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参数资料
| 型号： | M34508G4H-XXXFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO20 |
| 封装： | 5.30 X12.60 MM, 1.27 MM PITCH, PLASTIC, SOP-20 |
| 文件页数： | 10/32页 |
| 文件大小： | 1049K |
| 代理商： | M34508G4H-XXXFP |
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Rev.1.03
2009.07.27
page 18 of 140
REJ03B0148-0103
4508 Group
DATA MEMORY (RAM)
1 word of RAM is composed of 4 bits, but 1-bit manipulation (with
the SB j, RB j, and SZB j instructions) is enabled for the entire
memory area. A RAM address is specified by a data pointer. The
data pointer consists of registers Z, X, and Y. Set a value to the
data pointer certainly when executing an instruction to access
RAM.
Table 2 shows the RAM size. Figure 12 shows the RAM map.
Note
Register Z of data pointer is undefined after system is released
from reset.
Also, registers Z, X and Y are undefined in the RAM back-up. After
system is returned from the RAM back-up, set these registers.
Fig. 12 RAM map
Table 2 RAM size
Part number
M34508G4
M34508G4H
RAM size
256 words 4 bits (1024 bits)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
0
1
7
23
6
...
15
........
Register
Y
Register Z
Register X
RAM 256 words 4 bits (1024 bits)
相关PDF资料 |
PDF描述 |
|---|---|
| M34508G4-XXXFP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO20 |
| M34508G4FP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO20 |
| M34508G4-XXXGP | 4-BIT, MROM, 6 MHz, MICROCONTROLLER, PDSO20 |
| M34509G4FP | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDSO24 |
| M34509G4HFP | 4-BIT, OTPROM, 6 MHz, MICROCONTROLLER, PDSO24 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M34508G4H-XXXGP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34508G4-XXXFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34508G4-XXXGP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34509G4FP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
| M34509G4HFP | 制造商:RENESAS 制造商全称:Renesas Technology Corp 功能描述:SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER |
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