参数资料
型号: M37224M3-XXXSP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 8 MHz, MICROCONTROLLER, PDIP42
封装: 0.600 INCH, 1.778 MM PITCH, SHRINK, PLASTIC, DIP-42
文件页数: 36/83页
文件大小: 901K
代理商: M37224M3-XXXSP
M37224M3-XXXSP
MITSUBISHI MICROCOMPUTERS
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
41
Fig. 42. Display Character Stored Data
(4) Memory for Display
There are 2 types of display memory : CRT display ROM (addresses
1000016 to 10FFF16) used to store character dot data (masked) and
CRT display RAM (addresses 060016 to 06B316) used to specify the
colors of characters to be displayed. The following describes each
type of display memory.
ROM for display (addresses 1000016 to 10FFF16)
The CRT display ROM contains dot pattern data for characters to be
displayed. For characters stored in this ROM to be actually displayed,
it is necessary to specify them by writing the character code inherent
to each character (code determined based on the addresses in the
CRT display ROM) into the CRT display RAM. The character code
list is shown in Table 7.
The CRT display ROM has a capacity of 4 K bytes. Since 32 bytes
are required for 1 character data, the ROM can stores up to 128
kinds of characters.
The CRT display ROM space is broadly divided into 2 areas. The
[vertical 16 dots] ! [horizontal (left side) 8 dots] data of display char-
acters are stored in addresses 1000016 to 107FF16; the [vertical 16
dots] ! [horizontal (right side) 4 dots] data of display characters are
stored in addresses 1080016 to 10FFF16 (refer to Figure 42). Note
however that the high-order 4 bits in the data to be written to ad-
dresses 1080016 to 10FFF16 must be set to “1” (by writing data “FX16”).
10XX016
+80016
0
000
00
10
00
01
00
1
0
00
10
00
0
1
00
10
0
01
00
0
1
01
11
00
1
10
00
10
00
10
00
0
001
01
00
10
0
1
11
00
0
00
0
00
0
00
0
00
0
00
0
00
0
10
0
10
0
10
0
01
0
01
0
01
0
00
0
00
0
00
0
10XXF16
+80016
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
11
1
b7
b0
b7
b0
b3
10XX016
10XXF16
0
00
0
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