface.

P/S

PSB selects the interface type: Serial or Parallel.

General Specifications

Item	Dimension	Unit
Number of dots	128 × 64	－
Module dimension	38.0 × 26.42 × 8.8	mm
View area	29.58 × 16.22	mm
Active area	25.58 × 14.06	mm
Dot size	0.18 × 0.20	mm
Dot pitch	0.20 × 0.22	mm
Duty	1/65 DUTY,1/9 BIAS
Backlight Type	LED
IC	ST7565P

Absolute Maximum Ratings

Item	Symbol	Min	Typ	Max	Unit
Operating Temperature	T_OP	-20	－	+70	℃
Storage Temperature	T_ST	-30	－	+80	℃
Power Supply Voltage	VDD	-0.3	－	3.6	V
Power supply voltage (VDD standard)	V0, VOUT	-0.3	－	14.5	V
Power supply voltage (VDD standard)	V1, V2, V3, V4	-0.3	－	V0+0.3	V

Electrical Characteristics

Item	Symbol	Condition	Min.	Typ.	Max.	Unit
Supply Voltage For Logic	V_DD-V_SS	－	3.0	－	3.3	V
Supply Voltage For LCD	V_OP	Ta=-20℃ Ta=25℃ Ta=70℃	－ 8.9 －	－ 9.1 －	－ 9.3 －	V V V
Input High Volt.	V_IH	－	0.8 V_DD	－	V_DD	V
Input Low Volt.	V_IL	－	Vss	－	0.2 V_DD	V
Output High Volt.	V_OH	－	0.8 V_DD	－	V_DD	V
Output Low Volt.	V_OL	－	Vss	－	0.2 V_DD	V
Supply Current	I_DD	V_DD=3.3V	－	－	2.0	mA

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