PDF IS23SC4418 Data sheet ( Hoja de datos )

Número de pieza	IS23SC4418
Descripción	(IS23SC4418 / IS23SC4428) 1-KBYTE EEPROM
Fabricantes	ISSI
Logotipo
Hay una vista previa y un enlace de descarga de IS23SC4418 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas
No Preview Available ! IIIISSSS223322SS33CC44SS4412CC88 44441288 1-KBYTE EEPROM WITH WRITE PROTECT FUNCTION AND PROGRAMMABLE SECURITY CODE (PSC) ISISSSII®® NOVEMBER 2001 FEATURES • Standard CMOS process • 1024 x 8 bits EEPROM organization • Byte-wise addressing • Byte-wise erase/write • Irreversible byte-wise write protection • Single 5V power supply for read and write/erase • Low power operation: – 3 mA typical active current • 5 ms programming time • 3-wire serial interface • 20 KHz serial clock rate • Contact configuration and serial interface, ISO standard 7816 (Synchronous Transmission) www.DataSheet4U.com compatible. • High ESD protection: > 4 KV • High reliability: – 1,000,000 erase/write cycles guaranteed – 10 years data retention • Wide operating temperature range – 0 to +70°C Commercial; –40 to +85°C Industrial Additional feature of IS23SC4428: • 2-byte Programmable Security Code (PSC) for memory write/erase protection DESCRIPTION IS23SC4418 IS23SC4418 contains 1024 x 8 bits of EEPROM with programmable write protection for each byte. Random read access to any byte in the memory is always possible. The memory can also be erased and written byte by byte. Erasing old data in the byte location must be performed before new data can be written to the location. Each byte in the memory has a corresponding protect bit. The protect bits are only one-time programmable and cannot be erased. After the protect bits are enabled (logic 0), the corresponding bytes can never be changed again. A write-protect bit with data-compare function is available for user to verify the data in the memory before enabling the protect bit. IS23SC4428 IS23SC4428 offers all the features in IS23SC4418. In addition, it offers two bytes of Programmable Security Code (PSC) against unauthorized memory write/erase operations. All the memory, except for the PSC can always be read, but the memory can be written or erased only after PSC verification. If the user fails to enter the correct PSC in eight consecutive attempts, the device will block any further PSC entry attempts and the memory can never be erased or written again. The PSC bytes are pre-programmed by the manufacturer with a code, which is specified for the customer for device transport security purposes, before the devices are shipped to the customer. The Error Counter will be pre-erased by the manufacturer to allow maximum attempts (maximum of eight) for PSC entry. ISSI reserves the right to make changes to its products at any time without notice in order to improve design and supply the best possible product. We assume no responsibility for any errors which may appear in this publication. © Copyright 1999, Integrated Silicon Solution, Inc. Integrated Silicon Solution, Inc. — 1-800-379-4774 REV. A 11/01/01 1 1 page IS23SC4418 IS23SC4428 ISSI ® Table 1. Control Words for IS23SC4418/4428 Commands Command Name Byte 1 S0 S1 S2 S3 S4 S5 Read 8-bits data without protect bit 011100 Read 9-bits data with protect bit 001100 Write and erase without protect bit(1) 110011 Write and erase with protect bit(1) 100011 Write protect bit with data comparison(1) 0 0 0 0 1 1 A8 A9 A8 A9 A8 A9 A8 A9 A8 A9 A8 A9 Byte 2 A0-A7 A0-A7 A0-A7 A0-A7 A0-A7 A0-A7 Byte 3 D0-D7 Don't Care Don't Care Input data Input data Compare data Additional Commands for IS23SC4428 only(3) Write Error Counter 010011 11 FDH Bit Mask Verify first PSC byte 101100 11 FEH PSC byte 1 Verify second PSC byte 101100 11 FFH PSC byte 2 Write and erase first PSC byte without protect bit(2) 110011 11 FEH PSC byte 1 Write and erase second PSC byte without protect bit(2) 110011 11 FFH PSC byte 2 Write and erase first PSC byte with protect bit(2) 100011 11 FEH PSC byte 1 Write and erase second PSC byte with protect bit(2) 100011 11 FFH PSC byte 2 Read 8-bits first PSC byte without protect bit(2) 011100 11 FEH Don't Care Read 8-bits second PSC byte without protect bit 011100 11 FFH Don't Care Read 9-bits first PSC byte with protect bit 001100 11 FEH Don't Care Read 9-bits second PSC byte with protect bit 001100 11 FFH Don't Care Notes: 1. If the protect bit of the byte address is enabled, the write command will have no effect on the byte content. 2. If the protect bit of the PSC byte is enabled, the write command will have no effect on the PSC byte. 3. For IS23SC4428, locations (1021-1023) are occupied by Error Counter and PSC codes and thus cannot be used for general data storage. Integrated Silicon Solution, Inc. — 1-800-379-4774 REV. A 11/01/01 5 5 Page IS23SC4418 IS23SC4428 ISSI ® DC CHARACTERISTICS (TA = 0° to 70°C, VCC = 5.0V ± 10%, GND = 0V) Symbol Parameter VCC Supply Voltage ICC Supply Current VIH Input HIGH Voltage (I/O, CLK, RST) VIL Input LOW Voltage (I/O, CLK, RST) IIH Input HIGH Current (I/O, CLK, RST) IOL Output LOW Current IOH output HIGH Leakage Current Test Conditions VOL = 0.4V, open drian VOH = 5V, open drian Min. 4.5 — 3.5 0 — 0.5 — Typ. 5.0 3 — — — — — Max. 5.5 10 5.0 0.8 10 — 10 Unit V mA V V µA mA µA AC CHARACTERISTICS (TA = 0° to 70°C, VCC = 5.0V ± 10%, GND = 0V) Symbol fC tRE tARE tH tL tW tE tRSTS1 tRSTS2 tRSTH tDS tDH tD tR tF Parameter Clock Frequency Reset Time Answer to Reset Clock HIGH Period Clock LOW Period Write Time Erase Time Reset Setup Time 1 Reset Setup Time 2 Reset Hold Time Write Data Setup Time Write Data Hold Time Read Data Delay Time Rise Time (I/O, CLK, RST) Fall Time (I/O, CLK, RST) Test Conditions (fc = 20 KHz) (fc = 20 KHz) Min. — 9 20 10 10 5 5 4 4 4 4 4 6 — — Typ. 20 — 50 — — — — — — — — — — — — Max. — — — — — — — — — — — — — 1 1 Unit KHz µs µs µs µs ms ms µs µs µs µs µs µs µs µs Integrated Silicon Solution, Inc. — 1-800-379-4774 REV. A 11/01/01 11 11 Page

Páginas	Total 12 Páginas
PDF Descargar	[ Datasheet IS23SC4418.PDF ]

Hoja de datos destacado

Número de pieza	Descripción	Fabricantes
IS23SC4418	(IS23SC4418 / IS23SC4428) 1-KBYTE EEPROM	ISSI

Número de pieza	Descripción	Fabricantes
SLA6805M	High Voltage 3 phase Motor Driver IC.	Sanken
SDC1742	12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.	Analog Devices

DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.

DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar