- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄371043 > MC68332MFV20 (MOTOROLA INC) 32-Bit Modular Microcontroller PDF資料下載
參數(shù)資料
| 型號： | MC68332MFV20 |
| 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, 20 MHz, MICROCONTROLLER, PQFP144 |
| 封裝： | QFP-144 |
| 文件頁數(shù)： | 31/88頁 |
| 文件大小： | 446K |
| 代理商： | MC68332MFV20 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁當(dāng)前第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁
MC68332
MC68332TS/D
MOTOROLA
31
3.5.1 Chip-Select Registers
Pin assignment registers CSPAR0 and CSPAR1 determine functions of chip-select pins. These regis-
ters also determine port size (8- or 16-bit) for dynamic bus allocation.
A pin data register (PORTC) latches discrete output data.
Blocks of addresses are assigned to each chip-select function. Block sizes of 2 Kbytes to 1 Mbyte can
be selected by writing values to the appropriate base address register (CSBAR). Address blocks for
separate chip-select functions can overlap.
Chip-select option registers (CSORBT and CSOR[10:0]) determine timing of and conditions for asser-
tion of chip-select signals. Eight parameters, including operating mode, access size, synchronization,
and wait state insertion can be specified.
Initialization code often resides in a peripheral memory device controlled by the chip-select circuits. A
set of special chip-select functions and registers (CSORBT, CSBARBT) is provided to support bootstrap
operation.
3.5.2 Pin Assignment Registers
The pin assignment registers (CSPAR0 and CSPAR1) contain pairs of bits that determine the function
of chip-select pins. The pin assignment encodings used in these registers are shown below.
CSPAR0 contains seven 2-bit fields that determine the functions of corresponding chip-select pins.
CSPAR0[15:14] are not used. These bits always read zero; writes have no effect. CSPAR0 bit 1 always
reads one; writes to CSPAR0 bit 1 have no effect.
Table 12 Pin Assignment Encodings
Bit Field
00
01
10
11
Description
Discrete Output
Alternate Function
Chip Select (8-Bit Port)
Chip Select (16-Bit Port)
CSPAR0
—Chip Select Pin Assignment Register 0
$YFFA44
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
CSPA0[6]
CSPA0[5]
CSPA0[4]
CSPA0[3]
CSPA0[2]
CSPA0[1]
CSBOOT
RESET:
0
0
DATA2
1
DATA2
1
DATA2
1
DATA1
1
DATA1
1
DATA1
1
1
DATA0
Table 13 CSPAR0 Pin Assignments
CSPAR0 Field
CSPA0[6]
CSPA0[5]
CSPA0[4]
CSPA0[3]
CSPA0[2]
CSPA0[1]
CSBOOT
Chip Select Signal
CS5
CS4
CS3
CS2
CS1
CS0
CSBOOT
Alternate Signal
FC2
FC1
FC0
BGACK
BG
BR
—
Discrete Output
PC2
PC1
PC0
—
—
—
—
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MC68332AVFC20 | 32-Bit Modular Microcontroller |
| MC68332AVFC16 | 32-Bit Modular Microcontroller |
| MC68332CFC16 | 32-Bit Modular Microcontroller |
| MC68332CFC20 | 32-Bit Modular Microcontroller |
| MC68332MFC16 | 32-Bit Modular Microcontroller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| MC68332VFV20 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。