NJU6635 New Japan Radio Co.,Ltd, NJU6635 Datasheet - Page 11

• Manufacturer Part Number: NJU6635
• Description: 16-character 2-line Dot Matrix Lcd Controller Driver
• Manufacturer: New Japan Radio Co.,Ltd

(2)Power on Initialization by internal circuits
Note) If the condition of power supply rise time described in the Electrical Characteristics is not satisfied, the
(2-1) Initialization By internal Reset circuits
(2-2) Initialization By Hardware
RESET operation
Operation timing
RESET
is turned on. In the internal power on initialization, following instructions are executed.
V
than 1.2ms to the RESET terminal, the reset sequence is executed. In this time, the busy signal output
during 10ms after RESET terminal goes to “H”.
External Reset
Signal
Counter Output
RS-F/F Output
Internal Reset
Signal
BUSY
DD
internal Power on initialization Circuits will not operate and initialization will not be performed.
The NJU6635 is initialized automatically by the internal power on initialization circuits when the power
During the internal power on initialization, the busy flag (BF) is “1” and this status is kept 10ms after
Initialization flow is shown below:
In this case, the initialization by MPU software is required.
The NJU6635 incorporates RESET terminal to initialize the all system. When the “L” level input over
= 4.5V.
Entry Mode Set
Display On/Off
Clear Display
Function Set
Control
System clock
Over 1.2ms
DL=1
A=0
M0=0
M1=0
E=0
D=0
C=0
B=0
I/D=1
S=0
C
RST
Power No
RESET
Counter
:8-bit long interface data
:Addressing mode 1
:A mode
:32-character 1-line
:Normal Display mode
:Display Off
:Cursor Off
:Cursor Blink Off
:Increment by 1
:No Shift
Q
RS-F/F
RST
C
10ms
Q
System RESET
NJU6635