TMS27C020 262144 BY 8-BIT UV ERASABLE TMS27PC020 262144 BY 8-BIT PROGRAMMABLE READ-ONLY MEMORIES

SMLS020C - NOVEMBER 1990 - REVISED SEPTEMBER 1997

features

Organization...262144 by 8 Bits
Single 5-V Power Supply
Operationally Compatible With Existing Megabit EPROMs
Industry Standard 32-Pin Dual-In-line Package and 32-Lead Plastic Leaded Chip Carrier
All Inputs/Outputs Fully TTL Compatible
±10% V_CC Tolerance
Max Access/Min Cycle Time
8-Bit Output For Use in Microprocessor-Based Systems
Very High-Speed SNAP! Pulse Programming
Power Saving CMOS Technology
3-State Output Buffers
400 mV Minimum DC Noise Immunity With Standard TTL Loads
Latchup Immunity of 250 mA on All Input and Output Pins
No Pullup Resistors Required
Low Power Dissipation (V_CC = 5.5 V)
- Active...165 mW Worst Case
- Standby...0.55 mW Worst Case (CMOS-Input Levels)
Temperature Range Options

description

The TMS27C020 series are 262144 by 8-bit (2097152-bit), ultraviolet (UV) light erasable, electrically programmable read-only memories (EPROMs).

The TMS27PC020 series are one-time programmable (OTP) electrically programmable read-only memories (PROMs).

These devices are fabricated using power-saving CMOS technology for high speed and simple interface with MOS and bipolar circuits. All inputs (including program data inputs) can be driven by Series 74 TTL circuits without the use of external pullup resistors. Each output can drive one Series 74 TTL circuit without external resistors.

The TMS27C020 EPROM is offered in a dual-in-line ceramic package (J suffix) designed for insertion in mounting hole rows on 15,2-mm (600-mil) centers. The TMS27C020 is also offered with two choices of temperature ranges of 0° to 70°C (JL suffix) and -40°C to 85°C (JE suffix). See Table 1.

The TMS27PC020 is offered in a 32-lead plastic leaded chip carrier using 1,25 mm (50 mil) lead spacing (FM suffix). The TMS27PC020 is offered with two choices of temperature ranges of 0°C to 70°C (FML suffix) and -40°C to 85°C (FME suffix). See Table 1.

These EPROMs operate from a single 5-V supply (in the read mode), they are ideal for use in microprocessor-based systems. One other (13 V) supply is needed for programming. All programming signals are TTL level. For programming outside the system, existing EPROM programmers can be used.

Title: 262144 BY 8-BIT PROGRAMMABLE READ-ONLY MEMORIES
Product Family: EPROM
Device Functionality: EPROM-2M(256KX8)
Orderable Devices: TMS27C020-10JL, TMS27C020-12JL, TMS27C020-15JL, TMS27PC020-12FML, TMS27PC020-15FME, TMS27PC020-15FML, TMS27PC020-20FML

View the complete PDF datasheet: smls020c.pdf (201 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:TMS27C020, TMS27PC020

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