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參數資料
| 型號： | MC68332MFV16 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-Bit Modular Microcontroller |
| 中文描述： | 32-BIT, 16.78 MHz, MICROCONTROLLER, PQFP144 |
| 封裝： | QFP-144 |
| 文件頁數： | 34/88頁 |
| 文件大小： | 446K |
| 代理商： | MC68332MFV16 |
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MOTOROLA
34
MC68332
MC68332TS/D
CSORBT, the option register for CSBOOT, contains special reset values that support bootstrap opera-
tions from peripheral memory devices.
The following bit descriptions apply to both CSORBT and CSOR[10:0] option registers.
MODE — Asynchronous/Synchronous Mode
0 = Asynchronous mode selected (chip-select assertion determined by internal or external bus con-
trol signals)
1 = Synchronous mode selected (chip-select assertion synchronized with ECLK signal)
In asynchronous mode, the chip select is asserted synchronized with AS or DS.
The DSACK field is not used in synchronous mode because a bus cycle is only performed as a syn-
chronous operation. When a match condition occurs on a chip select programmed for synchronous op-
eration, the chip select signals the EBI that an ECLK cycle is pending.
BYTE — Upper/Lower Byte Option
This field is used only when the chip-select 16-bit port option is selected in the pin assignment register.
The following table lists upper/lower byte options.
R/W — Read/Write
This field causes a chip select to be asserted only for a read, only for a write, or for both read and write.
Refer to the following table for options available.
STRB — Address Strobe/Data Strobe
0 = Address strobe
1 = Data strobe
This bit controls the timing for assertion of a chip select in asynchronous mode. Selecting address
strobe causes chip select to be asserted synchronized with address strobe. Selecting data strobe caus-
es chip select to be asserted synchronized with data strobe.
CSORBT
—Chip-Select Option Register Boot ROM
$YFFA4A
15
14
13
12
11
10
9
6
5
4
3
1
0
MODE
BYTE
R/W
STRB
DSACK
SPACE
IPL
AVEC
RESET:
0
1
1
1
1
0
1
1
0
1
1
1
0
0
0
0
CSOR[10:0]
—Chip-Select Option Registers
$YFFA4E–$YFFA76
15
14
13
12
11
10
9
6
5
4
3
1
0
MODE
BYTE
R/W
STRB
DSACK
SPACE
IPL
AVEC
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Byte
00
01
10
11
Description
Disable
Lower Byte
Upper Byte
Both Bytes
R/W
00
01
10
11
Description
Reserved
Read Only
Write Only
Read/Write
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| MC68332 | 32-Bit Modular Microcontroller |
| MC68332ACFC16 | 32-Bit Modular Microcontroller |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MC68332MFV20 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller |
| MC68332TS | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller |
| MC68332VFC16 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller |
| MC68332VFC20 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller |
| MC68332VFV16 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller |
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