AT93C56A ATMEL Corporation, AT93C56A Datasheet

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AT93C56A

Manufacturer Part Number
AT93C56A
Description
Manufacturer
ATMEL Corporation
Datasheet

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1. Features
2. Description
The AT93C56A/66A provides 2048/4096 bits of serial electrically erasable program-
mable read-only memory (EEPROM) organized as 128/256 words of 16 bits each
(when the ORG pin is connected to VCC) and 256/512 words of 8 bits each (when the
ORG pin is tied to ground). The device is optimized for use in many industrial and
commercial applications where low-power and low-voltage operations are essential.
The AT93C56A/66A is available in space-saving 8-lead PDIP, 8-lead JEDEC SOIC, 8-
lead EIAJ SOIC,
Grid Array (ULA), 8-lead TSSOP, and 8-ball dBGA2 packages.
The AT93C56A/66A 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 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.
The AT93C56A/66A is available in 2.7V to 5.5V and 1.8V to 5.5V versions.
Low-voltage and Standard-voltage Operation
User-selectable Internal Organization
Three-wire Serial Interface
Sequential Read Operation
2 MHz Clock Rate (5V)
Self-timed Write Cycle (10 ms Max)
High Reliability
Automotive Devices Available
8-lead JEDEC PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead Ultra Thin mini-MAP
(MLP 2x3), 8-lead Ultra Lead Frame Land Grid Array (ULA), 8-lead TSSOP and 8-ball
dBGA2 Packages
– 2.7 (V
– 1.8 (V
– 2K: 256 x 8 or 128 x 16
– 4K: 512 x 8 or 256 x 16
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
CC
CC
= 2.7V to 5.5V)
= 1.8V to 5.5V)
8-lead Ultra Thin mini-MAP (MLP 2x3)
, 8-lead Ultra Lead Frame Land
Three-wire
Serial
EEPROM
2K (256 x 8 or 128 x 16)
4K (512 x 8 or 256 x 16)
AT93C56A
AT93C66A
3378L–SEEPR–11/07

Related parts for AT93C56A

AT93C56A Summary of contents

Page 1

... Ultra Thin mini-MAP (MLP 2x3) Grid Array (ULA), 8-lead TSSOP, and 8-ball dBGA2 packages. The AT93C56A/66A 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 pin DO ...

Page 2

... Internal Organization NC No Connect 3. Absolute Maximum Ratings* Operating Temperature......................................−55°C to +125°C Storage Temperature .........................................−65°C to +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 AT93C56A/66A 2 8-lead SOIC 8-ball dBGA2 CS 1 VCC ...

Page 3

Figure 3-1. Block Diagram Note: When the ORG pin is connected to VCC, the x 16 organization is selected. When it is connected to ground, the x 8 organization is selected. If the ORG pin is left unconnected and the ...

Page 4

... Output High Voltage OH1 V Output Low Voltage OL2 V Output High Voltage OH2 Note min and V max are reference only and are not tested AT93C56A/66A 4 = 25° 1.0 MHz − 40°C to +85° Test Condition READ at 1.0 MHz V = 5.0V CC WRITE at 1.0 MHz ...

Page 5

Table 3-3. AC Characteristics Applicable over recommended operating range from TTL Gate and 100 pF (unless otherwise noted) Symbol Parameter SK Clock f SK Frequency t SK High Time SKH t SK Low Time SKL Minimum ...

Page 6

... Table 3-4. Instruction Set for the AT93C56A and AT93C66A Op Instruction SB Code READ 1 10 EWEN 1 00 11XXXXXXX ERASE 1 11 WRITE 1 01 ERAL 1 00 10XXXXXXX WRAL 1 00 01XXXXXXX EWDS 1 00 00XXXXXXX Note: The X’s in the address field represent don’t care values and must be clocked. ...

Page 7

... SK. It should be noted that a dummy bit (logic “0”) precedes the 8- or 16-bit data output string. The AT93C56A/66A supports sequential read operations. The device will automatically increment the internal address pointer and clock out the next memory location as long as Chip Select (CS) is held high. In this case, the dummy bit (logic “ ...

Page 8

... Synchronous Data Timing Note: 1. This is the minimum SK period. Table 5-1. Notes: Figure 5-2. READ Timing High Impedance DO AT93C56A/66A 8 Organization Key for Timing Diagrams AT93C56A (2K DON’T CARE value, but the extra clock is required DON’ ...

Page 9

Figure 5-3. EWEN Timing Figure 5-4. EWDS Timing Figure 5-5. WRITE Timing HIGH IMPEDANCE DO 3378L–SEEPR–11/07 ... ... ... ... ...

Page 10

... Figure 5-6. WRAL Timing HIGH IMPEDANCE DO Note: 1. Valid only 4.5V to 5.5V. CC Figure 5-7. ERASE Timing HIGH IMPEDANCE DO AT93C56A/66A ... ... N-1 N ... D0 N BUSY READY STANDBY CHECK STATUS HIGH IMPEDANCE BUSY READY ...

Page 11

Figure 5-8. ERAL Timing HIGH IMPEDANCE DO Note: 1. Valid only 4.5V to 5.5V. CC 3378L–SEEPR–11/ STANDBY CHECK STATUS BUSY HIGH IMPEDANCE ...

Page 12

... AT93C56A Ordering Information Ordering Code (2) AT93C56A-10PU-2.7 (2) AT93C56A-10PU-1.8 (2) AT93C56A-10SU-2.7 (2) AT93C56A-10SU-1.8 (2) AT93C56AW-10SU-2.7 (2) AT93C56AW-10SU-1.8 (2) AT93C56A-10TU-2.7 (2) AT93C56A-10TU-1.8 (2) AT93C56AU3-10UU-1.8 AT93C56AD3-DH-T (2) AT93C56AY1-10YU-1.8 (Not recommended for new design) (3) AT93C56AY6-10YH-1.8 (4) AT93C56A-W1.8-11 Notes: 1. For 2.7V devices used in the 4.5V to 5.5V range, please refer to performance values in the AC and DC characteristics table. 2. “U” designates Green package + RoHS compliant. ...

Page 13

AT93C66A Ordering Information Ordering Code (2) AT93C66A-10PU-2.7 (2) AT93C66A-10PU-1.8 (2) AT93C66A-10SU-2.7 (2) AT93C66A-10SU-1.8 (2) AT93C66AW-10SU-2.7 (2) AT93C66AW-10SU-1.8 (2) AT93C66A-10TU-2.7 (2) AT93C66A-10TU-1.8 (2) AT93C66AU3-10UU-1.8 AT93C66AD3-DH-T (2) AT93C66AY1-10YU-1.8 (Not recommended for new design) (3) AT93C66AY6-10YH-1.8 (4) AT93C66A-W1.8-11 Notes: 1. For 2.7V ...

Page 14

... E and eA measured with the leads constrained to be perpendicular to datum. 5. Pointed or rounded lead tips are preferred to ease insertion and b3 maximum dimensions do not include Dambar protrusions. Dambar protrusions shall not exceed 0.010 (0.25 mm). 2325 Orchard Parkway San Jose, CA 95131 R AT93C56A/66A ...

Page 15

JEDEC SOIC e Side View Note: These drawings are for general information only. Refer to JEDEC Drawing MS-012, Variation AA for proper dimensions, tolerances, datums, etc. 1150 E. Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 R 8.3 ...

Page 16

... Dimension b applies to metallized terminal and is measured between 0.15 mm and 0.30 mm from the terminal tip. If the terminal has the optional radius on the other end of the terminal, the dimension should not be measured in that radius area. 2325 Orchard Parkway San Jose, CA 95131 R AT93C56A/66A 16 A Pin 1 Index ...

Page 17

TSSOP Pin 1 indicator this corner N Top View Side View Notes: 1. This drawing is for general information only. Refer to JEDEC Drawing MO-153, Variation AA, for proper dimensions, tolerances, ...

Page 18

... Bottom View 8 Solder Balls 1. This drawing is for general information only. 2. Dimension ‘b’ is measured at maximum solder ball diameter 1150E Cheyenne Mt. Blvd Colorado Springs, CO 80906 R AT93C56A/66A TITLE 8U3-1, 8-ball, 1.50 x 2.00 mm Body, 0.50 mm pitch, Small Die Ball Grid Array Package (dBGA2) 1 ...

Page 19

ULA PIN # TOP VIEW 1150 E. Cheyenne Mtn. Blvd. Colorado Springs, CO 80906 R 3378L–SEEPR–11/ SIDE VIEW SYMBOL ...

Page 20

... Revision History Revision No. 3378L 3378K AT93C56A/66A 20 Date Comments Updated to new template 11/2007 Added ULA package offering Removed DC/Don’t Connect and replaced with NC/No Conenct Adjusted size of Block diagram on pg. 2 12/2006 Made all diagrams on pages 6-9 consistently the same size Corrected 8U3-1 3378L–SEEPR–11/07 ...

Page 21

... Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. © 2007 Atmel Corporation. All rights reserved. Atmel of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. International Atmel Asia ...

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