Liquid crystal displays
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16 characters1 line reflective
character module
RCM2034R
The RCM2034R is a reflective TN type liquid crystal module with a built-in controller/driver LSI and a display capacity
of 16 characters 1 line.
Applications
Personal computers, word processors, facsimiles, telephones, etc.
Features
1) Wide viewing angle and high contrast.
2) 57 dot character matrix with cursor.
3) Interfaces with 4-bit or 8-bit MPUs.
4) Displays up to 226 characters and special symbols.
5) Custom character patterns are displayed with the
character RAM.
External dimensions (Units: mm)
6) Abundant instruction set including clear display , cursor on/off, and character blinking.
7) Compact and light weight for easy assembly to the
host instrument.
8) Operable on single 5 V power supply.
9) Low power consumption.
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Liquid crystal displays RCM2034R
FBlock diagram
FPin assignments
FPower supply example
FAbsolute maximum ratings (Ta = 25_C)
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Liquid crystal displays RCM2034R
FElectrical characteristics (VDD = 5.0 V ± 0.25 V, Ta = 25_C)
FOptical characteristics (Ta = 25_C, φ = 0_)
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Liquid crystal displays RCM2034R
Timing chart
(1) Writing
(2) Reading
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Liquid crystal displays RCM2034R
Pin functions
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Liquid crystal displays RCM2034R
Instructions
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Liquid crystal displays RCM2034R
Character code and corresponding character pattern
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Liquid crystal displays RCM2034R
Reset function
When you turn the power supply on using the internal reset circuit, the module automatically returns to its initial
(reset) settings. At the initial settings, the following
instructions are carried out.
(1) Clear display
The busy flag remains in the busy condition (BF = 1) until
initialization is completed. This takes 15 ms.
(2) Function set
DL = 1: 8-bit interface data length
N = 1
F = 0: 5 7 dot matrix
(3) Display on/off control
D = 0: Display off
C = 0: Cursor off
B = 0: Blinking off
(4) Entry mode set
1/D = 1: +1 (increment)
S = 0: No shift
(5) Select DD RAM
Depending on the power supply’s rise and fall time when
it is turned on, there may be times when the initialization
cannot be completed. Therefore, be aware of the following timing relationship.
t
OFF regulates the power supply breaks, or on and off
times.
Note) When the above power supply conditions are not met, the internal re-
set circuit will not operate properly.
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