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The BMD11M134 is a 4-digit alphanumeric display module (14-segment). In addition to displaying numbers 0 to 9, it can also display all uppercase English letters, 14 lowercase English letters, symbols, and more. You can cascade up to 4 BMD11M134 modules simultaneously, depending on your application. The development board communicates with the product through I2C interface.
Operating current:
- 24.6mA @3.3V (all digits and segments light on)
- 0.92mA @3.3V (all digits and segments light off)
Each digit includes a 14-segment display, and it can display content as follows:
- Number: 0~9
- All uppercase English letters: A~Z
- 14 lowercase English letters: a, b, c, d, e, g, h, i, m, n, o, u, w, y
- Symbol:
"
、
~
/
_
'
(
)
*
+
,
-
.
:
<
=
>
|
^
[
]
Can cascade up to 4 BMD11M134 modules simultaneously
Interface: I2C (address: 0x2C)
Dimension: 40.47 x 26.61 x 14.92 mm
Net weight: 11g
Product includes: BMD11M134 x1, 2x2P header x1
DESCRIPTION
The BMD11M134 is designed using the 8-bit MCU, HT66F3185. Two cascaded interfaces are on the rear of the product. Up to four BMD11M134 modules can be cascaded concurrently, and only one of them needs to be connected to the development board.
There is a BMCOM on the product to directly connect to BMduino development boards, such as BM53A367A. You can use the product with other development boards, such as Arduino UNO, as well.
HARDWARE OVERVIEW
PIN DESCRIPTION
Rear of the BMD11M134
Pin
Pin name
Function
1
NC
-
2
SCL
I2C: clock line
3
SDA
I2C: data line
4
VDD
Power supply: 3.3V~5.5V
5
GND
Ground
6
GND
Ground
7
VDD
Positive power
8
ST_O
Cascade status output
9
TRX
Cascade single-bus communication pin
10
VDD
Positive power
11
GND
Ground
12
ST_I
Cascade status input
13
TRX
Cascade single-bus communication pin
RESOURCES
MCU : Holtek HT66F3185, A/D Flash MCU with EEPROM, including datasheet,
package information, etc.
