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參數(shù)資料
| 型號： | W78E52 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT MTP Monitor Microcontroller(多次可編程的8位的監(jiān)視微控制器) |
| 中文描述： | 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | DIP-40 |
| 文件頁數(shù)： | 3/20頁 |
| 文件大?。?/td> | 284K |
| 代理商： | W78E52 |
W78E52
Publication Release Date: October 1997
- 3 -
Revision A3
PIN DESCRIPTION
The W78E52 has two operating modes, normal and flash. In normal mode, the W78E52 corresponds
to the W78C52. In flash mode, the user (the maker of the flash EEPROM writer) can access the lash
EEPROM.
P0.7
P0.0 Port 0, Bits 7
0
MODE
DESCRIPTION
Normal
Functions are the same as those in the W78C52.
Flash
This port provides the data bus during access to the flash EEPROM.
P1.7
P1.0 Port 1, Bits 7
0
MODE
DESCRIPTION
Normal
Functions are the same as those in the W78C52.
Flash
This port provides the low-order address bus during access to the flash EEPROM.
P2.7
P2.0 Port 2, Bits 7
0
MODE
DESCRIPTION
Normal
Functions are the same as those in the W78C52.
Flash
This port provides the high-order address bus during access to the flash EEPROM.
P3.7
P3.0 Port 3, Bits 7
0
MODE
DESCRIPTION
Normal
Functions are the same as those in the W78C52.
Flash
P3.3
P3.0 and P3.7
P3.6 are the flash mode configuration pins, Input.
P3.3
P3.0 and P3.7
P3.6 are configured to select or execute the flash operations. For
details, see
Flash Operations
.
EA/V
PP
MODE
DESCRIPTION
Normal
EA
,
External Access, Input, active low.
This pin forces the processor to execute a program from the external ROM. When the
internal flash EEPROM is accessed as in the W78C52, this pin should be kept high.
Flash
V
PP
, Program Power supply pin, Input.
This pin accepts the high voltage (12V) needed for programming the flash EEPROM.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W78E56B | 8-BIT Microcontroller(8位的微控制器) |
| W78E516BP-24 | 8-BIT MICROCONTROLLER |
| W78E516BP-40 | 8-BIT MICROCONTROLLER |
| W78E516 | 8-BIT MICROCONTROLLER |
| W78E516B | 8-BIT MICROCONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W78E52-16 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| W78E52-24 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| W78E52-33 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| W78E52-40 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| W78E52B | 制造商:WINBOND 制造商全稱:Winbond 功能描述:8-BIT MTP MICROCONTROLLER |
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