參數(shù)資料
型號: TMP90C051
廠商: Toshiba Corporation
元件分類: 通用總線功能
英文描述: High Speed CMOS 8-bit Microcontroller,Integrating DMA, DRAM Controller,Serial Interface, Timer/Event Counter(高速 CMOS 8位微控制器(芯片集成了DMA,DRAM控制器,串行接口,定時器/事件計數(shù)器))
中文描述: 高速CMOS 8位微控制器,集成的DMA,DRAM控制器,串行接口,定時器/事件計數(shù)器(高速的CMOS 8位微控制器(DMA的芯片集成了,內(nèi)存控制器,串行接口,定時器/事件計數(shù)器))
文件頁數(shù): 18/158頁
文件大小: 4573K
代理商: TMP90C051
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TOSHIBA CORPORATION
TMP90C051
3.3.3 High-Speed Micro DMA Processing
The TMP90C051F has two built-in DMA channels called
HDMA.
HDMA has three times the processing capacity of
and is used for high-speed data transfers. HDMA execution
μ
DMA
time (decrease the value of transfer number and the value is
not “0” data) is 14 states, regardless of whether the 1-byte
transfer mode or 2-byte transfer mode is used. HDMA and
micro DMA transfer speeds.
Table 3.3 (3) shows the high-speed micro.
* At 1-byte transfer mode.
Table 3.3 (3) Transfer Speeds
fxtal (MHz)
HDMA
Micro DMA
10
2.8
μ
μ
μ
s
9.2
μ
μ
μ
s
12.5
2.24
s
7.36
s
16
1.75
s
5.75
s
Table 3.3 (4) Shows the HDMA function
Number of channels
2
Transfer speed
14 states (for 1 byte) or 18 states (for 2 bytes)
Start method
By interrupt (all external and internal interrupt sources)
Transfer mode
1 byte transfer or 2 byte transfer
Address output method
Dual address (source/destination)
Access area
0 ~ 8-M byte memory area (64k-byte units)
(1)
HDMA Setting Registers
The following describes the registers required for
HDMA operation.
(a) DMAS0, 1: source address register (16-bit)
(b) DMA0, 1: Destination address register (16-bit)
(c) DMAC0, 1: byte count register (16-bit)
Sets the number of bytes to be transferred.
The set value is decremented (–1) for each HDMA
started. A generation purpose interrupt is when the
value reaches “0”.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TMP90C051F 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
TMP90C141 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
TMP90C141F 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
TMP90C141N 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
TMP90C400 制造商:未知廠家 制造商全稱:未知廠家 功能描述: