SBN0064G Datasheet, PDF (19/37 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
7.7 Status Read and Status Register
The Status Register shows the current state of the SBN0064G. It can be read by the host microcontroller. Bits 4, 5, 7
shows the current status and Bits 0~3, and 6 are always fixed at 0.
To read the Status Register, the setting of the control bus is given in Table 14; the bit allocation is given in Table 15; the
description for each bit is given in Table 16.
Table 14 The setting of the control bus for reading the Status Register
C/D
R/W
0
1
Table 15 The Status Register bit allocation
D7(MSB)
D6
D5
D4
D3
D2
D1
D0(LSB)
BUSY
0
ON/OFF
RESET
0
0
0
0
Table 16 The Status Register bit description
Bit
BUSY
Description
BUSY=1 indicates that the SBN0064G is currently busy and can not accept new code or data. The
SBN0064G is executing an internal operation.
ON/OFF
BUSY=0 indicates that the SBN0064G is not busy and is ready to accept new code or data.
The ON/OFF bit indicates the current of status of display.
If ON/OFF=0, the display has been turned ON.
If ON/OFF=1, the display has been turned OFF.
RESET
Note that the polarity of this bit is inverse to that of the Display ON/OFF Register.
RESET=1 indicates that the SBN0064G is currently in the process of being reset.
RESET=0 indicates that the SBN0064G is currently in normal operation.
2005 May 20
19 of 37
data sheet (v3)