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參數(shù)資料
| 型號： | W77LE58F-25 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8 BIT MICROCONTROLLER |
| 中文描述： | 8-BIT, FLASH, 25 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | QFP-44 |
| 文件頁數(shù)： | 8/81頁 |
| 文件大?。?/td> | 657K |
| 代理商： | W77LE58F-25 |
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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(guān)PDF資料 |
PDF描述 |
|---|---|
| W77LE58P-25 | 8 BIT MICROCONTROLLER |
| W78151 | 8-BIT Microcontroller(8位的微控制器) |
| W78L51F-24 | 8-BIT MICROCONTROLLER |
| W78L51 | 8-BIT MICROCONTROLLER |
| W78L51-24 | 8-BIT MICROCONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| W77M032A25DL | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W77M032A25FL | 功能描述:IC MCU 8-BIT 1K SRAM 44-PQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W77 標(biāo)準(zhǔn)包裝:60 系列:PSOC® 3 CY8C38xx 核心處理器:8051 芯體尺寸:8-位 速度:67MHz 連通性:EBI/EMI，I²C，LIN，SPI，UART/USART 外圍設(shè)備:電容感應(yīng)，DMA，LCD，POR，PWM，WDT 輸入/輸出數(shù):25 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:2K x 8 RAM 容量:8K x 8 電壓 - 電源 (Vcc/Vdd):1.71 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 2x20b，D/A 4x8b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:48-VFQFN 裸露焊盤 包裝:托盤 |
| W77M032A25PL | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
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