HCMS-3907 Avago Technologies US Inc., HCMS-3907 Datasheet - Page 11

• Manufacturer Part Number: HCMS-3907
• Description: LED DISPLAY 5X7 4CHAR 3.8MM GRN
• Manufacturer: Avago Technologies US Inc.
• Series: HCMS-39xxr

Specifications of HCMS-3907

• Millicandela Rating: *
• Internal Connection: *
• Size / Dimension: *
• Color: Green
• Configuration: *
• Voltage - Forward (vf) Typ: *
• Package / Case: 12-DIP
• Display Type: Alphanumeric
• Number Of Digits/alpha: 4
• Digit/alpha Size: 0.15" (3.8mm)
• Character Format: Dot Matrix
• Character Size: 3.81mm
• Led Color: Green
• Luminous Intensity: 1mcd
• No. Of Digits / Alpha: 4
• Display Area Width: 17.78mm
• Display Area Height: 10.16mm
• Number Of Digits: 4
• Illumination Color: Green
• Wavelength: 574 nm
• Operating Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Common Pin: -
• Lead Free Status / Rohs Status: Details

11
Figure 5. HCMS-39XX write cycle timing diagram.
Pixel Map
In a 4-character display, the 160-
bits are arranged as 20 columns
by 8 rows. This array can be
conceptualized as four 5 x 8 dot
matrix character locations, but
only 7 of the 8 rows have LEDs
(see Figures 6 & 7). The bottom
row (row 0) is not used. Thus,
latch location 0 is never
displayed. Column 0 controls the
left-most column. Data from Dot
Latch locations 0-7 determine
whether or not pixels in Column
(SIMULTANEOUS)
LED OUTPUTS,
D
OUT
REGISTERS
CONTROL
(SERIAL)
D
CLK
OUT
D
RS
CE
IN
NOTE:
1. DATA IS COPIED TO THE CONTROL REGISTER OR THE DOT LATCH AND LED OUTPUTS WHEN CE IS HIGH AND CLK IS LOW.
T
CLKCE
T
3
RSS
1
T
T
CEDO
RSH
10
2
T
CES
4
T
9
T
DOUTP
DS
6
T
T
0 are turned-on or turned-off.
Therefore, the lower left pixel is
turned-on when a logic high is
stored in Dot Latch location 1.
Characters are loaded in serially,
with the left-most character
being loaded first and the right-
most character being loaded last.
By loading one character at a
time and latching the data before
loading the next character, the
figures will appear to scroll from
right to left.
DOUT
DH
7
8
T
CLKH
11
PREVIOUS DATA
T
CLKL
12
T
CEH
5
NEW DATA LATCHED HERE
NEW DATA
[1]