鈥?/div>
- Single Cycle Reprogram (Erase and Program)
- 2048 Pages (264 Bytes/Page) Main Memory
Two 264-Byte Data Buffers - Allows Receiving of Data while Reprogramming of
Non-Volatile Memory
Internal Program and Control Timer
Fast Page Program Time - 7 ms Typical
80
碌s
Typical Page to Buffer Transfer Time
Low Power Dissipation
- 15 mA Active Read Current Typical
- 20
碌A(chǔ)
CMOS Standby Current Typical
10 MHz Max Clock Frequency
Hardware Data Protection Feature
Serial Peripheral Interface (SPI) Compatible 鈥?Modes 0 and 3
CMOS and TTL Compatible Inputs and Outputs
Commercial and Industrial Temperature Ranges
4-Megabit
5-volt Only
Serial
DataFlash
鈩?/div>
AT45D041
Description
The AT45D041 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 AT45D041 also contains two 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 memories that are
accessed randomly with multiple address lines and a parallel interface, the DataFlash
uses a serial interface to sequentially access its data. The simple serial interface facil-
itates hardware layout, increases system reliability, minimizes switching noise, and
(continued)
Pin Configurations
Pin Name
CS
SCK
SI
SO
WP
RESET
RDY/BUSY
Function
Chip Select
Serial Clock
Serial Input
PLCC
CS
NC
NC
GND
VCC
NC
NC
Serial Output
Hardware Page Write
Protect Pin
Chip Reset
Ready/Busy
Note: PLCC package pins 16
and 17 are DON鈥橳 CONNECT.
TSOP Top View
Type 1
RDY/BUSY
RESET
WP
NC
NC
VCC
GND
NC
NC
NC
CS
SCK
SI
SO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
GND
NC
NC
CS
SCK
SI
SO
NC
NC
NC
NC
NC
NC
NC
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
29
28
27
26
25
24
23
22
21
WP
RESET
RDY/BUSY
NC
NC
NC
NC
NC
NC
SOIC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
VCC
NC
NC
WP
RESET
RDY/BUSY
NC
NC
NC
NC
NC
NC
NC
NC
0803C-D鈥?/97
1
next