RW1026 Datasheet, PDF (4/4 Pages) List of Unclassifed Manufacturers – Dot Matrix 48x4 LCD Controller / Driver

RW1026
Dot Matrix 48x4 LCD Controller / Driver
„ Pad Description
Pad
CSB
XRD(A0)
XWR(SCLK)
DATA
VSS
OSC1
OSC2
VLCD
VDD
COM0-COM3
SEG0-SEG47
RSTP
VRAB
IF1,IF0
I/O
Function
Chip selection input for 3-SPI, 4-SPIwith pull-high resistor.
When CSB is login high, the data and command read from or written to the RW1026 are
I disabled. The serial interface circuit is also reset. But if CSB is at logic low level and is
input to the CSB pad, the data and command transmission between the host controller
and the RW1026 are all enabled.
READ clock input for 4-SPI (type B) with pull-high resistor.
Data in the RAM of RW1026 are clocked out on the falling edge of the XRD signal. The
clocked out data will appear on the DATA line. The host controller can use the next rising
I edge to latch the clocked out data.
A0 pin for 4-line(type A)serial interface.
A0=1: DATA
A0=0: Command
WRITE clock input for 4-SPI (type B) with pull-high resistor.
I Data on the DATA line are latched into the RW1026 on the rising edge of the XWR signal.
Serial clock input (SCLK) pin for 3-line, 4-line (type A), and IIC interface.
I/O Serial data input/output with pull-high resistor.
- Negative power supply. Ground
I ^{The OSC1 and OSC2 pads are connected to a external resistor if an RC oscillator is}
selected. If the system clock comes from an external clock source, the external clock
O _{source should be connected to the OSC1 pad.}
I LCD power input.
- Positive power supply.
O LCD common output.
O LCD segment output.
I
Reset pin with pull-up resistor, Initialized by setting RSTP to "L".
Reset operation is performing at RSTP signal level.
I LCD voltage adjusting pin. Applies voltage between V0 and VSS using a split resistor.
Interface selection pins with pull-up resistor
IF1,IF0
I ^{( 0 , 0 ) : IIC Interface}
( 0 , 1 ) : 3-line Interface
( 1 , 0 ) : 4-line Interface (Type A)
( 1 , 1 ) : 4-line Interface (Type B)
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RockWorks Technology Corp.