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参数资料
| 型号： | M30600E8GP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, OTPROM, 10 MHz, MICROCONTROLLER, PQFP100 |
| 封装： | 14 X 14 MM, 0.50 MM PITCH, PLASTIC, LQFP-100 |
| 文件页数： | 88/139页 |
| 文件大小： | 1782K |
| 代理商： | M30600E8GP |
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Mitsubishi microcomputers
M16C / 60 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
DMAC
52
(1) Transfer cycle
The transfer cycle consists of the bus cycle in which data is read from memory or from the SFR area
(source read) and the bus cycle in which the data is written to memory or to the SFR area (destination
write). The number of read and write bus cycles depends on the source and destination addresses. In
memory expansion mode and microprocessor mode, the number of read and write bus cycles also de-
pends on the level of the BYTE pin. Also, the bus cycle itself is longer when software waits are inserted.
(a) Effect of source and destination addresses
When 16-bit data is transferred on a 16-bit data bus, and the source and destination both start at odd
addresses, there are one more source read cycle and destination write cycle than when the source
and destination both start at even addresses.
(b) Effect of BYTE pin level
When transferring 16-bit data over an 8-bit data bus (BYTE pin = “H”) in memory expansion mode and
microprocessor mode, the 16 bits of data are sent in two 8-bit blocks. Therefore, two bus cycles are
required for reading the data and two are required for writing the data. Also, in contrast to when the
CPU accesses internal memory, when the DMAC accesses internal memory (internal ROM, internal
RAM, and SFR), these areas are accessed using the data size selected by the BYTE pin.
(c) Effect of software wait
When the SFR area or a memory area with a software wait is accessed, the number of cycles is
increased for the wait by 1 bus cycle. The length of the cycle is determined by BCLK.
Figure 1.36 shows an example of the transfer cycles for a source read. For convenience, the destination
write cycle is shown as one cycle and the source read cycles for the different conditions are shown. In
reality, the destination write cycle is subject to the same conditions as the source read cycle, with the
transfer cycle changing accordingly. When calculating the transfer cycle, remember to apply the respec-
tive conditions to both the destination write cycle and the source read cycle. For example (2) in Figure
1.36, if data is being transferred in 16-bit units on an 8-bit bus, two bus cycles are required for both the
source read cycle and the destination write cycle.
相关PDF资料 |
PDF描述 |
|---|---|
| M30600M8-XXXGP | 16-BIT, MROM, MICROCONTROLLER, PQFP100 |
| M30610MCA-XXXGP | 16-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP100 |
| M30610ECFS | 16-BIT, UVPROM, 10 MHz, MICROCONTROLLER, CQCC100 |
| M30612M4A-XXXGP | 16-BIT, MROM, 10 MHz, MICROCONTROLLER, PQFP100 |
| M30610ECGP | 16-BIT, OTPROM, 10 MHz, MICROCONTROLLER, PQFP100 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M30-6011046 | 制造商:Harwin 功能描述: |
| M30-6011506 | 功能描述:集管和线壳 15 + 15 DIL SMT PLUG RoHS:否 产品种类:1.0MM Rectangular Connectors 产品类型:Headers - Pin Strip 系列:DF50 触点类型:Pin (Male) 节距:1 mm 位置/触点数量:16 排数:1 安装风格:SMD/SMT 安装角:Right 端接类型:Solder 外壳材料:Liquid Crystal Polymer (LCP) 触点材料:Brass 触点电镀:Gold 制造商:Hirose Connector |
| M30-6011546 | 功能描述:集管和线壳 30P Male Dual Row Vertical SMT RoHS:否 产品种类:1.0MM Rectangular Connectors 产品类型:Headers - Pin Strip 系列:DF50 触点类型:Pin (Male) 节距:1 mm 位置/触点数量:16 排数:1 安装风格:SMD/SMT 安装角:Right 端接类型:Solder 外壳材料:Liquid Crystal Polymer (LCP) 触点材料:Brass 触点电镀:Gold 制造商:Hirose Connector |
| M30-6012046 | 制造商:Harwin 功能描述: |
| M3060C | 制造商:VISHAY 制造商全称:Vishay Siliconix 功能描述:Dual Common-Cathode Schottky Rectifier |
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