AT93C46A-10PU-2.7 Просмотр технического описания (PDF) - Atmel Corporation

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AT93C46A-10PU-2.7

Three-wire Serial EEPROM

Atmel Corporation 

Features

• Low-voltage and Standard-voltage Operation

– 2.7 (VCC = 2.7V to 5.5V)

– 1.8 (VCC = 1.8V to 5.5V)

• Three-wire Serial Interface

• 2 MHz Clock Rate (5V) Compatibility

• Self-timed Write Cycle (10 ms max)

• High Reliability

– Endurance: 1 Million Write Cycles

– Data Retention: 100 Years

• Automotive Grade, Extended Temperature, and Lead-free/Halogen-free Devices

Available

• 8-lead PDIP, 8-lead JEDEC SOIC, and 8-lead TSSOP Packages

Description

The AT93C46A provides 1024 bits of serial electrically-erasable programmable read-

only memory (EEPROM) organized as 64 words of 16 bits each. The device is opti-

mized for use in many industrial and commercial applications where low-power and

low-voltage operation are essential. The AT93C46A is available in space-saving 8-

lead PDIP, 8-lead JEDEC SOIC, and 8-lead TSSOP packages.

The AT93C46A is enabled through the Chip Select pin (CS) and accessed via a three-

wire serial interface consisting of Data Input (DI), Data Output (DO), and Shift Clock

(SK). Upon receiving a Read instruction at DI, the address is decoded and the data is

clocked out serially on the data output DO pin. The write cycle is completely self-timed

and no separate erase cycle is required before write. The write cycle is only enabled

when the part is in the erase/write enable state. When CS is brought high following the

initiation of a write cycle, the DO pin outputs the ready/busy status of the part.

The AT93C46A is available in 2.7V to 5.5V and 1.8V to 5.5V versions.

Table 1. Pin Configuration

Pin Name

Function

CS

Chip Select

SK

Serial Data Clock

DI

Serial Data Input

DO

Serial Data Output

GND

Ground

VCC

Power Supply

8-lead PDIP

CS 1

SK 2

DI 3

DO 4

8 VCC

7 DC

6 NC

5 GND

8-lead SOIC

CS 1

SK 2

DI 3

DO 4

8 VCC

7 DC

6 NC

5 GND

8-lead TSSOP

CS 1

SK 2

DI 3

DO 4

8 VCC

7 DC

6 NC

5 GND

Three-wire

Serial EEPROM

1K (64 x 16)

AT93C46A

Note: Not recommended for new

design; please refer to

AT93C46E datasheet.

Rev. 0539K–SEEPR–2/07

1

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