参数资料
型号: AT45DB011B-XU
厂商: Atmel
文件页数: 1/32页
文件大小: 0K
描述: IC FLASH 1MBIT 20MHZ 14TSSOP
标准包装: 96
格式 - 存储器: 闪存
存储器类型: DataFLASH
存储容量: 1M(512 页 x 264 字节)
速度: 20MHz
接口: SPI 3 线串行
电源电压: 2.7 V ~ 3.6 V
工作温度: -40°C ~ 85°C
封装/外壳: 14-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 14-TSSOP
包装: 管件
Features
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Single 2.7V - 3.6V Supply
Serial Peripheral Interface (SPI) Compatible
20 MHz Max Clock Frequency
Page Program Operation
– Single Cycle Reprogram (Erase and Program)
– 512 Pages (264 Bytes/Page) Main Memory
Supports Page and Block Erase Operations
One 264-byte SRAM Data Buffer
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Continuous Read Capability through Entire Array
– Ideal for Code Shadowing Applications
Fast Page Program Time – 7 ms Typical
120 μs Typical Page to Buffer Transfer Time
Low Power Dissipation
– 4 mA Active Read Current Typical
– 2 μA CMOS Standby Current Typical
Hardware Data Protection Feature
100% Compatible with AT45DB011
Commercial and Industrial Temperature Ranges
Green (Pb/Halide-free/RoHS Compliant) Packaging Options
1-megabit
2.7-volt Only
DataFlash ?
AT45DB011B
Description
The AT45DB011B is a 2.7-volt only, serial interface Flash memory ideally suited for
a wide variety of digital voice-, image-, program code- and data-storage applications.
Its 1,081,344 bits of memory are organized as 512 pages of 264 bytes each. In addi-
tion to the main memory, the AT45DB011B also contains one SRAM data buffer of 264
bytes. The buffer allows receiving of data while a page in the main memory is being
reprogrammed. EEPROM emulation (bit or byte alterability) is easily handled with a
self-contained three step Read-Modify-Write operation. Unlike conventional Flash
memories that are accessed randomly with multiple address lines and a parallel inter-
face, the DataFlash uses a SPI serial interface to sequentially access its data. SPI
mode 0 and mode 3 are supported. The simple serial interface facilitates hardware
Pin Configurations
CBGA Top View
through Package
Pin Name
CS
Function
Chip Select
1
2
3
AT45DB011B
SCK
Serial Clock
A
SCK
GND
VCC
Preliminary 16-
B
SI
Serial Input
C
CS RDY/BSY WP
Megabit 2.7-volt
SO
WP
Serial Output
Hardware Page
SO
SI
RESET
Only Serial
RESET
RDY/BUSY
Write Protect Pin
Chip Reset
Ready/Busy
TSSOP Top View
Type 1
DataFlash
RDY/BUSY
1
14
CS
SOIC
RESET
WP
2
3
13
12
NC
NC
SI
SCK
RESET
CS
1
2
3
4
8
7
6
5
SO
GND
VCC
WP
VCC
GND
SCK
SO
4
5
6
7
11
10
9
8
NC
NC
NC
SI
1984J–DFLASH–06/06
1
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