Details, datasheet, quote on part number: AM28F256-200JC
DescriptionIc-sm-256k Flash Memory
DatasheetDownload AM28F256-200JC datasheet
Find where to buy


Features, Applications

256 Kilobit x 8-Bit) CMOS 12.0 Volt, Bulk Erase Flash Memory

s High performance 70 ns maximum access time s CMOS Low power consumption 30 mA maximum active current 100 A maximum standby current No data retention power consumption s Compatible with JEDEC-standard byte-wide 32-Pin EPROM pinouts 32-pin PDIP 32-pin PLCC 32-pin TSOP s 10,000 write/erase cycles minimum s Write and erase voltage 5% s Latch-up protected 100 mA from V s Flasherase Electrical Bulk Chip-Erase One second typical chip-erase s Flashrite Programming 10 s typical byte-program 0.5 second typical chip program s Command register architecture for microprocessor/microcontroller compatible write interface s On-chip address and data latches s Advanced CMOS flash memory technology Low cost single transistor memory cell s Automatic write/erase pulse stop timer

The 256 K Flash memory organized as 32 Kbytes of 8 bits each. AMD's Flash memories offer the most cost-effective and reliable read/write nonvolatile random access memory. The Am28F256 is packaged in 32-pin PDIP , PLCC, and TSOP versions. It is designed to be reprogrammed and erased in-system or in standard EPROM programmers. The Am28F256 is erased when shipped from the factory. The standard Am28F256 offers access times as fast as 70 ns, allowing operation of high-speed microprocessors without wait states. To eliminate bus contention, the Am28F256 has separate chip enable (CE and output enable (OE controls. AMD's Flash memories augment EPROM functionality with in-circuit electrical erasure and programming. The Am28F256 uses a command register to manage this functionality, while maintaining a standard JEDEC Flash Standard 32-pin pinout. The command register allows for 100% TTL level control inputs and fixed power supply levels during erase and programming. AMD's Flash technology reliably stores memor y contents even after 10,000 erase and program cycles.

The AMD cell is designed to optimize the erase and programming mechanisms. In addition, the combination of advanced tunnel oxide processing and low internal electric fields for erase and programming operations produces reliable cycling. The Am28F256 uses 5% VPP high voltage input to perform the Flasherase and Flashrite algorithms. The highest degree of latch-up protection is achieved with AMD's proprietar y non-epi process. Latch-up protection is provided for stresses to 100 milliamps on address and data pins from +1 V. The Am28F256 is byte programmable using 10 s programming pulses in accordance with AMD's Flashrite programming algorithm. The typical room temperature programming time of the is a half a second. The entire chip is bulk erased using 10 ms erase pulses according to AMD's Flasherase alrogithm. Typical erasure at room temperature is accomplished in less than one second. The windowed package and the 15-20 minutes required for EPROM erasure using ultra-violet light are eliminated.

Commands are written to the command register using standard microprocessor write timings. Register contents serve as inputs to an internal state-machine which controls the erase and programming circuitry. During write cycles, the command register internally latches address and data needed for the programming and erase operations. For system design simplification, the Am28F256 is designed to support either WE# or CE# controlled writes. During a system write cycle, addresses are latched on the falling edge # or CE# whichever occurs last. Data is latched on the rising edge of WE# or CE# whichever occurs first. To simplify the fol-

lowing discussion, the WE # pin is used as the write cycle control pin throughout the rest of this text. All setup and hold times are with respect to the WE # signal. AMD's Flash technology combines years of EPROM and EEPROM experience to produce the highest levels of quality, reliability, and cost effectiveness. The Am28F256 electrically erases all bits simultaneously using Fowler-Nordheim tunneling. The bytes are programmed one byte at a time using the EPROM programming mechanism of hot electron injection.

DQ0DQ7 VCC VSS VPP Erase Voltage Switch State Control To Array Input/Output Buffers
Chip Enable Output Enable Logic Data Latch


Related products with the same datasheet
Some Part number from the same manufacture
AM28F256-200PC Ic-sm-256k Flash Memory
AM28F512150PC Ic-512k Flash Memory
AM29F010-120PC Ic-1mb 5v Flash Memory
AM29F010-90PC Ic-1mb 5v Flash Memory
AM29F040B-120JC Ic-sm 4mb 5v Flash Memory
AM7200-35PC Ic-256x9 CMOS Fifo
AM7201-35RC Ic-512x9 CMOS Fifo
AM7202A-35RC Ic-1kx9 CMOS Fifo
AM7203A-35RC Ic-2kx9 CMOS Fifo
AM7204A-35RC Ic-4kx9 CMOS Fifo
Same catergory

DAC2815AP : ti DAC2815, Dual 12-Bit Digital-to-analog Converter (8-Bit Port Interface).

ELS-431UBWA : . Industrial standard size. Low power consumption. Categorized for luminous intensity. Audio equipment Instrument panels Digital read out display The ELS-431 series is a large mm (0.39")high seven segment display designed for viewing distances to 7 meters. These displays provide excellent reliability in bright ambient light. These devices are made with.

LTC4300A-3 : Level Shifting Hot Swappable 2-Wire Bus Buffer With Enable. LTC4300A-3 Level Shifting Hot Swappable 2-Wire Bus Buffer with Enable Bidirectional Buffer* for SDA and SCL Lines Increases Fanout Prevents SDA and SCL Corruption During Live Board Insertion and Removal from Backplane Logic Threshold ENABLE Input Isolates Input SDA and SCL Lines from Output Compatible with I2CTM, I2C Fast Mode and SMBus Standards (Up to 400kHz.

MAF8049H : Single-chip 8-bit Microcontroller.

MFU105 : 1W, Ultra-miniature, High Isolation, Single Output Dc/dc Converters. 1W, Ultra-Miniature, High Isolation, Single Output DC/DC Converters Efficiency 79% 3000VDC Isolation MTBF > 2,000,000 Hours Low Cost Input 5, 12 and 24VDC Output 9, 12 and 15VDC Temperature Performance UL 94V-0 Package Material Internal SMD Construction Industry Standard Pinout Taking up as little as 0.16 square inches of board space, Minmax's MFU100.

AK50C5 : AC Current Transducer. AC Current transducer AK-CTransducer for the electronic measurement of AC sinusoidal waveforms, with galvanic isolation between the primary (High power) and the secondary circuits (Electronic circuit). Jumper selectable ranges and self powered transducers. Primary Nominal Current IPN (A.t.RMS) Vd f Supply voltage Load resistance Rated voltage (CAT III,.

EEE-FP1C471AP : 470F Aluminum Capacitor Radial, Can - SMD 16V; CAP ALUM 470UF 16V 20% SMD. s: Capacitance: 470F ; ESR (Equivalent Series Resistance): 80.0 mOhm ; : High Temperature Reflow ; Lifetime @ Temp.: 2000 Hrs @ 105C ; Size / Dimension: 0.315" Dia (8.00mm) ; Lead Spacing: - ; Surface Mount Land Size: 0.327" L x 0.327" W (8.30mm x 8.30mm) ; Mounting Type:.

UVK105CH1R1BW-F : 1.1pF Ceramic Capacitor 0402 (1005 Metric) 50V; CAP CER 1.1PF 50V 0402 HIGH FREQ. s: Capacitance: 1.1pF ; Voltage - Rated: 50V ; Tolerance: 0.1pF ; Package / Case: 0402 (1005 Metric) ; Temperature Coefficient: C0H ; Packaging: Digi-Reel ; : High Q, Low Loss ; Lead Spacing: - ; Operating Temperature: -55C ~ 125C ; Mounting Type: Surface Mount, MLCC.

T356C685K016AT : 6.8F Tantalum Capacitor Radial 16V; CAP TANT 6.8UF 16V 10% RADIAL. s: Capacitance: 6.8F ; Voltage - Rated: 16V ; Tolerance: 10% ; : General Purpose ; Operating Temperature: -55C ~ 125C ; Lead Spacing: 0.200" (5.08mm) ; ESR (Equivalent Series Resistance): - ; Lifetime @ Temp.: - ; Mounting Type: Through Hole ; Type: Conformal Coated ; Package / Case:.

0761655605 : Gold Through Hole Backplane - Specialized Connectors, Interconnect Header, Male Pins; IMPACT BP 3X16 GR SN. s: Color: Black ; Connector Style: Impact, Guide Right ; Connector Type: Header, Male Pins ; Connector Usage: Backplane, Midplane, Orthogonal ; Contact Finish: Gold ; Contact Finish Thickness: 30in (0.76m) ; Contact Layout, Typical: 48 Differential.

LAL03NA3R9K : Fixed Inductors, Coils, Choke 3.9H 200mA Axial -; INDUCTOR 3.9UH 200MA AXIAL LEAD. s: Inductance: 3.9H ; Tolerance: 10% ; Package / Case: Axial ; Packaging: Bulk ; Type: - ; Current: 200mA ; Mounting Type: Through Hole ; Q @ Freq: - ; Frequency - Self Resonant: 65MHz ; DC Resistance (DCR): 1.6 Ohm Max ; Shielding: Unshielded ; Applications: General.

RR0816P-272-B-T5 : 2.7K Ohm 0.063W, 1/16W Chip Resistor - Surface Mount; RES 2.7K OHM 1/16W .1% 0603 SMD. s: Resistance (Ohms): 2.7K ; Power (Watts): 0.063W, 1/16W ; Tolerance: 0.1% ; Packaging: Cut Tape (CT) ; Composition: Thin Film ; Temperature Coefficient: 25ppm/C ; Lead Free Status: Lead Free ; RoHS Status: RoHS Compliant.

379002-E01 : Power, Line Cable Assembly 8.2' (2.5m) -; CORD ITALY ROJ H05VVH2-F 2.5M. s: Length: 8.2' (2.5m) ; Cord Type: H05VVH2-F, Unshielded ; Color: Black ; : - ; Lead Free Status: Lead Free ; RoHS Status: RoHS Compliant.

RCL122533K2FKEG : 33.2K Ohm 2W Chip Resistor - Surface Mount; RES 33.2K OHM 2W 1% 1225 WIDE. s: Resistance (Ohms): 33.2K ; Power (Watts): 2W ; Tolerance: 1% ; Packaging: Tape & Reel (TR) ; Composition: Thick Film ; Temperature Coefficient: 100ppm/C ; Lead Free Status: Lead Free ; RoHS Status: RoHS Compliant.

IP56M0H00 : 56 CONTACT(S), MALE, POWER CONNECTOR. s: Connector Type: POWER CONNECTOR ; Gender: Male ; Number of Contacts: 56.

0-C     D-L     M-R     S-Z