ssd1322z Newhaven Display International, Inc, ssd1322z Datasheet - Page 17

• Manufacturer Part Number: ssd1322z
• Description: 480 X 128, Dot Matrix High Power Oled/pled Segment/common Driver With Controller
• Manufacturer: Newhaven Display International, Inc

8
8.1
SSD1322 MCU interface consist of 8 data pin and 5 control pins. The pin assignment at different interface
mode is summarized in Table 8-1. Different MCU mode can be set by hardware selection on BS[1:0] pins
(refer to
Bus
Interface
8-bit 8080
8-bit 6800
3-wire SPI
4-wire SPI
8.1.1
The parallel interface consists of 8 bi-directional data pins (D[7:0]), R/W#, D/C#, E and CS#.
A LOW in R/W# indicates WRITE operation and HIGH in R/W# indicates READ operation.
A LOW in D/C# indicates COMMAND read/write and HIGH in D/C# indicates DATA read/write.
The E input serves as data latch signal while CS# is LOW. Data is latched at the falling edge of E signal.
Note
(1)
(2)
(3)
In order to match the operating frequency of display RAM with that of the microprocessor, some pipeline
processing is internally performed which requires the insertion of a dummy read before the first actual display
data read. This is shown in Figure 8-1.
SSD1322
↓ stands for falling edge of signal
H stands for HIGH in signal
L stands for LOW in signal
Pin Name
FUNCTIONAL BLOCK DESCRIPTIONS
MCU Interface
Table 7-2
MCU Parallel 6800-series Interface
Data/Command Interface
D7
Tie LOW
Tie LOW
Rev 0.10
for BS[1:0] pins setting)
Table 8-1 : MCU interface assignment under different bus interface mode
D6
P 17/56 Apr 2008
D5
Function
Write command
Read status
Write data
Read data
Table 8-2 : Control pins of 6800 interface
D4
D[7:0]
D[7:0]
D3
NC
NC
E
↓
↓
↓
↓
D2
R/W#
L
H
L
H
SDIN SCLK Tie LOW
SDIN SCLK Tie LOW
D1
CS#
L
L
L
L
D0
Control Signal
E
RD# WR#
E
D/C#
L
L
H
H
R/W# CS# D/C#
R/W#
CS# D/C#
CS# D/C#
CS# Tie LOW RES#
CS# D/C#
Solomon Systech
RES#
RES#
RES#
RES#