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NX26F011A Datasheet(PDF) 2 Page - List of Unclassifed Manufacturers

Part No. NX26F011A
Description  1M-BIT AND 4M-BIT SERIAL FLASH MEMORY WITH 2-PIN NXS INTERFACE
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NX26F011A Datasheet(HTML) 2 Page - List of Unclassifed Manufacturers

 
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NX26F011A
NX26F041A
2
NexFlash Technologies, Inc.
PRELIMINARY NXSF009A-0599
05/05/99 ©
Pin Descriptions
Package Types
The NX26F011A and NX26F041A is available in a 24/28-pin
TSOP (Type II) package (Figure 1 and Table 1) or a
removable Serial Flash Module (see NX25Mxxx/NX26Mxxx
Serial Flash Module data sheet for further information).
Power Supply Pins (Vcc and GND)
The NX26F011A and NX26F041A support single power sup-
ply Read, Erase, and Write operations available in 5V and 3V
Vcc versions. Active power requirements are as low as 15 mA
for 3V versions with standby current in the 1
µA range.
NXS Serial Interface Pins (SCK and SIO)
The 2-wire NXS (NexFlash Serial) interface includes a
Clock Input pin (SCK) and a single bidirectional I/O pin for
data (SIO). All data to or from the SIO pin is clocked
relative to the rising edge of SCK. The 2-wire NXS serial
interface makes the NX26F011A and NX26F041A an ideal
solution for removable non-volatile storage. A simple edge
connector or cable/connector with four contacts (SCK,
SIO, Vcc, and GND) can support communications with
space efficiency and reliability. The NXS interface can
operate at clock rates up to 16 MHz for 5V versions.
Table 1. Pin Descriptions
A0, A1, A2, A3
Device Address
SCK
Serial Clock
SIO
Serial Data I/O
Vcc
Power Supply
GND
Ground
NC
No Connect
Figure 1. NX26F011A and NX26F041A Pin
Assignments
A0
NC
A2
NC
NC
VCC
GND
NC
NC
NC
A3
SCK
A1
SIO
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
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
Device Address Pins (A0, A1, A2, A3)
There is no active chip select on the NX26F011A and
NX26F041A. Instead, four static device address pins
(A0, A1, A2, and A3) are provided for decoding from one to
16 possible devices (Figure 2). This allows up to 4MB (using
an NX26F011A device) or 32MB (using an NX26F041A
device) to be addressed via a single 2-wire NXS interface.
The static address pins (A0-A3) must be tied high or low to
match the device address field (DA3-DA0) in the sector
Read and Erase/Write instruction sequences.
No Connect Pins (N/C)
The NX26F011A and NX26F041A uses only a few signal
pins. As a result, the TSOP package has numerous
no connects (NC) that have no electrical contact to the die.


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