Features
•
Single 2.7V - 3.6V Supply
•
Serial Interface Architecture
•
Page Program Operation
•
•
•
•
•
•
•
•
•
•
•
– Single Cycle Reprogram (Erase and Program)
– 512 Pages (264 Bytes/Page) Main Memory
Optional Page and Block Erase Operations
One 264-Byte SRAM Data Buffer
Internal Program and Control Timer
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
13 MHz Max Clock Frequency
Hardware Data Protection Feature
Serial Peripheral Interface (SPI) Compatible – Modes 0 and 3
CMOS and TTL Compatible Inputs and Outputs
Commercial and Industrial Temperature Ranges
1-Megabit
2.7-volt Only
Serial
DataFlash
®
AT45DB011
Preliminary
Description
The AT45DB011 is a 2.7-volt only, serial interface Flash memory suitable for in-sys-
tem reprogramming. Its 1,081,344 bits of memory are organized as 512 pages of 264
bytes each. In addition to the main memory, the AT45DB011 also contains one SRAM
data buffer of 264 bytes. Unlike conventional Flash memories that are accessed ran-
domly with multiple address lines and a parallel interface, the DataFlash uses a serial
interface to sequentially access its data. The simple serial interface facilitates hard-
(continued)
Pin Configurations
Pin Name
CS
SCK
SI
SO
WP
RESET
RDY/BUSY
Function
Chip Select
Serial Clock
Serial Input
Serial Output
Hardware Page
Write Protect Pin
Chip Reset
Ready/Busy
PLCC
CS
NC
NC
GND
VCC
NC
NC
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
NC
NC
DC
DC
NC
NC
NC
14
15
16
17
18
19
20
SCK
SI
SO
NC
NC
NC
NC
NC
NC
5
6
7
8
9
10
11
12
13
4
3
2
1
32
31
30
AT45DB011
Preliminary 16-
Megabit 2.7-volt
Only Serial
DataFlash
29
28
27
26
25
24
23
22
21
WP
RESET
RDY/BUSY
NC
NC
NC
NC
NC
NC
Rev. 1103C–08/98
Note: PLCC package pins 16
and 17 are DON’T CONNECT
1
ATMEL [ ATMEL CORPORATION ]
