ROHM RCM2050R Technical data

Liquid crystal displays

查询RCM2050R供应商

16 characters1 line reflective
character module

RCM2050R

The RCM2050R 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) 57 dot character matrix with cursor.

3) Interfaces with 4-bit or 8-bit MPUs.

4) Displays up to 181 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 RCM2050R

FBlock diagram

FPin assignments

FPower supply example

FAbsolute maximum ratings (Ta = 25_C)

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Liquid crystal displays RCM2050R

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 RCM2050R

Timing chart
(1) Writing

(2) Reading

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Liquid crystal displays RCM2050R

Pin functions

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Liquid crystal displays RCM2050R

Instructions

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Liquid crystal displays RCM2050R

Character code and corresponding character pattern

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Liquid crystal displays RCM2050R

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 times 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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