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
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) 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
Pin Name
CS
SCK
SI
SO
WP
RESET
RDY/BUSY
Function
Chip Select
Serial Clock
Serial Input
C
A
CBGA Top View
through Package
1
2
3
SCK
GND
VCC
B
CS RDY/BSY WP
SO
SI
RESET
Serial Output
Hardware Page
Write Protect Pin
Chip Reset
Ready/Busy
SOIC
SI
SCK
RESET
CS
1
2
3
4
8
7
6
5
SO
GND
VCC
WP
TSSOP Top View
Type 1
RDY/BUSY
RESET
WP
VCC
GND
SCK
SO
1
2
3
4
5
6
7
14
13
12
11
10
9
8
CS
NC
NC
NC
NC
NC
SI
AT45DB011B
Preliminary 16-
Megabit 2.7-volt
Only Serial
DataFlash
Rev. 1984H–DFLSH–10/04
1
ATMEL [ ATMEL CORPORATION ]
