参数资料
型号: M34552G8HFP
元件分类: 微控制器/微处理器
英文描述: 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PQFP48
封装: 7 X 10 MM, 0.65 MM PITCH, PLASTIC, QFP-48
文件页数: 17/143页
文件大小: 0K
代理商: M34552G8HFP
9: DISPLAY BUFFER
S1D13505F00A HARDWARE FUNCTIONAL
EPSON
1-101
SPECIFICATION (X23A-A-001-12)
9DISPLAY BUFFER
The system addresses the display buffer through the CS#, M/R#, and AB[20:0] input pins. When
CS# = 0 and M/R# = 1, the display buffer is addressed by bits AB[20:0]. See the table below:
The display buffer address space is always 2M bytes. However, the physical display buffer may be
either 512K bytes or 2M bytes – see “Summary of Conguration Options”.
The display buffer can contain an image buffer, one or more Ink/Cursor buffers, and a half-frame
buffer.
A 512K byte display buffer is replicated in the 2M byte address space – see the gure below.
Figure 9-1 Display Buffer Addressing
Table 9-1 S1D13505 Addressing
CS#
M/R#
Access
00
Register access:
REG[00h] is addressed when AB[5:0] = 0
REG[01h] is addressed when AB[5:0] = 1
REG[n] is addressed when AB[5:0] = n
0
1
Memory access: the 2M byte display buffer is addressed by AB[20:0]
1
×
S1D13505 not selected
Image Buffer
Ink/Cursor Buffer
Half-Frame Buffer
Image Buffer
Ink/Cursor Buffer
Half-Frame Buffer
Image Buffer
Ink/Cursor Buffer
Half-Frame Buffer
Image Buffer
Ink/Cursor Buffer
Half-Frame Buffer
Image Buffer
Ink/Cursor Buffer
Half-Frame Buffer
512K Byte Buffer
2M Byte Buffer
AB[20:0]
000000h
07FFFFh
080000h
0FFFFFh
100000h
17FFFFh
180000h
1FFFFFh
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