- 您現在的位置：買賣IC網 > PDF目錄371043 > MC68332AVFC16 (MOTOROLA INC) 32-Bit Modular Microcontroller PDF資料下載
參數資料
| 型號： | MC68332AVFC16 |
| 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, PQFP132 |
| 封裝： | PLASTIC, QFP-132 |
| 文件頁數： | 27/88頁 |
| 文件大小： | 446K |
| 代理商： | MC68332AVFC16 |
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頁當前第27頁第28頁第29頁第30頁第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
27
3.4.3 Address Bus
Address bus signals ADDR[23:0] define the address of the most significant byte to be transferred during
a bus cycle. The MCU places the address on the bus at the beginning of a bus cycle. The address is
valid while AS is asserted.
3.4.4 Address Strobe
AS is a timing signal that indicates the validity of an address on the address bus and the validity of many
control signals. It is asserted one-half clock after the beginning of a bus cycle.
3.4.5 Data Bus
Data bus signals DATA[15:0] make up a bidirectional, non-multiplexed parallel bus that transfers data
to or from the MCU. A read or write operation can transfer 8 or 16 bits of data in one bus cycle. During
a read cycle, the data is latched by the MCU on the last falling edge of the clock for that bus cycle. For
a write cycle, all 16 bits of the data bus are driven, regardless of the port width or operand size. The
MCU places the data on the data bus one-half clock cycle after AS is asserted in a write cycle.
3.4.6 Data Strobe
Data strobe (DS) is a timing signal. For a read cycle, the MCU asserts DS to signal an external device
to place data on the bus. DS is asserted at the same time as AS during a read cycle. For a write cycle,
DS signals an external device that data on the bus is valid. The MCU asserts DS one full clock cycle
after the assertion of AS during a write cycle.
3.4.7 Bus Cycle Termination Signals
During bus cycles, external devices assert the data transfer and size acknowledge signals (DSACK1
and DSACK0). During a read cycle, the signals tell the MCU to terminate the bus cycle and to latch data.
During a write cycle, the signals indicate that an external device has successfully stored data and that
the cycle can end. These signals also indicate to the MCU the size of the port for the bus cycle just com-
pleted. (Refer to 3.4.9 Dynamic Bus Sizing.)
The bus error (BERR) signal is also a bus cycle termination indicator and can be used in the absence
of DSACK1 and DSACK0 to indicate a bus error condition. It can also be asserted in conjunction with
these signals, provided it meets the appropriate timing requirements. The internal bus monitor can be
used to generate the BERR signal for internal and internal-to-external transfers. When BERR and HALT
are asserted simultaneously, the CPU takes a bus error exception.
Autovector signal (AVEC) can terminate external IRQ pin interrupt acknowledge cycles. AVEC indicates
that the MCU will internally generate a vector number to locate an interrupt handler routine. If it is con-
tinuously asserted, autovectors will be generated for all external interrupt requests. AVEC is ignored
during all other bus cycles.
Table 9 CPU32 Address Space Encoding
FC2
0
0
0
0
1
1
1
1
FC1
0
0
1
1
0
0
1
1
FC0
0
1
0
1
0
1
0
1
Address Space
Reserved
User Data Space
User Program Space
Reserved
Reserved
Supervisor Data Space
Supervisor Program Space
CPU Space
相關PDF資料 |
PDF描述 |
|---|---|
| MC68332CFC16 | 32-Bit Modular Microcontroller |
| MC68332CFC20 | 32-Bit Modular Microcontroller |
| MC68332MFC16 | 32-Bit Modular Microcontroller |
| MC68332MFC20 | 32-Bit Modular Microcontroller |
| MC68332TS | 32-Bit Modular Microcontroller |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MC68332AVFC20 | 制造商:Rochester Electronics LLC 功能描述:32BIT MCU,2KRAM,TPU,QSM - Bulk 制造商:Motorola Inc 功能描述: 制造商:MOTOROLA 功能描述: |
| MC68332AVFV16 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller |
| MC68332AVFV20 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller |
| MC68332CFC16 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller |
| MC68332CFC20 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller |
發布緊急采購，3分鐘左右您將得到回復。