HCMS-3972 Avago Technologies US Inc., HCMS-3972 Datasheet - Page 6

• Manufacturer Part Number: HCMS-3972
• Description: LED DISPLAY 5X7 8CHAR 5MM RED
• Manufacturer: Avago Technologies US Inc.
• Series: HCMS-39xxr

Specifications of HCMS-3972

• Display Type: Alphanumeric
• Millicandela Rating: *
• Internal Connection: *
• Size / Dimension: *
• Color: Red
• Configuration: *
• Voltage - Forward (vf) Typ: *
• Package / Case: 26-DIP
• Number Of Digits/alpha: 8
• Digit/alpha Size: 0.20" (5mm)
• Number Of Digits: 8
• Character Size: 2.54 mm x 4.57 mm
• Illumination Color: Red
• Wavelength: 628 nm
• Operating Voltage: 3.3 V
• Operating Current: 10 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Luminous Intensity: 128 ucd
• Power Consumption: 1.532 W
• Viewing Area (w X H): 40.06 mm x 4.57 mm
• Common Pin: None
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Electrical Description
Pin Function
RESET (RST)
DATA IN (D
DATA OUT (D
CLOCK (CLK)
REGISTER SELECT (RS)
CHIP ENABLE (CE)
OSCILLATOR SELECT
OSCILLATOR (OSC)
BLANK (BL)
GND
GND
V
V
6
LED
LOGIC
LED
LOGIC
IN
)
OUT
)
Description
Sets Control Register bits to logic low. The Dot Register contents are unaffected by the
Reset pin. (logic low = reset; logic high = normal operation).
Serial Data input for Dot or Control Register data. Data is entered on the rising edge of the
Clock input.
Serial Data output for Dot or Control Register data. This pin is used for cascading
multiple displays.
Clock input for writing Dot or Control Register data. When Chip Enable is logic low, data
is entered on the rising Clock edge.
Selects Dot Register (RS = logic low) or Control Register (RS = logic high) as the
destination for serial data entry. The logic level of RS is latched on the falling edge of
the Chip Enable input.
This input must be a logic low to write data to the display. When CE returns to logic
high and CLK is logic low, data is latched to either the LED output drivers or a Control
Register.
Selects either an internal or external display oscillator source. (SEL) (logic low = External
Display Oscillator; logic high = Internal Display Oscillator).
Output for the Internal Display Oscillator (SEL = logic high) or input for an External
Display Oscillator (SEL = logic low).
Blanks the display when logic high. May be modulated for brightness control.
Ground for LED drivers.
Ground for logic.
Positive supply for LED drivers.
Positive supply for logic.