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參數(shù)資料
| 型號： | W79E532 |
| 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(shù)： | 29/77頁 |
| 文件大小： | 523K |
| 代理商： | W79E532 |
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W79E532/W79L532
Publication Release Date: November 21, 2005
- 29 -
Revision A5
OPERAND
OPERAND
OPERAND
OP-CODE
Address A15-8
Address A15-8
Address A15-8
Address A15-8
A7-0
A7-0
A7-0
A7-0
Operand Fetch
Operand Fetch
Operand Fetch
Operand Fetch
Instruction Fetch
C2
C1
C4
C3
C2
C1
CLK
ALE
PSEN
AD7-0
PORT 2
C4
C3
C2
C1
C4
C3
C2
C1
C4
C3
C2
C1
C4
C3
OPERAND
A7-0
Address A15-8
Figure 7. Five Cycle Instruction Timing
8.1.1 External Data Memory Access Timing
The timing for the MOVX instruction is another feature of the W79E(L)532. In the standard 8032, the
MOVX instruction has a fixed execution time of 2 machine cycles. However in the W79E(L)532, the
duration of the access can be varied by the user.
The instruction starts off as a normal op-code fetch of 4 clocks. In the next machine cycle, the
W79E(L)532 puts out the address of the external Data Memory and the actual access occurs here.
The user can change the duration of this access time by setting the STRETCH value. The Clock
Control SFR (CKCON) has three bits that control the stretch value. These three bits are M2-0 (bits 2-0
of CKCON). These three bits give the user 8 different access time options. The stretch can be varied
from 0 to 7, resulting in MOVX instructions that last from 2 to 9 machine cycles in length. Note that the
stretching of the instruction only results in the elongation of the MOVX instruction, as if the state of the
CPU was held for the desired period. There is no effect on any other instruction or its timing. By
default, the Stretch value is set at 1, giving a MOVX instruction of 3 machine cycles. If desired by the
user the stretch value can be set to 0 to give the fastest MOVX instruction of only 2 machine cycles.
Table 4. Data Memory Cycle Stretch Values
M2
M1
M0
MACHINE
CYCLES
RD
OR
WR
STROBE
WIDTH
IN CLOCKS
2
4
8
RD
OR
WR
STROBE
WIDTH
@ 25 MHZ
80 nS
160 nS
320 nS
RD
OR
WR
STROBE
WIDTH
@ 40 MHZ
50 nS
100 nS
200 nS
0
0
0
0
0
1
0
1
0
2
3 (default)
4
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| W79E532A40FN | 8-BIT MICROCONTROLLER |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W79E532A | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W79E532A40DL | 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:W79 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 |
| W79E532A40DN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
| W79E532A40FL | 功能描述:IC MCU 8-BIT 128KB FLASH 44-QFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W79 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN，SCI，SPI 外圍設(shè)備:POR，PWM，溫度傳感器，WDT 輸入/輸出數(shù):21 程序存儲器容量:40KB（20K x 16） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323 |
| W79E532A40FN | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MICROCONTROLLER |
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