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参数资料
| 型号： | AT49LW040 |
| 厂商： | Atmel Corp. |
| 英文描述： | 8-megabit and 4-megabit Firmware Hub Flash Memory |
| 中文描述： | 8兆位和4兆位闪存固件集线器 |
| 文件页数： | 3/34页 |
| 文件大小： | 465K |
| 代理商： | AT49LW040 |
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3
AT49LW080/040
1966C–FLASH–03/02
Block Diagram
Pin Description
Table 1 details the usage of each of the device pins. Most of the pins have dual function-
ality, with functions in both the Firmware Hub and A/A Mux interfaces. A/A Mux
functionality for pins is shown in
bold
in the description box for that pin. All pins are
designed to be compliant with voltage of V
CC
+ 0.3V max, unless otherwise noted.
FWH
INTERFACE
A10 - A0
I/O7 - I/O0
FLASH
ARRAY
CONTROL
LOGIC
A/A MUX
INTERFACE
RST
IC
CLK
INIT
FWH (4:0)
ID (3:0)
FGPI (4:0)
TBL
WP
WE
R/C
OE
RY/BY
Table 1.
Pin Description
Symbol
Type
Interface
Name and Function
FWH
A/A Mux
IC
INPUT
X
X
INTERFACE CONFIGURATION PIN:
This pin determines which interface
is operational. This pin is held high to enable the A/A Mux interface. This
pin is held low to enable the FWH interface. This pin must be set at
power-up or before return from reset and not changed during device
operation. This pin is pulled down with an internal resistor, with value
between 20 and 100 k
. With IC high (A/A Mux mode), this pin will exhibit
a leakage current of approximately 200 μA. This pin may be floated,
which will select FWH mode.
RST
INPUT
X
X
INTERFACE RESET:
Valid for both A/A Mux and FWH interface
operations. When driven low, RST inhibits write operations to provide
data protection during power transitions, resets internal automation, and
tri-states pins FWH [3:0] (in FWH interface mode). RST high enables
normal operation. When exiting from reset, the device defaults to read
array mode.
INIT
INPUT
X
PROCESSOR RESET:
This is a second reset pin for in-system use. This
pin is internally combined with the RST pin. If this pin or RST is driven
low, identical operation is exhibited. This signal is designed to be
connected to the chipset INIT signal (Max voltage depends on the
processor. Do not use 3.3V.)
A/A Mux = OE
相关PDF资料 |
PDF描述 |
|---|---|
| AT49LW040-33JC | 8-megabit and 4-megabit Firmware Hub Flash Memory |
| AT49LW040-33TC | 8-megabit and 4-megabit Firmware Hub Flash Memory |
| AT49LW080 | 8-megabit and 4-megabit Firmware Hub Flash Memory |
| AT49LW080-33JC | 8-megabit and 4-megabit Firmware Hub Flash Memory |
| AT49LW080-33TC | 8-megabit and 4-megabit Firmware Hub Flash Memory |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT49LW040-33JC | 制造商:Atmel Corporation 功能描述:NOR Flash, 512K x 8, 32 Pin, Plastic, PLCC |
| AT49LW080-33JC | 功能描述:IC FLASH 8MBIT 33MHZ 32PLCC RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:1 系列:- 格式 - 存储器:RAM 存储器类型:SDRAM 存储容量:256M（8Mx32） 速度:143MHz 接口:并联 电源电压:3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 封装/外壳:90-VFBGA 供应商设备封装:90-VFBGA（8x13） 包装:托盘 其它名称:Q2841869 |
| AT49LW080-33JC SL383 | 功能描述:IC FLASH 8MBIT 33MHZ 32PLCC RoHS:否 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:1 系列:- 格式 - 存储器:RAM 存储器类型:SDRAM 存储容量:256M（8Mx32） 速度:143MHz 接口:并联 电源电压:3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 封装/外壳:90-VFBGA 供应商设备封装:90-VFBGA（8x13） 包装:托盘 其它名称:Q2841869 |
| AT49LW080-33JC-T | 功能描述:IC FLASH 8MBIT 33MHZ 32PLCC 制造商:microchip technology 系列:- 包装:带卷（TR） 零件状态:停產 存储器类型:非易失 存储器格式:闪存 技术:FLASH 存储容量:8Mb （1M x 8） 时钟频率:33MHz 写周期时间 - 字，页:300μs 存储器接口:并联 电压 - 电源:3 V ~ 3.6 V 工作温度:0°C ~ 85°C（TC） 安装类型:表面贴装 封装/外壳:32-LCC（J 形引线） 供应商器件封装:32-PLCC 基本零件编号:AT49LW080 标准包装:750 |
| AT49LW080-33JX | 功能描述:IC FLASH 8MBIT 33MHZ 32PLCC RoHS:是 类别:集成电路 (IC) >> 存储器 系列:- 标准包装:1 系列:- 格式 - 存储器:RAM 存储器类型:SDRAM 存储容量:256M（8Mx32） 速度:143MHz 接口:并联 电源电压:3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 封装/外壳:90-VFBGA 供应商设备封装:90-VFBGA（8x13） 包装:托盘 其它名称:Q2841869 |
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