IS24C128-2 ISSI [Integrated Silicon Solution, Inc], IS24C128-2 Datasheet

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IS24C128-2

Manufacturer Part Number
IS24C128-2
Description
131,072-bit 2-WIRE SERIAL CMOS EEPROM
Manufacturer
ISSI [Integrated Silicon Solution, Inc]
Datasheet
FEATURES
• Organization:
• 64-Byte Page Write Buffer
• Two-Wire Serial Interface
• Low Power CMOS Technology
• Low Voltage Operation
• 400 KHz (I
• Hardware Data Protection
• Sequential Read Feature
• Filtered Inputs for Noise Suppression
• Self time Write cycle with auto clear
• High Reliability
• Commercial and Industrial temperature ranges
• 8-pin PDIP, 8-pin SOIC, and 14-pin TSSOP
Integrated Silicon Solution, Inc. — www.issi.com —
PRELIMINARY INFORMATION Rev. 00B
03/11/03
Copyright © 2002 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without notice.
assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain the latest version of this device
specification before relying on any published information and before placing orders for products.
IS24C128
131,072-bit 2-WIRE SERIAL
CMOS EEPROM
– 16K-bit x 8-bit
– Bi-directional data transfer protocol
– Active Current less than 2 mA (5V)
– Standby Current less than 5 µA (5V)
– Standby Current less than 2 µA (2.5V)
– IS24C128-2: Vcc = 1.8V to 5.5V
– IS24C128-3: Vcc = 2.5V to 5.5V
– Write Protect pin
– 5 ms @ 2.5V
– Endurance: 100,000 Cycles
– Data Retention: 40 Years
2
C Protocol) Compatibility
1-800-379-4774
The IS24C128 is an electrically erasable PROM
device that uses the standard 2-wire interface for
communications. The IS24C128 contains a memory
array of 128K-bits (16,384 x 8), and is further
subdivided into 256 pages of 64 bytes each for page-
write mode. This EEPROM is offered in wide operating
voltages of
(IS24C128-3) to be compatible with most application
voltages. ISSI designed the IS24C128 to be a low-cost
and low-power 2-wire EEPROM solution. The devices
are packaged in 8-pin PDIP, 8-pin SOIC, and 14-pin
TSSOP.
The IS24C128 maintains compatibility with the popular
2-wire bus protocol, so it is easy to design into
applications implementing this bus type. The simple
bus consists of the Serial Clock wire (SCL) and the
Serial Data wire (SDA). Using the bus, a Master
device such as a microcontroller is usually connected
to one or more Slave devices such as the IS24C128.
The bit stream over the SDA line includes a series of
bytes, which identifies a particular Slave device, an
instruction, an address within that Slave device, and a
series of data, if appropriate. The IS24C128 has a
Write Protect pin (WP) to allow blocking of any write
instruction transmitted over the bus.
DESCRIPTION
1.8V to 5.5V
PRELIMINARY INFORMATION
(IS24C128-2) and 2.5V to 5.5V
ISSI
MARCH 2003
ISSI
®
1

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IS24C128-2 Summary of contents

Page 1

... Low Power CMOS Technology – Active Current less than 2 mA (5V) – Standby Current less than 5 µA (5V) – Standby Current less than 2 µA (2.5V) • Low Voltage Operation – IS24C128-2: Vcc = 1.8V to 5.5V – IS24C128-3: Vcc = 2.5V to 5.5V • 400 KHz ( Protocol) Compatibility • Hardware Data Protection – ...

Page 2

... IS24C128 FUNCTIONAL BLOCK DIAGRAM Vcc SDA SCL WP SLAVE ADDRESS REGISTER & COMPARATOR GND nMOS 2 CONTROL LOGIC WORD ADDRESS COUNTER ACK Integrated Silicon Solution, Inc. — www.issi.com — ISSI HIGH VOLTAGE GENERATOR, TIMING & CONTROL EEPROM ARRAY Y DECODER Clock > DATA DI/O REGISTER 1-800-379-4774 PRELIMINARY INFORMATION Rev ...

Page 3

... IS24C128 PIN CONFIGURATION 8-Pin DIP and SOIC GND 4 5 PIN DESCRIPTIONS A0-A1 Address Inputs SDA Serial Address/Data I/O SCL Serial Clock Input WP Write Protect Input Vcc Power Supply NC No Connect GND Ground SCL This input clock pin is used to synchronize the data transfer to and from the device ...

Page 4

... After a successful data transfer, each receiving device is required to generate an ACK. The Acknowledging device pulls down the SDA line. Reset The IS24C128 contains a reset function in case the 2- wire bus transmission is accidentally interrupted (eg. a power loss), or needs to be terminated mid-stream. The reset is caused when the Master device creates a Start condition ...

Page 5

... IS24C128 initiates the internal Write cycle. ACK polling can be initiated immediately. This involves issuing the Start condition followed by the Slave address for a Write operation. If the IS24C128 is still busy with the Write operation, no ACK will be returned. If the IS24C128 has completed the Write operation, an ACK will be returned and the host can then proceed with the next Read or Write operation ...

Page 6

... Figure 2. Output Acknowledge SCL from Master Data Output from Transmitter Data Output from Receiver Figure 3. Start and Stop Conditions SCL SDA 6 Vcc Master IS24C128 Transmitter/ Receiver Integrated Silicon Solution, Inc. — www.issi.com — ISSI ® ACK 1-800-379-4774 PRELIMINARY INFORMATION Rev. 00B ...

Page 7

... IS24C128 Figure 4. Data Validity Protocol SCL SDA Figure 5. Slave Address BIT Figure 6. Byte Write Device R Address T SDA Bus Activity Figure 7. Page Write Device R T Word Address (n) Address T E SDA A Bus Activity R/W Integrated Silicon Solution, Inc. — www.issi.com — ...

Page 8

... IS24C128 Figure 8. Current Address Read Activity Figure 9. Random Address Read Device R T Address T E SDA A Bus C K Activity R/W DUMMY WRITE Figure 10. Sequential Read R E Device A Address D SDA A Bus C Activity K R Device A T Address ...

Page 9

... This is a stress rating only. Functional operation of the device outside these conditions or those indicated in the operational sections of this specification is not implied. Exposure to these conditions for extended periods may affect reliability. OPERATING RANGE (IS24C128-2) Range Ambient Temperature Commercial 0° ...

Page 10

... IS24C128 DC ELECTRICAL CHARACTERISTICS Commercial ( + Symbol Parameter V Output Low Voltage Output Low Voltage Input High Voltage IH V Input Low Voltage IL I Input Leakage Current LI I Output Leakage Current LO Notes: V min and V max are reference only and are not tested. ...

Page 11

... IS24C128 AC WAVEFORMS Figure 11. Bus Timing t R SCL t SU:STA SDA IN SDA OUT WP Figure 12. Write Cycle Timing SCL 8th BIT SDA WORD n Integrated Silicon Solution, Inc. — www.issi.com — PRELIMINARY INFORMATION Rev. 00A 03/11/ HIGH LOW t HD:DAT t t HD:STA SU:DAT ...

Page 12

... Plastic DIP (8-pin) IS24C128-3G Small Outline (JEDEC STD) (8-pin) IS24C128-3Z TSSOP (14-pin) Part Number Package IS24C128-3PI 300-mil Plastic DIP (8-pin) IS24C128-3GI Small Outline (JEDEC STD) (8-pin) IS24C128-3ZI TSSOP (14-pin) Integrated Silicon Solution, Inc. — www.issi.com — ISSI ® ISSI ® ...

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