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参数资料
| 型号： | AT45D021-TI |
| 厂商： | ATMEL CORP |
| 元件分类： | DRAM |
| 英文描述： | 2-Megabit 5-volt Only Serial DataFlash |
| 中文描述： | 2M X 1 FLASH 5V PROM, PDSO28 |
| 封装： | PLASTIC, TSOP-28 |
| 文件页数： | 5/18页 |
| 文件大小： | 200K |
| 代理商： | AT45D021-TI |
AT45D021
5
RESET:
A low state on the reset pin (RESET) will terminate
the operation in progress and reset the internal state
machine to an idle state. The device will remain in the reset
condition as long as a low level is present on the RESET
pin. Normal operation can resume once the RESET pin is
brought back to a high level.
The device also incorporates an internal power-on reset
circuit; therefore, there are no restrictions on the RESET
pin during power-on sequences.
READY/BUSY:
This open drain output pin will be driven
low when the device is busy in an internally self-timed oper-
ation. This pin, which is normally in a high state (through an
external pull-up resistor), will be pulled low during program-
ming operations, compare operations, and during page-to-
buffer transfers.
Absolute Maximum Ratings*
The busy status indicates that the Flash memory array and
one of the buffers cannot be accessed; read and write
operations to the other buffer can still be performed.
Power On/Reset State
When power is first applied to the device, or when recover-
ing from a reset condition, the device will default to SPI
mode 3. In addition, the SO pin will be in a high impedance
state, and a high to low stransition on the CS pin will be
required to start a valid instruction. The SPI mode will be
automatically selected on every falling edge of CS by sam-
pling the inactive clock state.
Note:
1. After power is applied and V
CC
is at the minimum specified data sheet value, the system should wait 20 ms before an oper-
ational mode is started.
Temperature Under Bias................................ -55
°
C to +125
°
C
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect device
reliability.
Storage Temperature..................................... -65
°
C to +150
°
C
All Input Voltages
(including NC Pins)
with Respect to Ground...................................-0.6V to +6.25V
All Output Voltages
with Respect to Ground.............................-0.6V to V
CC
+ 0.6V
DC and AC Operating Range
AT45D021
Operating Temperature (Case)
Com.
0
°
C to 70
°
C
Ind.
-40
°
C to 85
°
C
V
CC
Power Supply
(1)
4.5V to 5.5V
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| AT45D041 | 4-Megabit 5-volt Only Serial DataFlash |
| AT45D041-JC | 4-Megabit 5-volt Only Serial DataFlash |
| AT45D041-JI | 4-Megabit 5-volt Only Serial DataFlash |
| AT45D041-RC | 4-Megabit 5-volt Only Serial DataFlash |
| AT45D041-RI | 4-Megabit 5-volt Only Serial DataFlash |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AT45D02-RC | 制造商:未知厂家 制造商全称:未知厂家 功能描述:(183.07 k) |
| AT45D041 | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-Megabit 5-volt Only Serial DataFlash |
| AT45D041A | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-megabit 5-volt Only Serial DataFlash |
| AT45D041A-JC | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:4-megabit 5-volt Only Serial DataFlash |
| AT45D041A-JI | 制造商:未知厂家 制造商全称:未知厂家 功能描述:SPI Serial EEPROM |
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