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參數資料
型號: W77E516P-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, 40 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數: 48/85頁
文件大?。?/td> 596K
代理商: W77E516P-25
Preliminary W77E516
- 48 -
Wait State Control Signal
Either with the software using stretch value to change the required machine cycle of MOVX instruction,
the W77E516 provides another hardware signal WAIT to implement the wider duration of external
data access timing. This wait state control signal is the alternate function of P4.0 such that it can only
be invoked to 44-pin PLCC/QFP package type. The wait state control signal can be enabled by setting
WS (ROMMAP.7) bit. When enabled, the setting of stretch value decides the minimum length of
MOVX instruction cycle and the device will sample the WAIT pin at each C3 state before the rising
edge of read/write strobe signal during MOVX instruction. Once this signal being recongnized, one
more machine cycle (wait state cycle) will be inserted into next cycle. The inserted wait state cycles are
unlimited, so the MOVX instruction cycle will end in which the wait state control signal is deactivated.
Using wait state control signal allows a dynamically access timimg to a selected external peripheral.
The WS bit is accessed by the Timed Access (TA register) Protection procedure.
Wait State Control Signal Timing (when Stretch = 1)
C2 C3
C4
C1
CLOCK
ALE
PSEN
ADDRESS
RD / WR
C2 C3
C4
C1
C2 C3
C4
C1
C2 C3
C4
C1
C2 C3
C4
C1
MOVX Instruction
MCycle
SCycle
WCycle
Third
WAIT
sample
WAIT
sample WAIT
Extended duration
original rising edge
Wait State Control Signal Timing (when Stretch = 2)
C2 C3
C4
C1
CLOCK
ALE
PSEN
ADDRESS
RD / WR
C2 C3
C4
C1
C2 C3
C4
C1
C2 C3
C4
C1
C3
C4
C2
C1
MOVX Instruction
MCycle
SCycle
Wait-State
Cycle
Third
WAIT
sample
WAIT
sample WAIT
Extended duration
original rising edge
C2
C1
Fourth
Cycle
相關PDF資料
PDF描述
W77E516P-40 8-BIT MICROCONTROLLER
W77E532 8 BIT MICROCONTROLLER
W77E58 8 BIT MICROCONTROLLER
W77E58-25 8 BIT MICROCONTROLLER
W77E58-40 8 BIT MICROCONTROLLER
相關代理商/技術參數
參數描述
W77E516P-40 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W77E532 制造商:WINBOND 制造商全稱:Winbond 功能描述:8 BIT MICROCONTROLLER
W77E532_07 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W77E532A 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W77E532A40DL 功能描述:IC MCU 8-BIT 128KB FLASH 40-DIP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:W77 產品培訓模塊:CAN Basics Part-1 CAN Basics Part-2 Electromagnetic Noise Reduction Techniques Part 1 M16C Product Overview Part 1 M16C Product Overview Part 2 標準包裝:1 系列:M16C™ M32C/80/87 核心處理器:M32C/80 芯體尺寸:16/32-位 速度:32MHz 連通性:EBI/EMI,I²C,IEBus,IrDA,SIO,UART/USART 外圍設備:DMA,POR,PWM,WDT 輸入/輸出數:121 程序存儲器容量:384KB(384K x 8) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:24K x 8 電壓 - 電源 (Vcc/Vdd):3 V ~ 5.5 V 數據轉換器:A/D 34x10b,D/A 2x8b 振蕩器型:內部 工作溫度:-20°C ~ 85°C 封裝/外殼:144-LQFP 包裝:托盤 產品目錄頁面:749 (CN2011-ZH PDF) 配用:R0K330879S001BE-ND - KIT DEV RSK M32C/87