- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄363896 > W78C31B (WINBOND ELECTRONICS CORP) 8-BIT Microcontroller(8位的微控制器) PDF資料下載
參數(shù)資料
| 型號： | W78C31B |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT Microcontroller(8位的微控制器) |
| 中文描述： | 8-BIT, 40 MHz, MICROCONTROLLER, PDIP40 |
| 封裝： | DIP-40 |
| 文件頁數(shù)： | 3/14頁 |
| 文件大?。?/td> | 233K |
| 代理商： | W78C31B |
W78C31B
Publication Release Date: October 1997
- 3 -
Revision A3
PIN DESCRIPTION
P0.0
P0.7
Port 0, Bits 0 through 7. Port 0 is a bidirectional I/O port. This port also provides a multiplexed low
order address/data bus during accesses to external memory.
P1.0
P1.7
Port 1, Bits 0 through 7. Port 1 is a bidirectional I/O port with internal pull-ups.
P2.0
P2.7
Port 2, Bits 0 through 7. Port 2 is a bidirectional I/O port with internal pull-ups. This port also provides
the upper address bits for accesses to external memory.
P3.0
P3.7
Port 3, Bits 0 through 7. Port 3 is a bidirectional I/O port with internal pull-ups. All bits have alternate
functions, which are described below:
PIN
P3.0
P3.1
P3.2
ALTERNATE FUNCTION
RXD Serial Receive Data
TXD Serial Transmit Data
INT0 External Interrupt 0
P3.3
INT1 External Interrupt 1
T0 Timer 0 Input
T1 Timer 1 Input
P3.4
P3.5
P3.6
WR Data Write Strobe
P3.7
RD Data Read Strobe
EA
External Address Input, active low. This pin forces the processor to execute out of external ROM.
This pin should be kept low for all W78C31B operations.
RST
Reset Input, active high. This pin resets the processor. It must be kept high for at least two machine
cycles in order to be recognized by the processor.
ALE
Address Latch Enable Output, active high. ALE is used to enable the address latch that separates the
address from the data on Port 0. ALE runs at 1/6th of the oscillator frequency. A single ALE pulse is
skipped during external data memory accesses. ALE goes to a high state during reset with a weak
pull-up.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W78C32B | 8-BIT Microcontroller(8位的微控制器) |
| W78C32CP-24 | 8-BIT MICROCONTROLLER |
| W78C32C | 8-BIT MICROCONTROLLER |
| W78C32C-24 | 8-BIT MICROCONTROLLER |
| W78C32C-40 | 8-BIT MICROCONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W78C31B-16 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| W78C31B-24 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| W78C31B-33 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| W78C31B-40 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| W78C31BF-16 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。