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参数资料
| 型号： | CAT28F020LI12 |
| 厂商： | ON Semiconductor |
| 文件页数： | 8/16页 |
| 文件大小： | 0K |
| 描述： | IC FLASH 2MBIT 120NS 32DIP |
| 产品变化通告： | Catalyst Group Product Obsolescence 26/Apr/2010 |
| 标准包装： | 11 |
| 格式 - 存储器： | 闪存 |
| 存储器类型： | FLASH |
| 存储容量： | 2M (256K x 8) |
| 速度： | 120ns |
| 接口： | 并联 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 32-DIP（0.600"，15.24mm） |
| 供应商设备封装： | 32-PDIP |
| 包装： | 管件 |
| 产品目录页面： | 808 (CN2011-ZH PDF) |
| 其它名称： | 28F020LI-12 CAT28F020LI-12 CAT28F020LI-12-ND |
CAT28F020
READ OPERATIONS
Read Mode
A Read operation is performed with both CE and OE low
and with WE high. V PP can be either high or low,
however, if V PP is high, the Set READ command has to
be sent before reading data (see Write Operations). The
data retrieved from the I/O pins reflects the contents of
the memory location corresponding to the state of the 18
address pins. The respective timing waveforms for the
read operation are shown in Figure 3. Refer to the AC
Read characteristics for specific timing parameters.
Signature Mode
The signature mode allows the user to identify the IC
manufacturer and the type of device while the device
resides in the target system. This mode can be activated
in either of two ways; through the conventional method
of applying a high voltage (12V) to address pin A 9 or by
sending an instruction to the command register (see
Write Operations).
Figure 3. A.C. Timing for Read Operation
The conventional mode is entered as a regular READ
mode by driving the CE and OE pins low (with WE high),
and applying the required high voltage on address pin A 9
while all other address lines are held at V IL .
A Read cycle from address 0000H retrieves the binary
code for the IC manufacturer on outputs I/O 0 to I/O 7 :
CATALYST Code = 00110001 (31H)
A Read cycle from address 0001H retrieves the binary
code for the device on outputs I/O 0 to I/O 7 .
28F020 Code = 1011 1101 (BDH)
Standby Mode
With CE at a logic-high level, the CAT28F020 is placed
in a standby mode where most of the device circuitry is
disabled, thereby substantially reducing power con-
sumption. The outputs are placed in a high-impedance
state.
POWER UP
STANDBY
DEVICE AND
OUPUTS
DATA VALID
STANDBY
POWER DOWN
ADDRESS SELECTION
ENABLED
ADDRESSES
ADDRESS STABLE
tAVAV (tRC)
CE (E)
tEHQZ (tDF)
OE (G)
WE (W)
DATA (I/O)
HIGH-Z
tWHGL
tGLQX (tOLZ)
tELQX (tLZ)
tGLQV (tOE)
tELQV (tCE)
OUTPUT VALID
tGHQZ (tDF)
tAXQX (tOH)
HIGH-Z
tAVQV (tACC)
28F020 F05
Doc. No. MD-1029, Rev. F
8
? 2009 SCILLC. All rights reserved.
Characteristics subject to change without notice
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相关代理商/技术参数 |
参数描述 |
|---|---|
| CAT28F020LI-12 | 制造商:ON Semiconductor 功能描述:Flash Parallel 5V 2Mbit 256K x 8bit 120ns 32-Pin PDIP Rail 制造商:ON Semiconductor 功能描述:IC FLASH 2MBIT 120NS DIP-32 |
| CAT28F020LI90 | 功能描述:闪存 (256x8) 2M 90ns 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 |
| CAT28F020N12 | 制造商:CLYST 功能描述: 制造商:Catalyst Semiconductor 功能描述: |
| CAT28F020N-12 | 功能描述:闪存 (256x8) 2M 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 |
| CAT28F020N-12RFB | 制造商:CSI 功能描述: |
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