AT45DB011B_06 Datasheet, PDF (1/32 Pages) ATMEL Corporation – 1-megabit 2.7-volt Only DataFlash

Features
• 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/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
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
SOIC
SI 1
SCK 2
RESET 3
CS 4
8 SO
7 GND
6 VCC
5 WP
CBGA Top View
through Package
123
A
SCK GND VCC
B
CS RDY/BSY WP
C
SO SI RESET
TSSOP Top View
Type 1
RDY/BUSY 1
RESET 2
WP 3
VCC 4
GND 5
SCK 6
SO 7
14 CS
13 NC
12 NC
11 NC
10 NC
9 NC
8 SI
AT45DB011B
Preliminary 16-
Megabit 2.7-volt
Only Serial
DataFlash
1984J–DFLASH–06/06
1