1
1-Megabit
5.0-volt Only
Serial
DataFlash
®
AT45D011
Preliminary
Features
• Single 4.5V - 5.5V 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
– 15 mA Active Read Current Typical
–10 µA CMOS Standby Current Typical
• 15 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
Description
The AT45D011 is a 5.0-volt only, serial interface Flash memory suitable for in-system
reprogramming. Its 1,081,344 bits of memory are organized as 512 pages of 264
bytes each. In addition to the main memory, the AT45D011 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-
Rev. 1123A–08/98
Pin Configurations
Pin Name Function
CS Chip Select
SCK Serial Clock
SI Serial Input
SO Serial Output
WP
Hardware Page
Write Protect Pin
RESET Chip Reset
RDY/BUSY Ready/Busy
(continued)
TSSOP Top View
Type 1
1
2
3
4
5
6
7
14
13
12
11
10
9
8
RDY/BUSY
RESET
WP
VCC
GND
SCK
SO
CS
NC
NC
NC
NC
NC
SI
PLCC
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
SCK
SI
SO
NC
NC
NC
NC
NC
NC
WP
RESET
RDY/BUSY
NC
NC
NC
NC
NC
NC
4 3 2 1
32 31 30
14 15 16 17 18 19 20
NC NC DC DC NC NC NC
CS NC NC GND VCC NC NC
SOIC
1
2
3
4
8
7
6
5
SI
SCK
RESET
CS
SO
GND
VCC
WP
Note: PLCC package pins 16
and 17 are DON’T CONNECT
AT45DB011
Preliminary 16-
Megabit 2.7-volt
Only Serial
DataFlash