AT93C46A-10PC-2.5 ATMEL Corporation, AT93C46A-10PC-2.5 Datasheet

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AT93C46A-10PC-2.5

Manufacturer Part Number
AT93C46A-10PC-2.5
Description
3-Wire Serial EEPROM 1K (64 x 16)
Manufacturer
ATMEL Corporation
Datasheet
Features
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-pin
PDIP, 8-pin JEDEC, and 8-Pin TSSOP packages.
The AT93C46A is enabled through the Chip Select pin (CS), and accessed via a 3-
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 pin DO. 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.
Pin Configurations
Pin Name
CS
SK
DI
DO
GND
VCC
NC
DC
Low-Voltage and Standard-Voltage Operation
3-Wire Serial Interface
2 MHz Clock Rate (5V) Compatibility
Self-Timed Write Cycle (10 ms max)
High Reliability
Automotive Grade and Extended Temperature Devices Available
8-Pin PDIP, 8-Pin JEDEC SOIC, and 8-Pin TSSOP Packages
– 5.0 (V
– 2.7 (V
– 2.5 (V
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
– ESD Protection: > 4,000V
CC
CC
CC
Function
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
No Connect
Don’t Connect
= 4.5V to 5.5V)
= 2.7V to 5.5V)
= 2.5V to 5.5V)
DO
CS
SK
DI
DO
CS
SK
DI
DO
CS
SK
DI
1
2
3
4
8-Pin TSSOP
1
2
3
4
1
2
3
4
8-Pin SOIC
8-Pin PDIP
8
7
6
5
8
7
6
5
8
7
6
5
VCC
DC
NC
GND
VCC
DC
NC
GND
VCC
DC
NC
GND
3-Wire
Serial EEPROM
1K (64 x 16)
AT93C46A
3-Wire, 1K
Serial E
2
PROM
Rev. 0539C–07/98
1

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AT93C46A-10PC-2.5 Summary of contents

Page 1

... The AT93C46A is available in space saving 8-pin PDIP, 8-pin JEDEC, and 8-Pin TSSOP packages. The AT93C46A is enabled through the Chip Select pin (CS), and accessed via a 3- wire serial interface consisting of Data Input (DI), Data Output (DO), and Shift Clock (SK) ...

Page 2

... The AT93C46A is available in 4.5V to 5.5V, 2.7V to 5.5V, and 2.5V to 5.5V versions. Absolute Maximum Ratings* Operating Temperature .................................. - +125 C Storage Temperature ..................................... - +150 C Voltage on Any Pin with Respect to Ground .....................................-1.0V to +7.0V Maximum Operating Voltage........................................... 6.25V DC Output Current........................................................ 5.0 mA Block Diagram (1) Pin Capacitance Applicable over recommended operating range from T Test Conditions ...

Page 3

DC Characteristics Applicable over recommended operating range from + +2.5V to +5.5V (unless otherwise noted Symbol Parameter V Supply Voltage CC1 V Supply Voltage CC2 V Supply Voltage CC3 ...

Page 4

... PD0 Status Valid High Impedance DF t Write Cycle Time WP (1) Endurance 5.0V Page Mode Note: 1. This parameter is characterized and is not 100% tested. Instruction Set for the AT93C46A Instruction SB Op Code READ 1 10 EWEN 1 00 ERASE 1 11 WRITE 1 ...

Page 5

... Functional Description The AT93C46A is accessed via a simple and versatile three-wire serial communication interface. Device opera- tion is controlled by seven instructions issued by the host processor. A valid instruction starts with a rising edge of CS and consists of a Start Bit (logic ‘1’) followed by the appropriate Op Code and the desired memory Address location ...

Page 6

... Timing Diagrams Synchronous Data Timing Note: 1. This is the minimum SK period. AT93C46A 6 ...

Page 7

... READ Timing (1) EWEN Timing Note: 1. Requires a minimum of nine clock cycles. (1) EWDS Timing Note: 1. Requires a minimum of nine clock cycles AT93C46A ...

Page 8

... WRITE Timing HIGH IMPEDANCE (1)(2) WRAL Timing HIGH IMPEDANCE DO Notes: 1. Valid only 4.5V to 5.5V Requires a minimum of nine clock cycles. AT93C46A READY BUSY BUSY READY t WP ...

Page 9

ERASE Timing (1) TERAL Timing Note: 1. Valid only 4.5V to 5.5V ...

Page 10

... Ordering Code 2000 AT93C46A-10PC AT93C46A-10SC AT93C46A-10TC 2000 AT93C46A-10PI AT93C46A-10SI AT93C46A-10TI 1000 AT93C46A-10PC-2.7 AT93C46A-10SC-2.7 AT93C46A-10TC-2.7 1000 AT93C46A-10PI-2.7 AT93C46A-10SI-2.7 AT93C46A-10TI-2.7 500 AT93C46A-10PC-2.5 AT93C46A-10SC-2.5 AT93C46A-10TC-2.5 500 AT93C46A-10PI-2.5 AT93C46A-10SI-2.5 AT93C46A-10TI-2.5 Package Type Options Package Operation Range 8P3 Commercial 8S1 ( 8P3 Industrial 8S1 ...

Page 11

Packaging Information 8P3, 8-Lead, 0.300" Wide, Plastic Dual Inline Package (PDIP)Dimensions in Inches and (Millimeters) JEDEC STANDARD MS-001 BA .400 (10.16) .355 (9.02) PIN 1 .300 (7.62) REF .210 (5.33) MAX .100 (2.54) BSC SEATING PLANE .150 (3.81) .115 (2.92) ...

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