TMS29F040 524288 BY 8-BIT FLASH MEMORY

SMJS820B - APRIL 1996 - REVISED NOVEMBER 1997

features

Single Power Supply 5 V ± 10%
- 3.3 V ± 0.3 V - See '29LF040/'29VF040 Data Sheet (Literature Number SMJS825)
- 2.7 V to 3.6 V - See '29LF040/'29VF040 Data Sheet
Organization...524288 By 8 Bits
Eight Equal Sectors of 64K Bytes
- Any Combination of Sectors Can Be Erased
- Any Combination of Sectors Can Be Marked as Read-Only
Compatible With JEDEC Electrically Erasable Programmable Read-Only Memory (EEPROM) Command Set
Fully Automated On-Chip Erase and Byte-Program Operations
100000 Program/Erase Cycles
Suspend-Erase/Resume-Erase Operation
Compatible With JEDEC Byte-Wide Pinouts
Low-Current Consumption
- Active Read...20 mA Typical
- Active Program/Erase...30 mA Typical
All Inputs/Outputs TTL-Compatible

description

The TMS29F040 is a 524288 by 8-bit (4194304-bit), 5-V single-supply, programmable read-only memory that can be electrically erased and reprogrammed. This device is organized as eight independent 64K-byte sectors and is offered with access times between 60 and 120 ns.

An on-chip state machine controls the program and erase operations. The embedded byte-program and sector/chip-erase functions are fully automatic. The command set is compatible with that of JEDEC 4M-bit EEPROMs. A suspend/resume feature allows access to unaltered memory sectors during a sector-erase operation. Data-protection of any sector combination is accomplished using a hardware sector-protection feature.

Device operations are selected by writing JEDEC-standard commands into the command register using standard microprocessor write timings. The command register acts as input to an internal-state machine that interprets the commands, controls the erase and programming operations, outputs the status of the device, outputs data stored in the device, and outputs the device algorithm-selection code. On initial power-up operation, the device defaults to the read mode.

The TMS29F040 is offered in a 32-pin plastic leaded chip carrier (FM suffix) using 1.27-mm (50-mil) lead pitch and a 32-pin thin small-outline package (DD suffix).

Title: 524288 BY 8-BIT FLASH MEMORY
Product Family: FLASH
Device Functionality: FLASH-4M(512KX8), SECTOR ERASE, EEPROM COMMANDS, SECTOR PROTECT
Orderable Devices: TMS29F040-10C5DDE, TMS29F040-10C5DDL, TMS29F040-10C5FML, TMS29F040-12C5DDE, TMS29F040-12C5DDL, TMS29F040-12C5FME, TMS29F040-12C5FML, TMS29F040-70C5DDL, TMS29F040-70C5FME, TMS29F040-70C5FML, TMS29F040-75C5DDL, TMS29F040-75C5FML, TMS29F040-90C5DDL, TMS29F040-90C5FME, TMS29F040-90C5FML

View the complete PDF datasheet: smjs820b.pdf (450 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:TMS29F040

Go to the Engineering Design Center to locate information on other TI Semiconductor devices.