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参数资料
| 型号： | AT49BV6416T-70TI |
| 厂商： | ATMEL CORP |
| 元件分类： | DRAM |
| 英文描述： | 64-megabit (4M x 16) Page Mode 2.7-volt Flash Memory |
| 中文描述： | 4M X 16 FLASH 2.7V PROM, 70 ns, PDSO48 |
| 封装： | 12 X 20 MM, PLASTIC, MO-142DD, TSOP1-48 |
| 文件页数： | 6/30页 |
| 文件大小： | 293K |
| 代理商： | AT49BV6416T-70TI |
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6
3451C–FLASH–2/05
AT49BV6416(T)
3.8
Program/Erase Status
The device provides several bits to determine the status of a program or erase operation: I/O2,
I/O3, I/O5, I/O6, and I/O7. All other status bits are don’t care. The
“Status Bit Table” on page 11
and the following four sections describe the function of these bits. To provide greater flexibility
for system designers, the AT49BV6416(T) contains a programmable configuration register. The
configuration register allows the user to specify the status bit operation. The configuration regis-
ter can be set to one of two different values, “00” or “01”. If the configuration register is set to
“00”, the part will automatically return to the read mode after a successful program or erase
operation. If the configuration register is set to a “01”, a Product ID Exit command must be given
after a successful program or erase operation before the part will return to the read mode. It is
important to note that whether the configuration register is set to a “00” or to a “01”, any unsuc-
cessful program or erase operation requires using the Product ID Exit command to return the
device to read mode. The default value (after power-up) for the configuration register is “00”.
Using the four-bus cycle set configuration register command as shown in the
“Command Defini-
tion Table” on page 12
, the value of the configuration register can be changed. Voltages applied
to the reset pin will not alter the value of the configuration register. The value of the configuration
register will affect the operation of the I/O7 status bit as described below.
3.8.1
Data Polling
The AT49BV6416(T) features Data Polling to indicate the end of a program cycle. If the status
configuration register is set to a “00”, during a program cycle an attempted read of the last word
loaded will result in the complement of the loaded data on I/O7. Once the program cycle has
been completed, true data is valid on all outputs and the next cycle may begin. During a chip or
sector erase operation, an attempt to read the device will give a “0” on I/O7. Once the program
or erase cycle has completed, true data will be read from the device. Data Polling may begin at
any time during the program cycle. Please see
“Status Bit Table” on page 11
for more details.
If the status bit configuration register is set to a “01”, the I/O7 status bit will be low while the
device is actively programming or erasing data. I/O7 will go high when the device has completed
a program or erase operation. Once I/O7 has gone high, status information on the other pins can
be checked.
The Data Polling status bit must be used in conjunction with the erase/program and V
PP
status
bit as shown in the algorithm in
Figures 3-2 and
3-3
on
page 9
.
3.8.2
Toggle Bit
In addition to Data Polling, the AT49BV6416(T) provides another method for determining the
end of a program or erase cycle. During a program or erase operation, successive attempts to
read data from the memory will result in I/O6 toggling between one and zero. Once the program
cycle has completed, I/O6 will stop toggling and valid data will be read. Examining the toggle bit
may begin at any time during a program cycle. Please see
“Status Bit Table” on page 11
for
more details.
Table 3-2.
Sector Protection Status
I/O1
I/O0
Sector Protection Status
0
0
Sector Not Locked
0
1
Softlock Enabled
1
0
Hardlock Enabled
1
1
Both Hardlock and Softlock Enabled
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AT49BV6416T-70TI SL383 | 功能描述:IC FLASH 64MBIT 70NS 48TSOP 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 |
| AT49BV6416T-70TI-T | 功能描述:IC FLASH 64MBIT 70NS 48TSOP 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:64Mb （4M x 16） 写周期时间 - 字，页:15μs 访问时间:70ns 存储器接口:并联 电压 - 电源:2.7 V ~ 3.6 V 工作温度:-40°C ~ 85°C（TC） 安装类型:表面贴装 封装/外壳:48-TFSOP（0.724"，18.40mm 宽） 供应商器件封装:48-TSOP 基本零件编号:AT49BV6416 标准包装:1,000 |
| AT49BV6416T-70TU | 功能描述:IC FLASH 64MBIT 70NS 48TSOP 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 |
| AT49BV642D | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:64-megabit (4M x 16) 3-volt Only Flash Memory |
| AT49BV642D-70TU | 功能描述:闪存 64M FLASH-64M 2.7V BTM BOOT RoHS:否 制造商:ON Semiconductor 数据总线宽度:1 bit 存储类型:Flash 存储容量:2 MB 结构:256 K x 8 定时类型: 接口类型:SPI 访问时间: 电源电压-最大:3.6 V 电源电压-最小:2.3 V 最大工作电流:15 mA 工作温度:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体: 封装:Reel |
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