- 您現在的位置：買賣IC網 > PDF目錄98141 > SPAKXC16Z1CFC25 (MOTOROLA INC) 16-BIT, 25 MHz, MICROCONTROLLER, PQFP132 PDF資料下載
參數資料
| 型號： | SPAKXC16Z1CFC25 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 16-BIT, 25 MHz, MICROCONTROLLER, PQFP132 |
| 封裝： | PLASTIC, SMT-132 |
| 文件頁數： | 150/200頁 |
| 文件大?。?/td> | 1383K |
| 代理商： | SPAKXC16Z1CFC25 |
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頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁當前第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁第159頁第160頁第161頁第162頁第163頁第164頁第165頁第166頁第167頁第168頁第169頁第170頁第171頁第172頁第173頁第174頁第175頁第176頁第177頁第178頁第179頁第180頁第181頁第182頁第183頁第184頁第185頁第186頁第187頁第188頁第189頁第190頁第191頁第192頁第193頁第194頁第195頁第196頁第197頁第198頁第199頁第200頁
MC68HC16Z1
MOTOROLA
MC68HC16Z1TS/D
53
3.5 External Bus Interface
The external bus interface (EBI) transfers information between the internal MCU bus and external de-
vices when the MC68HC16Z1 is operating in expanded modes. In fully expanded mode, the external
bus has 24 address lines and 16 data lines. In partially expanded mode, the external bus has 24 ad-
dress lines and 8 data lines. Because the CPU16 in the MC68HC16Z1 drives only 20 of the 24 IMB
address lines, ADDR[23:20] follow the output state of ADDR19.
The EBI provides dynamic sizing between 8-bit and 16-bit data accesses. It supports byte, word, and
long-word transfers. Ports are accessed through the use of asynchronous cycles controlled by the data
transfer (SIZ1 and SIZ0) and data size acknowledge pins (DSACK1 and DSACK0). In fully expanded
mode, both 8-bit and 16-bit data ports can be accessed; in partially expanded mode, only 8-bit ports
can be accessed. Multiple bus cycles may be required for a transfer to an 8-bit port.
Port width is the maximum number of bits accepted or provided during a bus transfer. External devices
must follow the handshake protocol described below. Control signals indicate the beginning of the cycle,
the address space, the size of the transfer, and the type of cycle. The selected device controls the length
of the cycle. Strobe signals, one for the address bus and another for the data bus, indicate the validity
of an address and provide timing information for data. The EBI operates in an asynchronous mode for
any port width.
To add flexibility and minimize the necessity for external logic, MCU chip select logic can be synchro-
nized with EBI transfers. Chip select logic can also provide internally-generated bus control signals for
these accesses. Refer to 3.5.13 Chip Selects for more information.
3.5.1 Bus Control Signals
The CPU initiates a bus cycle by driving the address, size, function code, and read/write outputs. At the
beginning of the cycle, size signals SIZ0 and SIZ1 are driven along with the function code signals. The
size signals indicate the number of bytes remaining to be transferred during an operand cycle. They are
valid while the address strobe (AS) is asserted. The following table shows SIZ0 and SIZ1 encoding. The
read/write (R/W) signal determines the direction of the transfer during a bus cycle. This signal changes
state, when required, at the beginning of a bus cycle, and is valid while AS is asserted. R/W only tran-
sitions when a write cycle is preceded by a read cycle or vice versa. The signal can remain low for two
consecutive write cycles.
3.5.2 Function Codes
Function code signals FC[2:0] are automatically generated by the CPU16. The function codes can be
considered address extensions that automatically select one of eight address spaces to which an ad-
dress applies. These spaces are designated as either user or supervisor, and program or data spaces.
Because the CPU16 always operates in supervisor mode (FC2 always = 1), address spaces 0 to 3 are
not used. Address space 7 is designated CPU space. CPU space is used for control information not
normally associated with read or write bus cycles. Function codes are valid while AS is asserted.
Table 11 Size Signal Encoding
SIZ1
SIZ0
Transfer Size
0
1
Byte
1
0
Word
1
3 Byte
0
Long Word
Table 12 CPU16 Address Space Encoding
FC2
FC1
FC0
Address Space
1
0
Reserved
1
0
1
Data Space
1
0
Program Space
1
CPU Space
相關PDF資料 |
PDF描述 |
|---|---|
| SPAKXC16Z1VFV20 | 16-BIT, 20 MHz, MICROCONTROLLER, PQFP144 |
| SPAKXCF333CFT20 | 32-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP16 |
| SPAKXCF333MFT20 | 32-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP16 |
| SPAKXCF333VFT20 | 32-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP16 |
| SPC3010F | 24 Mbps, FIXED DISK CONTROLLER, PQFP100 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SPAKXC301GC100D | 制造商:Motorola Inc 功能描述: |
| SPAKXC301PW100D | 制造商:Motorola Inc 功能描述: |
| SPAKXC309AG100A | 功能描述:數字信號處理器和控制器 - DSP, DSC 24 BIT DSP PBFREE RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT |
| SPAKXC309GC100A | 制造商:Motorola 功能描述:MOTOROLA |
| SPAKXC309VF100A | 功能描述:IC DSP 24BIT 100MHZ 196-MAPBGA RoHS:否 類別:集成電路 (IC) >> 嵌入式 - DSP（數字式信號處理器） 系列:DSP563xx 標準包裝:40 系列:TMS320DM64x, DaVinci™ 類型:定點 接口:I²C，McASP，McBSP 時鐘速率:400MHz 非易失內存:外部 芯片上RAM:160kB 電壓 - 輸入/輸出:3.30V 電壓 - 核心:1.20V 工作溫度:0°C ~ 90°C 安裝類型:表面貼裝 封裝/外殼:548-BBGA，FCBGA 供應商設備封裝:548-FCBGA（27x27） 包裝:托盤 配用:TMDSDMK642-0E-ND - DEVELPER KIT W/NTSC CAMERA296-23038-ND - DSP STARTER KIT FOR TMS320C6416296-23059-ND - FLASHBURN PORTING KIT296-23058-ND - EVAL MODULE FOR DM642TMDSDMK642-ND - DEVELOPER KIT W/NTSC CAMERA |
發(fā)布緊急采購，3分鐘左右您將得到回復。