參數(shù)資料
型號(hào)： ST2202
廠商： Electronic Theatre Controls, Inc.
英文描述： 8 BIT Integrated Microcontroller with 256K Bytes ROM
中文描述： 8位微控制器集成256K字節(jié)ROM的
文件頁數(shù)： 55/65頁
文件大?。?/td> 1946K
代理商： ST2202
Sitronix
ST2202
Ver 2.0a
55/65
2003-May-05
1
1
9
9
.
.
D
D
I
I
R
R
E
E
C
C
T
T
M
M
E
E
M
M
O
O
R
R
Y
Y
A
A
C
C
C
C
E
E
S
S
S
S
(
(
D
D
M
M
A
A
)
)
To speed up the memory access of this system, a
sequential direct memory access (DMA) controller is
designed-in. DMA can perform memory transfer function
more efficient than CPU does. While DMA working, data
ROM register (DRR) will disable and DMA use DMA
memory bank register (DMR) to access ROM. After DMA
complete, ROM bank control still return to DRR.
With the help of DMR can make DMS across bank
boundary smoothly, but DMR is only valid for DMS.
The
DMR can automatic increases when DMS across bank
boundary.
Note: Location of source data can not fall in the range
of internal SRAM( that is the range of
0100H~FFFH).
LCD
DMA
CPU
SRAM
ROM
LCD_CTL
FIGURE 19-1 System Block Diagram
19.1 DMA Control Register
The control register is shown as following:
TABLE 19-2 DMA Control Register (LCTL)
Bit 6
Bit 5
Bit 4
DMS[6]
DMS[5]
DMS[4]
DMS[15] DMS[14] DMS[13] DMS[12] DMS[11] DMS[10] DMS[9] DMS[8]
DMD[7]
DMD[6]
DMD[5]
DMD[4]
DMD[3]
DMD[15] DMD[14] DMD[13] DMD[12] DMD[11] DMD[10] DMD[9] DMD[8]
DCNT[7] DCNT[6] DCNT[5] DCNT[4] DCNT[3] DCNT[2] DCNT[1] DCNT[0]
-
-
-
DMAM DCNT[11] DCNT[10] DCNT[9] DCNT[8] - - -
DMR[7]
DMR[6]
DMR[5]
DMR[4]
DMR[3]
-
-
-
-
-
Address Name R/W
$028
DMSL
$029
DMSH
$02A
DMDL
$02B DMDH
$02C DCNTL
$02D DCNTH
$036
DMRL
$037
DMRH
DMS[15:0] :
DMA source data starting address register
DMD[15:0]:
DMA destination data starting address register
DCNT[11:0]:
DMA moving data byte counter register
DMR[10:0]:
DMA source data bank register (
DMR
works only when
DMS
is in the range from 8000h to FFFFh).
DMAM
(
DCNTH[4]
)
:
DMA destination address increasing mode selection bit
0 = Destination address increases automatically.
1 = Destination address is fixed.
Bit 7
DMS[7]
Bit 3
DMS[3]
Bit 2
DMS[2]
Bit 1
DMS[1] DMS[0]
Bit 0
Default
W
W
W
W
W
W
R/W
R/W
DMD[2]
DMD[1] DMD[0]
DMR[2]
DMR[10] DMR[9] DMR[8] - - - - -000
DMR[1] DMR[0] 0000 0000
The DMA always move (DCNT+1) bytes of data. DMA will
start right after CPU write data into register DCNTL. During
the DMA operation, the CPU hold, until the DMA transfer
completed. The DMR register reset to “$00” on real chip,
but Emulation Board is “unknown”, so recommend initial
DMR register before use.
Before Read/Write you have to
initial the PRR, DRR, DMR register when system reset.
相關(guān)PDF資料
PDF描述
ST2221C 16 BIT CONSTANT CURRENT LED DRIVERS
ST2225A-SS3 LED DISPLAY DRIVER
ST2225A LED DISPLAY DRIVER
ST2225A-D LED DISPLAY DRIVER
st302 PHOTOTRANSISTORS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ST2202A 制造商:SITRONIX 制造商全稱:SITRONIX 功能描述:8 BIT Integrated Microcontroller with 256K Bytes ROM
ST2203U 制造商:SITRONIX 制造商全稱:SITRONIX 功能描述:8-Bit Microcontroller With 2K Bytes RAM
ST2204 制造商:SITRONIX 制造商全稱:SITRONIX 功能描述:8 BIT Integrated Microcontroller with 512K Bytes ROM
ST220-50T2KI 功能描述:鉭質(zhì)電容器-濕式 ST220-50T2KI RoHS:否 制造商:Vishay/Tansitor 電容:2800 uF 電壓額定值:35 V ESR:0.35 Ohms 容差:20 % 端接類型:Axial 工作溫度范圍:- 55 C to + 85 C 制造商庫存號(hào):T4 Case 外殼直徑:9.52 mm 外殼長度:26.97 mm 外殼寬度: 外殼高度: 系列:STE 產(chǎn)品:Tantalum Wet Hermetically Sealed 封裝:Bulk
ST220-50T2MI 功能描述:鉭質(zhì)電容器-濕式 220UF 50V 20% T2 RoHS:否 制造商:Vishay/Tansitor 電容:2800 uF 電壓額定值:35 V ESR:0.35 Ohms 容差:20 % 端接類型:Axial 工作溫度范圍:- 55 C to + 85 C 制造商庫存號(hào):T4 Case 外殼直徑:9.52 mm 外殼長度:26.97 mm 外殼寬度: 外殼高度: 系列:STE 產(chǎn)品:Tantalum Wet Hermetically Sealed 封裝:Bulk
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*