SBN0064G Datasheet, PDF (11/37 Pages) List of Unclassifed Manufacturers – Dot-matrix STN LCD 64-SEGMENT Driver with 64-row x 64-column Display Data Memory

Avant Electronics
SBN0064G
Dot-matrix STN LCD 64-SEGMENT Driver with 64-row x 64-column Display Data Memory
5 INTERFACE WITH A HOST MICROCONTROLLER
5.1 Interface signals and operation
The interface signals between the host microcontroller and the SBN0064G are data bus and control bus. The data bus
is an 8-bit (DB0~DB7) bi-directional bus. The control bus is composed of the following signals: C/D, E, and R/W.
By means of data bus and control bus, the host microcontroller can write data to or read data from the Display Data
Memory, can program the internal registers, and can read status of the SBN0064G. It is the host microcontroller’s
responsibility to put proper data and timing on the data bus and control bus to ensure correct data transfer.
Fig. 6 gives an example for interface with an 8-bit microcontroller:
V_DD
V_DD
C/D ^{(indicating command/data)}
Address
8-bit
Microcontroller
D0~D7
E
R/W
RES
V_SS
Address or
I/O space
decoding
RESET
C/D
CS3
CS2B
CS1B
V_DD
SBN0064G
DB0~DB7
E
R/W
RSTB
V_SS
V_EE
Negative
LCD bias voltage
Fig.6 Interface example with an 8-bit microcontroller
Fig. 7 gives an example for interface with a 68-family microcontroller
VDD
VDD
A0
A1~A15
68-family ^VMA
Microcontroller
D0~D7
E
R/W
GND
RES
DECODER
V_DD
C/D
CS3 ^SBN0064G
CS2B
CS1B
DB0~DB7
E
R/W
RESET
RSTB
V_SS
V_EE
Negative
LCD bias voltage
Fig.7 Interface with a 68-family microcontroller
2005 May 20
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data sheet (v3)