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参数资料
| 型号： | M30240M5-XXXFP |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP80 |
| 封装： | 0.80 MM PITCH, PLASTIC, QFP-80 |
| 文件页数： | 100/139页 |
| 文件大小： | 1453K |
| 代理商： | M30240M5-XXXFP |
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63
Mitsubishi microcomputers
M30240 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Specifications REV. G
Specifications in this manual are tentative and subject to change
DMAC
Figure 1.56: DMAC register (3)
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
and the software waits are inserted.
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 address-
es, there is one more source read cycle and destination write cycle than when the source and destination both
start at even addresses.
Calculations
Any combination of even or odd transfer read and write addresses is possible. Table 1.16 show the number
of DMAC transfer cycles. Table 1.17 shows the corresponding coefficient values. Figure 1.57 shows an ex-
ample of the transfer cycle for a source read.
The number of DMAC transfer cycles can be calculated as follows:
b7
b0
b7
b0
(b8)
(b15)
Function
RW
Transfer counter
Set a value one less than the transfer count
Symbol
Address
When reset
TCR0
002916, 002816
Indeterminate
TCR1
003916, 003816
Indeterminate
DMAi transfer counter (i = 0, 1)
Transfer count
specification
000016 to FFFF16
b7
(b23)
b3
b0
b7
b0
b7
b0
(b8)
(b16)(b15)
(b19)
Function
RW
Source pointer
Stores the source address
Symbol
Address
When reset
SAR0
002216 to 002016
Indeterminate
SAR1
003216 to 003016
Indeterminate
DMAi source pointer (i = 0, 1)
Transfer count
specification
0000016 to FFFFF16
Nothing is assigned.
Symbol
Address
When reset
DAR0
002616 to 002416
Indeterminate
DAR1
003616 to 003416
Indeterminate
b3
b0
b7
b0
b7
b0
(b8)
(b15)
(b16)
(b19)
Function
RW
Destination pointer
Stores the destination address
DMAi destination pointer (i = 0, 1)
Transfer count
specification
0000016 to FFFFF16
b7
(b23)
Nothing is assigned.
Write "0" when writing to these bits. If read, the value is "0".
相关PDF资料 |
PDF描述 |
|---|---|
| M30240M6-XXXXFP | 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP80 |
| M30240ECFP | 16-BIT, OTPROM, 12 MHz, MICROCONTROLLER, PQFP80 |
| M30240M5-XXXXFP | 16-BIT, MROM, 12 MHz, MICROCONTROLLER, PQFP80 |
| M30240M6-XXXXFP | 16-BIT, OTPROM, MICROCONTROLLER, PQFP80 |
| M30240ECFP | 16-BIT, OTPROM, MICROCONTROLLER, PQFP80 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| M30240M6 | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240M6-XXXFP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240M7 | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240M7-XXXFP | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
| M30240M8 | 制造商:MITSUBISHI 制造商全称:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER |
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