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參數(shù)資料
| 型號(hào)： | W77IC32 |
| 元件分類(lèi)： | 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(yè)數(shù)： | 7/72頁(yè) |
| 文件大小： | 952K |
| 代理商： | W77IC32 |
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W77IC32
Publication Release Date: July 16, 2001
Revision A2
- 7 -
Timers
The W77IC32 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
W77IC32 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 W77IC32 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 W77IC32 provides 12 interrupt resources with two priority level, including six external
interrupt sources, timer interrupts, serial I/O interrupts and power-fail interrupt.
Data Pointers
The original 8052 had only one 16-bit Data Pointer (DPL, DPH). In the W77IC32, 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 W77IC32 also has IDLE and POWER DOWN modes of operation. The
W77IC32 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 W77IC32 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.
7. MEMORY ORGANIZATION
The W77IC32 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 W77IC32 can be up to 64Kbytes long. All instructions are fetched for
execution from this memory area. The MOVC instruction can also access this memory region.
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| W78C154-24 | 8-BIT MICROCONTROLLER |
| W78C154-33 | 8-BIT MICROCONTROLLER |
| W78C154-40 | 8-BIT MICROCONTROLLER |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W77IC32_06 | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:8-BIT MICROCONTROLLER |
| W77IC32-25 | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:8-BIT MICROCONTROLLER |
| W77IC32A25DL | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:8-BIT MICROCONTROLLER |
| W77IC32A25PL | 功能描述:IC MCU 8-BIT 1K SRAM 44-PLCC RoHS:是 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W77 標(biāo)準(zhǔn)包裝:250 系列:80C 核心處理器:8051 芯體尺寸:8-位 速度:16MHz 連通性:EBI/EMI，I²C，UART/USART 外圍設(shè)備:POR，PWM，WDT 輸入/輸出數(shù):40 程序存儲(chǔ)器容量:- 程序存儲(chǔ)器類(lèi)型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC（J 形引線） 包裝:帶卷 (TR) |
| W77IC32P-25 | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:8 BIT MICROCONTROLLER |
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