AT45D041A_14 Datasheet, PDF (1/28 Pages) ATMEL Corporation – Optional Page and Block Erase Operations

Features
• 100% Compatible to AT45D041
• Single 4.5V - 5.5V Supply
• Serial Interface Architecture
• Page Program Operation
– Single Cycle Reprogram (Erase and Program)
– 2048 Pages (264 Bytes/Page) Main Memory
• Optional Page and Block Erase Operations
• Two 264-byte SRAM Data Buffers – Allows Receiving of Data
while Reprogramming of Nonvolatile Memory
• Continuous Read Capability through Entire Array
• Internal Program and Control Timer
• 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 AT45D041A is a 5-volt only, serial interface Flash memory suitable for in-
system reprogramming. Its 4,325,376 bits of memory are organized as 2048 pages of
264 bytes each. In addition to the main memory, the AT45D041A also contains two
SRAM data buffers of 264 bytes each. The buffers allow receiving of data while a
page in the main memory is being reprogrammed. Unlike conventional Flash
Pin Configurations
(continued)
Pin Name
CS
SCK
SI
SO
WP
RESET
Function
Chip Select
Serial Clock
Serial Input
Serial Output
Hardware Page Write
Protect Pin
Chip Reset
RDY/BUSY 1
RESET 2
WP 3
NC 4
NC 5
VCC 6
GND 7
NC 8
NC 9
NC 10
CS 11
SCK 12
SI 13
SO 14
TSOP Top View
Type 1
28 NC
27 NC
26 NC
25 NC
24 NC
23 NC
22 NC
21 NC
20 NC
19 NC
18 NC
17 NC
16 NC
15 NC
RDY/BUSY Ready/Busy
PLCC
SOIC
SCK 5
SI 6
SO 7
NC 8
NC 9
NC 10
NC 11
NC 12
NC 13
29 WP
28 RESET
27 RDY/BUSY
26 NC
25 NC
24 NC
23 NC
22 NC
21 NC
GND
1
NC
2
NC
3
CS
4
SCK
5
SI
6
SO
7
NC
8
NC
9
NC
10
NC
11
NC
12
NC
13
NC
14
28
VCC
27
NC
26
NC
25
WP
24
RESET
23
RDY/BUSY
22
NC
21
NC
20
NC
19
NC
18
NC
17
NC
16
NC
15
NC
Note: PLCC package pins 16
and 17 are DON’T CONNECT.
4-megabit
5-volt Only
Serial
DataFlash^®
AT45D041A
Recommend using
AT45DB041B for new
designs.
Rev. 1496D–01/01
1