- 您現在的位置：買賣IC網 > PDF目錄363895 > W77LE58 (WINBOND ELECTRONICS CORP) 8 BIT MICROCONTROLLER PDF資料下載
參數資料
| 型號： | W77LE58 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8 BIT MICROCONTROLLER |
| 中文描述： | 8位微控制器 |
| 文件頁數： | 8/81頁 |
| 文件大小： | 657K |
| 代理商： | W77LE58 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁當前第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
Preliminary W77LE58
- 8 -
Timers
The W77LE58 has three 16-bit timers that are functionally similar to the timers of the 8052 family.
When used as timers, they can be set to run at either 4 clocks or 12 clocks per count, thus providing
the user with the option of operating in a mode that emulates the timing of the original 8052. The
W77LE58 has an additional feature, the watchdog timer. This timer is used as a System Monitor or as
a very long time period timer.
Interrupts
The Interrupt structure in the W77LE58 is slightly different from that of the standard 8052. Due to the
presence of additional features and peripherals, the number of interrupt sources and vectors has been
increased. The W77LE58 provides 12 interrupt resources with two priority level, including six external
interrupt sources, timer interrupts, serial I/O interrupts.
Data Pointers
The original 8052 had only one 16-bit Data Pointer (DPL, DPH). In the W77LE58, there is an
additional 16-bit Data Pointer (DPL1, DPH1). This new Data Pointer uses two SFR locations which
were unused in the original 8052. In addition there is an added instruction, DEC DPTR (op-code
A5H), which helps in improving programming flexibility for the user.
Power Management
Like the standard 80C52, the W77LE58 also has IDLE and POWER DOWN modes of operation. The
W77LE58 provides a new Economy mode which allow user to switch the internal clock rate divided by
either 4, 64 or 1024. In the IDLE mode, the clock to the CPU core is stopped while the timers, serial
ports and interrupts clock continue to operate. In the POWER DOWN mode, all the clock are stopped
and the chip operation is completely stopped. This is the lowest power consumption state.
On-chip Data SRAM
The W77LE58 has 1K Bytes of data space SRAM which is read/write accessible and is memory
mapped. This on-chip MOVX SRAM is reached by the MOVX instruction. It is not used for executable
program memory. There is no conflict or overlap among the 256 bytes Scratchpad RAM and the 1K
Bytes MOVX SRAM as they use different addressing modes and separate instructions. The on-chip
MOVX SRAM is enabled by setting the DME0 bit in the PMR register. After a reset, the DME0 bit is
cleared such that the on-chip MOVX SRAM is disabled, and all data memory spaces 0000H
FFFFH
access to the external memory.
MEMORY ORGANIZATION
The W77LE58 separates the memory into two separate sections, the Program Memory and the Data
Memory. The Program Memory is used to store the instruction op-codes, while the Data Memory is
used to store data or for memory mapped devices.
Program Memory
The Program Memory on the W77LE58 can be up to 64 Kbytes long. There is also on-chip ROM
which can be used similarly to that of the 8052, except that the ROM size is 32 Kbytes. All
instructions are fetched for execution from this memory area. The MOVC instruction can also access
this memory region. Exceeding the maximum address of on-chip ROM will access the external
memory.
相關PDF資料 |
PDF描述 |
|---|---|
| W77LE58-25 | 8 BIT MICROCONTROLLER |
| W77LE58F-25 | 8 BIT MICROCONTROLLER |
| W77LE58P-25 | 8 BIT MICROCONTROLLER |
| W78151 | 8-BIT Microcontroller(8位的微控制器) |
| W78L51F-24 | 8-BIT MICROCONTROLLER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| W77LE58_07 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W77LE58-25 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER |
| W77LE58F-25 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER |
| W77LE58P-25 | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER |
| W77M032A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
發布緊急采購，3分鐘左右您將得到回復。