ATMEL AT27C516-55JC, AT27C516-45VI, AT27C516-45VC, AT27C516-45JI, AT27C516-45JC Datasheet

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ATMEL AT27C516-55JC, AT27C516-45VI, AT27C516-45VC, AT27C516-45JI, AT27C516-45JC Datasheet

AT27C516

Features

Fast Read Access Time - 45 ns

Low Power CMOS Operation

100 μA max. Standby

JEDEC Standard Packages 44-Lead PLCC

40-Lead TSOP (10mm x 14mm)

5V ± 10% Power Supply

High Reliability CMOS Technology 2000V ESD Protection

200 mA Latchup Immunity

RapidProgramming Algorithm - 50 μs/word (typical)

CMOS and TTL Compatible Inputs and Outputs

Integrated Product Identification Code

Commercial and Industrial Temperature Ranges30 mA max. Active at 5 MHz

Description

The AT27C516 is a low-power, high performance 524,288 bit one-time programmable read only memory (OTP EPROM) organized 32K by 16 bits. It requires only one 5V power supply in normal read mode operation. Any word can be accessed in less than 45 ns, eliminating the need for speed reducing WAIT states. The by-16 organization make this part ideal for high-performance 16 and 32 bit microprocessor sys-

tems.

(continued)

Pin Configurations

 

Pin Name

Function

 

A0 - A14

Addresses

 

O0 - O15

Outputs

 

 

 

 

 

 

CE

Chip Enable

 

 

 

 

 

 

 

 

 

 

 

OE

Output Enable

 

 

 

 

 

 

 

 

 

 

PGM

Program Strobe

 

NC

No Connect

 

 

 

 

 

Note: Both GND pins must be connected.

PLCC Top View

TSOP Top View

Type 1

Note: PLCC Package Pins 1 and 23 are DON’T CONNECT.

512K (32K x 16) OTP CMOS EPROM

0362C

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Description (Continued)

In read mode, the AT27C516 typically consumes 15 mA. Standby mode supply current is typically less than 10 μA.

The AT27C516 is available in industry standard JEDEC-approved one-time programmable (OTP) plastic PLCC and TSOP packages. The device features two-line control (CE, OE) to eliminate bus contention in high-speed systems.

With 32K word storage capability, the AT27C516 allows firmware to be stored reliably and to be accessed by the system without the delays of mass storage media.

Atmel’s 27C516 have additional features to ensure high quality and efficient production use. The RapidProgramming Algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 50 μs/word. The Integrated Product Identification Code electronically identifies the device and manufacturer. This feature is used by industry standard programming equipment to select the proper programming algorithms and voltages.

System Considerations

Switching between active and standby conditions via the Chip Enable pin may produce transient voltage excursions. Unless accommodated by the system design, these transients may exceed data sheet limits, resulting in device non-conformance. At a minimum, a 0.1 μF high frequency, low inherent inductance, ceramic capacitor should be utilized for each device. This capacitor should be connected between the VCC and Ground terminals of the device, as close to the device as possible. Additionally, to stabilize the supply voltage level on printed circuit boards with large EPROM arrays, a 4.7 μF bulk electrolytic capacitor should be utilized, again connected between the VCC and Ground terminals. This capacitor should be positioned as close as possible to the point where the power supply is connected to the array.

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AT27C516

 

 

AT27C516

Block Diagram

Absolute Maximum Ratings*

 

 

Temperature Under Bias

................ -55°C to +125°C

 

Storage Temperature......................

-65°C to +150°C

 

Voltage on Any Pin with

 

(1)

 

Respect to Ground.........................

-2.0V to +7.0V

 

Voltage on A9 with

 

(1)

 

Respect to Ground ......................

- 2.0V to +14.0V

 

VPP Supply Voltage with

 

(1)

 

Respect to Ground.......................

- 2.0V to +14.0V

*NOTICE: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

Note: 1. Minimum voltage is -0.6V dc which may undershoot to - 2.0V for pulses of less than 20 ns. Maximum output

pin voltage is VCC + 0.75V dc which may overshoot to +7.0V for pulses of less than 20 ns.

Operating Modes

 

 

 

 

 

 

 

 

 

 

Mode \ Pin

CE

OE

PGM

Ai

VPP

Outputs

Read

VIL

VIL

X (1)

Ai

X

DOUT

Output Disable

X

VIH

X

X

X

High Z

Standby

VIH

X

X

X

X (5)

High Z

Rapid Program (2)

VIL

VIH

VIL

Ai

VPP

DIN

PGM Verify

VIL

VIL

VIH

Ai

VPP

DOUT

PGM Inhibit

VIH

X

X

X

VPP

High Z

Product Identification (4)

VIL

VIL

X

A9 = VH (3)

VCC

Identification

A0 = VIH or VIL

Code

 

 

 

 

 

 

 

A1 - A14 = VIL

 

 

 

 

 

 

 

 

 

 

Notes: 1. X can be VIL or VIH.

 

 

 

 

4. Two identifier words may be selected. All Ai inputs are held

2. Refer to Programming characteristics.

 

 

 

 

low (VIL), except A9 which is set to VH and A0 which is tog-

3. VH = 12.0 ± 0.5V.

 

 

 

 

 

 

gled low (VIL) to select the Manufacturer’s Identification

 

 

 

 

 

 

 

word and high (VIH) to select the Device Code word.

5. Standby VCC current (ISB) is specified with VPP = VCC. VCC > VPP will cause a slight increase in ISB.

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