PEDL9044-03
1
Semiconductor
ML9044-xxA/xxB
Arbitrator RAM (ABRAM)
The arbitrator RAM (ABRAM) stores arbitrator display data.
The ABRAM address is set at the ADC with the relationship illustrated below. Its valid address area is 00 to 23
(00H to 17H).
Although an address exceeding 23 (17H) can be set or the address already set may exceed it due to automatic
increment or decrement processing, any address out of the valid address area is ignored.
The cursor or blink is also displayed even when a CGRAM or ABRAM address is set in the ADC. Therefore, the
cursor or blink display should be inhibited while the ADC is holding a CGRAM or ABRAM address.
DB6 DB5 DB4 DB3 DB2 DB1 DB0
MSB
ADC
LSB
Hexadecimal
Hexadecimal
The arbitrator RAM can store a maximum of 120 dots of the arbitrator Display-ON data in units of 5 dots.
The arbitrator display is not shifted by any instructions and has the following relationship with the LCD display
positions.
Relationship between display-ON
data and segment pins
Configuration of input display data
Input data
5XSn+1
5XSn+5
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
*
*
*
E4 E3 E2 E1 E0
* Don’t Care
E4
E4
Display - ON data
Sn = AB RAM address (0 to 23)
21/60
OKI [ OKI ELECTRONIC COMPONETS ]
