Before wiring your Phico module to an external circuit, use a digital multimeter to confirm its electrical characteristics: Logic Voltage ( VDDcap V sub cap D cap D end-sub
While "D0 94V0" often appears on the PCB silkscreen or label, it is not always the full model number. These modules are standard commonly used in industrial control panels, amateur radio equipment, and consumer electronics.
If you have wired the display properly but do not see text, check the following variables: If you power on the display ( VSScap V sub cap S cap S end-sub VDDcap V sub cap D cap D end-sub V0cap V sub 0 phico d0 94v0 lcd display datasheet pdf
Most PHICO-manufactured boards utilize the industry-standard alphanumeric layout. Count the character blocks on the front of your screen:
Vintage Phico LED backlights frequently require an external series resistor (typically 10 to 100 ohms) to prevent thermal runaway. Do not connect Pin 15 directly to 5V unless you confirm an onboard resistor is already present. Before wiring your Phico module to an external
The text on your LCD's PCB is not a single model number but a combination of technical descriptors. Understanding this is the key to using it successfully. The "Phico D-0 94V-0" label is common across many types of LCDs in electronics forums. Here's a breakdown of its common components:
The manufacturer of the display assembly or the PCB substrate. Count the character blocks on the front of
If your Phico D0 94V-0 display features a single row of 14 or 16 interface pads (either inline or arranged in a 2x8 header block), it follows the universal HD44780 pin configuration. Below is the standard mapping used across the industry: Pin Number Function Description VSScap V sub cap S cap S end-sub Ground (0V) 2 VDDcap V sub cap D cap D end-sub Power Supply (+5V or +3.3V) 3 V0cap V sub 0
Smaller variations found in compact industrial equipment. The Underlying Controller: HD44780
The standard footprint of the Phico D-0 architecture balances space efficiency with optimal outdoor or industrial scannability. The character-based systems (like the 16x1 character layout) adhere to the following physical geometry: 80.0 mm × 36.0 mm × 10.0 mm Active Viewing Area: 65.0 mm × 14.0 mm Dot Size: 0.55 mm × 0.75 mm Dot Pitch: 0.63 mm × 0.83 mm Safety Rating: UL 94V-0 certified flame resistance Standard Pinout Configuration (16-Pin Interface)
Modules matching the PHICO design typically feature a single row of 14 or 16 interface pins. If your board has 14 pins, it lacks a backlight. If it has 16 pins, pins 15 and 16 power the background LED. Pin Number Description 0V System Ground 2 Power Supply +5V typical (some modern variants use +3.3V) 3 Contrast Adjust Connected to a variable resistor (potentiometer) 4 Register Select Low = Command Instruction; High = Data 5 Read / Write Low = Write to LCD; High = Read from LCD 6 Latches data on the falling edge 7 Data Bit 0 8-bit bidirectional data bus (Low byte) 8 Data Bit 1 8-bit bidirectional data bus 9 Data Bit 2 8-bit bidirectional data bus 10 Data Bit 3 8-bit bidirectional data bus 11 Data Bit 4 4-bit / 8-bit data bus (High byte) 12 Data Bit 5 4-bit / 8-bit data bus 13 Data Bit 6 4-bit / 8-bit data bus 14 Data Bit 7 4-bit / 8-bit data bus (Sign bit) 15 Backlight Anode LED Power (+5V via limiting resistor) 16 Backlight Cathode LED Ground Electrical Characteristics and Ratings