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PDF 45DB041 Data sheet ( Hoja de datos )
| Número de pieza | 45DB041 | |
| Descripción | AT45DB041 | |
| Fabricantes | ATMEL Corporation | |
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AT45DB041
Features
• Single 2.7V - 3.6V Supply
• Serial Interface Architecture
• Page Program Operation
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
• 120 ms Typical Page to Buffer Transfer Time
• Low Power Dissipation
4 mA Active Read Current Typical
8 mA CMOS Standby Current Typical
• 5 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 AT45DB041 is a 2.7-volt only, serial interface Flash memory suitable for in-sys-
tem reprogramming. Its 4,325,376 bits of memory are organized as 2048 pages of
264-bytes each. In addition to the main memory, the AT45DB041 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
Pin Configurations
(continued)
PLCC
Pin Name
Function
CS
SCK
SI
SO
WP
Chip Select
Serial Clock
Serial Input
Serial Output
Hardware Page Write
Protect Pin
SCK
SI
SO
NC
NC
NC
NC
NC
NC
5
6
7
8
9
10
11
12
13
29 WP
28 RESET
27 RDY/BUSY
26 NC
25 NC
24 NC
23 NC
22 NC
21 NC
RESET
RDY/BUSY
Chip Reset
Ready/Busy
Note: PLCC package pin 16
is DON’T CONNECT.
www.DataSheet4U.com
4-Megabit
2.7-Volt Only
Serial
DataFlash™
AT45DB041
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
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
SOIC
VSS
NC
NC
CS
SCK
SI
SO
NC
NC
NC
NC
NC
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
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
0669A-A
1
1 page  
AT45DB041
HARDWARE PAGE WRITE PROTECT: If the WP pin is
held low, the first 256 pages of the main memory cannot be
reprogrammed. The only way to reprogram the first 256
pages is to first drive the protect pin high and then use the
program commands previously mentioned.
RESET: A low state on the reset pin (RESET) will terminate
the operation in progress and reset the internal state
machine to an idle state. The device will remain in the reset
condition as long as a low level is present on the RESET
pin. Normal operation can resume once the RESET pin is
brought back to a high level.
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The device also incorporates an internal power-on reset cir-
cuit; therefore, there are no restrictions on the RESET pin
during power-on sequences.
READY/BUSY: This open drain output pin will be driven
low when the device is busy in an internally self-timed oper-
ation. This pin, which is normally in a high state (through an
external pull-up resistor), will be pulled low during program-
ming operations, compare operations, and during page-to-
buffer transfers.
The busy status indicates that the Flash memory array and
one of the buffers cannot be accessed; read and write
operations to the other buffer can still be performed.
Absolute Maximum Ratings*
Temperature Under Bias ......................-55°C to +125°C
Storage Temperature............................-65°C to +150°C
All Input Voltages
(including NC Pins)
with Respect to Ground......................... -0.6V to +6.25V
All Output Voltages
with Respect to Ground................... -0.6V to VCC + 0.6V
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
device reliability.
DC and AC Operating Range
AT45DB041
Operating Temperature (Case)
Com.
Ind.
0°C to 70°C
-40°C to 85°C
VCC Power Supply(1)
2.7V to 3.6V
Notes: 1. After power is applied and VCC is at the minimum specified data sheet value, the system should wait 20 ms before an oper-
ational mode is started.
5
5 Page 
Buffer 1 to
Main
Memory
Page
Program
with Built-
In Erase
Buffer 2 to
Main
Memory
Page
Program
with Built-
In Erase
Buffer 1 to
Main
Memory
Page
Program
without
Built-In
Erase
Buffer 2 to
Main
Memory
Page
Program
without
Built-In
Erase
83H
1
0
0
0
0
0
1
1
X
X
X
X
PA10
PA9
PA8
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
X
X
X
X
X
X
X
X
X
86H
1
0
0
0
0
1
1
0
X
X
X
X
PA10
PA9
PA8
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
X
X
X
X
X
X
X
X
X
88H
1
0
0
0
1
0
0
0
X
X
X
X
PA10
PA9
PA8
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
X
X
X
X
X
X
X
X
X
89H
1
0
0
0
1
0
0
1
X
X
X
X
PA10
PA9
PA8
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
X
X
X
X
X
X
X
X
X
Table 2
Main
Memory
Page
Program
Through
Buffer 1
Opcode
82H
1
0
0
0
0
0
1
0
X
X
X
X
PA10
PA9
PA8
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
BA8
BA7
BA6
BA5
BA4
BA3
BA2
BA1
BA0
Main
Memory
Page
Program
Through
Buffer 2
85H
1
0
0
0
0
1
0
1
X
X
X
X
PA10
PA9
PA8
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
BA8
BA7
BA6
BA5
BA4
BA3
BA2
BA1
BA0
AT45DB041
www.DataSheet
Auto Page
Rewrite
Through
Buffer 1
Auto Page
Rewrite
Through
Buffer 2
Status
Register
58H
0
1
0
1
1
0
0
0
X
X
X
X
PA10
PA9
PA8
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
X
X
X
X
X
X
X
X
X
59H
0
1
0
1
1
0
0
1
X
X
X
X
PA10
PA9
PA8
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
X
X
X
X
X
X
X
X
X
57H
0
1
0
1
0
1
1
1
X (Don’t Care)
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet 45DB041.PDF ] | |
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