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PDF N25S818HA Data sheet ( Hoja de datos )
| Número de pieza | N25S818HA | |
| Descripción | 256 kb Low Power Serial SRAMs | |
| Fabricantes | ON Semiconductor | |
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N25S818HA
256 kb Low Power Serial
SRAMs
32 k x 8 Bit Organization
Introduction
The ON Semiconductor serial SRAM family includes several
integrated memory devices including this 256 kb serially accessed
Static Random Access Memory, internally organized as 32 k words by
8 bits. The devices are designed and fabricated using
ON Semiconductor’s advanced CMOS technology to provide both
high−speed performance and low power. The devices operate with a
single chip select (CS) input and use a simple Serial Peripheral
Interface (SPI) serial bus. A single data in and data out line is used
along with a clock to access data within the devices. The N25S818HA
devices include a HOLD pin that allows communication to the device
to be paused. While paused, input transitions will be ignored. The
devices can operate over a wide temperature range of −40°C to +85°C
and can be available in several standard package offerings.
Features
• Power Supply Range: 1.7 to 1.95 V
• Very Low Standby Current: Typical Isb as low as 200 nA
• Very Low Operating Current: As low as 3 mA
• Simple Memory Control:
Single chip select (CS)
Serial input (SI) and serial output (SO)
• Flexible Operating Modes:
Word read and write
Page mode (32 word page)
Burst mode (full array)
• Organization: 32 k x 8 bit
• Self Timed Write Cycles
• Built−in Write Protection (CS High)
• HOLD Pin for Pausing Communication
• High Reliability: Unlimited write cycles
• Green SOIC and TSSOP
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
http://onsemi.com
MARKING
DIAGRAMS
TSSOP−8
T SUFFIX
CASE 948AL
C124
XXXXYZZ
SOIC−8
S SUFFIX
CASE 751BD
C114
XXXXYZZ
XXXX
Y
ZZ
= Date Code
= Assembly Code
= Lot Traceability
ORDERING INFORMATION
Device
Package
Shipping†
N25S818HAS21I
N25S818HAT21I
N25S818HAS21IT
N25S818HAT21IT
SOIC−8
(Pb−Free)
TSSOP−8
(Pb−Free)
SOIC−8
(Pb−Free)
TSSOP−8
(Pb−Free)
100 Units / Tube
100 Units / Tube
3000 / Tape &
Reel
3000 / Tape &
Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2012
June, 2012 − Rev. 12
1
Publication Order Number:
N25S818HA/D
1 page  
N25S818HA
CS
SCK
tCSS
tSU
SI
MSB in
tR
tHD
SO
tF tCSH
LSB in
High−Z
Figure 3. Serial Input Timing
tCSD
tCLD
tSCS
CS
SCK
SO
SI
tLO tHI
tCSH
tV
MSB out
Don’t Care
Figure 4. Serial Output Timing
LSB out
tDIS
CS
SCK
SO n+2
SI n+2
tHS
tHH
n+1 n
tHZ
n+1 n
High−Z
Don’t Care
tHH
tHS
tHV n n−1
tSU
n n−1
HOLD
Figure 5. Hold Timing
http://onsemi.com
5
5 Page 
N25S818HA
PACKAGE DIMENSIONS
TSSOP8, 4.4x3
CASE 948AL−01
ISSUE O
b
e
TOP VIEW
D
A2
E1 E
A
SYMBOL
A
A1
A2
b
c
D
E
E1
e
L
L1
θ
MIN
0.05
0.80
0.19
0.09
2.90
6.30
4.30
0.50
0º
NOM
0.90
3.00
6.40
4.40
0.65 BSC
1.00 REF
0.60
MAX
1.20
0.15
1.05
0.30
0.20
3.10
6.50
4.50
0.75
8º
q1 c
SIDE VIEW
A1
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MO-153.
L1
END VIEW
L
http://onsemi.com
11
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| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet N25S818HA.PDF ] | |
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