Features
• Single 2.5V - 3.6V or 2.7V - 3.6V Supply
• Serial Peripheral Interface (SPI) Compatible
• 20 MHz Max Clock Frequency
• Page Program Operation
– Single Cycle Reprogram (Erase and Program)
– 4096 Pages (528 Bytes/Page) Main Memory
• Supports Page and Block Erase Operations
• Two 528-byte SRAM Data Buffers – Allows Receiving of Data
while Reprogramming of Nonvolatile Memory
• Continuous Read Capability through Entire Array
– Ideal for Code Shadowing Applications
• Low Power Dissipation
– 4 mA Active Read Current Typical
– 2 µA CMOS Standby Current Typical
• Hardware Data Protection Feature
• 100% Compatible to AT45DB161
16-megabit
2.5-volt Only or
2.7-volt Only
DataFlash®
• 5.0V-tolerant Inputs: SI, SCK, CS, RESET and WP Pins
• Commercial and Industrial Temperature Ranges
• Green (Pb/Halide-free) Packaging Options
AT45DB161B
Description
The AT45DB161B is a 2.5-volt or 2.7-volt only, serial interface Flash memory ideally
suited for a wide variety of digital voice-, image-, program code- and data-storage
TSOP Top View – Type 1
Pin Configurations
RDY/BUSY
RESET
WP
1
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
2
Pin Name
Function
3
NC
4
CS
Chip Select
Serial Clock
Serial Input
Serial Output
NC
5
VCC
GND
NC
6
SCK
SI
7
8
NC
9
NC
10
11
12
13
14
CS
SO
SCK
SI
SO
WP
Hardware Page Write
Protect Pin
SOIC
CBGA Top View
through Package
RESET
Chip Reset
GND
NC
NC
CS
SCK
SI
1
28
VCC
NC
RDY/BUSY Ready/Busy
1
2
3
4
5
2
27
26
25
24
23
22
21
20
19
18
17
16
15
3
NC
4
WP
5
RESET
RDY/BUSY
NC
A
B
C
D
E
6
NC
NC
NC
NC
SO
NC
NC
NC
NC
NC
NC
NC
7
8
NC
NC SCK GND VCC NC
DataFlash Card(1)
9
NC
NC
NC
NC
CS RDY/BSY WP NC
10
11
12
13
14
NC
Top View through Package
NC
SO
NC
SI RESET NC
NC
NC NC
NC
NC
7
6 5 4 3 2 1
NC
CASON – Top View through Package
SI
SCK
1
2
3
4
8
7
6
5
SO
GND
VCC
WP
RESET
CS
Note:
1. See AT45DCB002 Datasheet.
Rev. 2224I–DFLSH–10/04
1