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參數資料
型號: W77E516
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: 26/85頁
文件大?。?/td> 596K
代理商: W77E516
Preliminary W77E516
- 26 -
WS: Wait State Signal Enable. Setting this bit enables the WAIT signal on P4.0. The device will
sample the wait state control signal WAIT via P4.0 during MOVX instruction. This bit is
time access protected.
TA
REG
C7H
C2H
8EH
WSCON
CKCON REG
MOV
TA, #AAH
MOV
TA, #55H
ORL
WSCON, #10000000B; Set WS bit and stretch value = 0 to enable wait signal.
REG
Power Management Register
Bit:
7
6
5
4
3
2
1
0
CD1
CD0
SWB
-
-
ALE-OFF
-
DME0
Mnemonic: PMR
Address: C4h
CD1, CD0: Clock Divide Control. These bit selects the number of clocks required to generate one
machine cycle. There are three modes including divide by 4, 64 or 1024. Switching
between modes must first go back divide by 4 mode. For instance, to go from 64 to
1024 clocks/machine cycle the device must first go from 64 to 4 clocks/machine cycle,
and then from 4 to 1024 clocks/machine cycle.
CD1,
0
0
1
1
CD0
0
1
0
1
Clocks/machine Cycle
Reserved
4
64
1024
SWB: Switchback Enable. Setting this bit allows an enabled external interrupt or serial port activity
to force the CD1, CD0 to divide by 4 state (0,1). The device will switch modes at the start of
the jump to interrupt service routine while a external interrupt is enabled and actually
recognized by micro controller. While a serial port reception, the switchback occurs at the
start of the instruction following the falling edge of the start bit.
ALE0FF: This bit disables the expression of the ALE signal on the device pin during all on-board
program and data memory accesses. External memory accesses will automatically
enable ALE independent of ALEOFF.
0 = ALE expression is enable; 1 = ALE expression is disable
DME0: This bit determines the on-chip MOVX SRAM to be enabled or disabled. Set this bit to 1 will
enable the on-chip 1KB MOVX SRAM.
相關PDF資料
PDF描述
W77E516-25 8-BIT MICROCONTROLLER
W77E516-40 8-BIT MICROCONTROLLER
W77E516F-25 8-BIT MICROCONTROLLER
W77E516F-40 8-BIT MICROCONTROLLER
W77E516P-25 8-BIT MICROCONTROLLER
相關代理商/技術參數
參數描述
W77E516-25 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W77E516-40 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W77E516A 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER
W77E516A40DL 功能描述:IC MCU 8-BIT 64K FLASH 40-DIP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:W77 標準包裝: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 外圍設備:POR,PWM,WDT 輸入/輸出數:40 程序存儲器容量:- 程序存儲器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數據轉換器:A/D 8x10b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC(J 形引線) 包裝:帶卷 (TR)
W77E516A40FL 功能描述:IC MCU 8-BIT 64K FLASH 44-QFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:W77 標準包裝: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 外圍設備:POR,PWM,WDT 輸入/輸出數:40 程序存儲器容量:- 程序存儲器類型:ROMless EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數據轉換器:A/D 8x10b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-LCC(J 形引線) 包裝:帶卷 (TR)