參數(shù)資料
型號: PSD401A2-C-90JI
廠商: 意法半導體
英文描述: Low Cost Field Programmable Microcontroller Peripherals
中文描述: 低成本現(xiàn)場可編程微控制器外圍設備
文件頁數(shù): 45/123頁
文件大小: 657K
代理商: PSD401A2-C-90JI
PSD4XX Famly
42
Table 7. 8-Bit Data Bus
Table 8. 16-Bit Data Bus With BHE
WRH
0
WRL
0
D15 – D8
Odd byte
D7 – D0
Even byte
0
1
Odd byte
1
0
Even byte
Table 9. 16-Bit Data Bus With WRHand WRL
SIZ0
A0
D15 – D8
D7 – D0
0
0
Even byte
Odd byte
1
0
Even byte
1
1
Odd byte
Table 10. 16-Bit Data Bus With SIZ0, A0
LDS
UDS
D15 – D8
D7 – D0
0
0
Even byte
Odd byte
1
0
Even byte
0
1
Odd byte
Table 11. 16-Bit Data Bus With UDS, LDS
9.2.4 Data Byte Enable
Microcontrollers have different data byte orientations with regard to the data bus. The
following tables show how the PSD4XX handles the byte enable under different bus
configurations. Even byte refers to locations with address A0 equal to “0”, and odd byte as
locations with A0 equal to “1”.
BHE
A0
D15 – D8
D7 – D0
0
0
Odd byte
Even byte
0
1
Odd byte
1
0
Even byte
BHE
A0
D7 – D0
X
0
Even Byte
X
1
Odd Byte
The PSD4XX
Architecture
(cont.)
相關PDF資料
PDF描述
PSD401A2-C-90UI Low Cost Field Programmable Microcontroller Peripherals
PSD413A1-C-15J BBG ECL OR DUAL 3INPUT; Package: 20 LEAD PLLC; No of Pins: 20; Container: Tape and Reel; Qty per Container: 500
PSD413A1-C-15L 3-Input 3-Output OR Gate; Package: SOEIAJ-16; No of Pins: 16; Container: Rail; Qty per Container: 50
PSD401A1-C-12J HDC-HD-15BCM RoHS Compliant: Yes
PSD401A1-C-15J Low Cost Field Programmable Microcontroller Peripherals
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