GU128X64-800B
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9.8 Address Mode Set（C/D="1"）
This command specifies the GRAM data write position address auto increment mode.
MSB LSB
1 0 0 0 * IGX IGY *
* Either a “0” or a “1” is acceptable
< --------------------------- > < ---------------- >
Command Select Address Mode data
IGX = "1" : X-Address +1(increment) when writing to GRAM.(It not affect to Y-Address.)
IGX = "0" : GRAM X address fixed mode
IGY = "1" : Y-Address +1(increment) when writing to GRAM.(It not affect to X-Address
IGY = "0" : GRAM Y address fixed mode.
9.9 Address Read （C/D ="1"）
This command reads both vertical and horizontal display start position addresses of GRAM (Refer to sect. 8 -
Display Screen and Initialize set on Page # 4)
. On the parallel interface, the data bus outputs the address until CSS
goes high after the READY signal goes active (Parallel #1:RD=LOW, Parallel #2:R/W=HIGH). The Data bus
becomes an input when other. On the serial interface, TXD outputs the data from SCK rising after command is
issued until the CSS goes high. Refer to 10.Interface on Page #15.
1st Byte:
MSB LSB
1 1 0 1 0 1 * *
* Either a “0” or a “1” is acceptable
< --------------------------- >
Command Select
MSB LSB
2nd Byte: * VG6 VG5 VG4 VG3 VG2 VG1 VG0 (Read)
3rd Byte: HG7 HG6 HG5 HG4 HG3 HG2 HG1 HG0 (Read)
< -------------------------------------------------------------- >
Vertical & Horizontal display start position address (GRAM)
VG0 to VG6: Vertical display start position address
HG0 to HG7: Horizontal display start position address
