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參數(shù)資料
| 型號(hào)： | W78ERD2A40FL |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類(lèi)： | 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, PQFP44 |
| 封裝： | ROHS COMPLIANT, PLASTIC, QFP-44 |
| 文件頁(yè)數(shù)： | 5/76頁(yè) |
| 文件大?。?/td> | 650K |
| 代理商： | W78ERD2A40FL |
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W78ERD2/W78ERD2A
Publication Release Date: February 14, 2007
- 5 -
Revision A10
4. PIN DESCRIPTION
SYMBOL
TYPE*
DESCRIPTIONS
EA
I
EXTERNAL ACCESS ENABLE: This pin forces the processor to execute
instructions in external ROM. The ROM address and data are not presented
on the bus if the
EA
pin is high.
PSEN
O H
PROGRAM STORE ENABLE:
PSEN
indicates external ROM data is on the
Port 0 address/data bus. If internal ROM is accessed, no
PSEN
strobe signal
is present on this pin.
ALE
O H
ADDRESS LATCH ENABLE: 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.
RST
I L
RESET: If this pin is set high for two machine cycles while the oscillator is
running, the W78ERD2 is reset.
XTAL1
I
CRYSTAL 1: Crystal oscillator input or external clock input.
XTAL2
O
CRYSTAL 2: Crystal oscillator output.
V
SS
I
GROUND: ground potential.
V
DD
I
POWER SUPPLY: Supply voltage for operation.
P0.0
P0.7 I/O D
PORT 0: 8-bit, bi-directional I/O port, the same as that of the standard 80C52.
Port 0 has internal pull-up resisters enabled by software.
P1.0
P1.7 I/O H PORT 1: 8-bit, bi-directional I/O port, the same as that of the standard 80C52.
P2.0
P2.7 I/O H provides the upper address bits when accessing external memory.
P3.0
P3.7 I/O H PORT 3: 8-bit, bi-directional I/O port, the same as that of the standard 80C52.
P4.0
P4.3 I/O H PORT 4: 4-bit, bi-directional I/O port with chip-select functions.
* Note:
TYPE
I: input, O: output, I/O: bi-directional, H: pull-high, L: pull-low, D: open drain
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| W78ERD2A40PL | 8-BIT MICROCONTROLLER |
| W78ERD2 | 8-BIT MICROCONTROLLER |
| W78ERD2A40DN | 8-BIT MICROCONTROLLER |
| W78ERD2A40FN | 8-BIT MICROCONTROLLER |
| W78ERD2A40PN | 8-BIT MICROCONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| W78ERD2A40FN | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:8-BIT MICROCONTROLLER |
| W78ERD2A40PL | 功能描述:IC MCU 8-BIT 64K FLASH 44-PLCC RoHS:是 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:W78 標(biāo)準(zhǔn)包裝:300 系列:78K0R/Ix3 核心處理器:78K/0R 芯體尺寸:16-位 速度:40MHz 連通性:3 線(xiàn) SIO，I²C，LIN，UART/USART 外圍設(shè)備:DMA，LVD，POR，PWM，WDT 輸入/輸出數(shù):27 程序存儲(chǔ)器容量:16KB（16K x 8） 程序存儲(chǔ)器類(lèi)型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 8x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:38-SSOP 包裝:托盤(pán) |
| W78ERD2A40PN | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:8-BIT MICROCONTROLLER |
| W78I052A | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:8-BIT MICROCONTROLLER |
| W78I052A24DL | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:8-BIT MICROCONTROLLER |
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