AT24C32A-10TQ-2.7 ATMEL [ATMEL Corporation], AT24C32A-10TQ-2.7 Datasheet

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AT24C32A-10TQ-2.7

Manufacturer Part Number
AT24C32A-10TQ-2.7
Description
Two-wire Automotive Serial EEPROM 32K (4096 x 8) 64K (8192 x 8)
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
Features
Description
The AT24C32A/64A provides 32,768/65,536 bits of serial electrically erasable and
programmable read only memory (EEPROM) organized as 4096/8192 words of 8 bits
each. The device’s cascadable feature allows up to 8 devices to share a common two-
wire bus. The device is optimized for use in many automotive applications where low
power and low voltage operation are essential. The AT24C32A/64A is available in
space saving 8-lead JEDEC SOIC and 8-lead TSSOP packages and is accessed via
a 2-wire serial interface and is available in a 2.7V (2.7V to 5.5V) version.
Table 1. Pin Configuration
Pin Name
A0 – A2
SDA
SCL
WP
Standard-Voltage Operation
Internally Organized 4096 x 8 (32K), 8192 x 8 (64K)
Automotive Temperature Range –40°C to +125°C
Two-wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise Suppression
Bidirectional Data Transfer Protocol
400 kHz Clock Rate
Write Protect Pin for Hardware Data Protection
32-byte Page Write Mode (Partial Page Writes Allowed)
Self-timed Write Cycle (5 ms Max)
High Reliability
Lead-free/Halogen-free Devices Available
8-lead JEDEC SOIC and 8-lead TSSOP Packages
– 2.7 (V
– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years
CC
= 2.7V to 5.5V)
Function
Address Inputs
Serial Data
Serial Clock Input
Write Protect
GND
A0
A1
A2
GND
A0
A1
A2
8-lead TSSOP
8-lead SOIC
1
2
3
4
1
2
3
4
8
7
6
5
8
7
6
5
VCC
WP
SCL
SDA
VCC
WP
SCL
SDA
Two-wire
Automotive
Serial EEPROM
32K (4096 x 8)
64K (8192 x 8)
AT24C32A
AT24C64A
5120D–SEEPR–6/08

Related parts for AT24C32A-10TQ-2.7

AT24C32A-10TQ-2.7 Summary of contents

Page 1

... The device’s cascadable feature allows devices to share a common two- wire bus. The device is optimized for use in many automotive applications where low power and low voltage operation are essential. The AT24C32A/64A is available in space saving 8-lead JEDEC SOIC and 8-lead TSSOP packages and is accessed via a 2-wire serial interface and is available ...

Page 2

... 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 Figure 1. Block Diagram AT24C32A/64A 2 *NOTICE: Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent dam- age to the device. This is a stress rating only and ...

Page 3

... V the pin to GND. Switching function. Memory AT24C32A/64A, 32K/64K SERIAL EEPROM: The 32K/64K is internally organized as 128/256 pages of 32 bytes each. Random word addressing requires a 12/13-bit data word address. Organization 5120D–SEEPR–6/08 plane is <3 pF. If coupling is >3 pF, Atmel recommends CC , all write operations to the memory are inhibited ...

Page 4

... V Input High Level IH V Output Low Level OL2 V Output Low Level OL1 Note min and V max are reference only and are not tested AT24C32A/64A 4 = 25° 1.0 MHz SCL 40°C to +125°C,V – A Test Condition V = 5.0V READ at 400 kHz ...

Page 5

... DH t Write Cycle Time WR (1) Endurance 5.0V, 25⋅C, Page Mode Notes: 1. This parameter is ensured by characterization only. 5120D–SEEPR–6/08 = 40°C to +125°C, V – A Parameter (1) AT24C32A/64A = +2.7V to +5.5V TTL Gate and CC AT24C32A/AT24C64A 2.7V – 5.5V Min Max Units 400 kHz 1.2 µs 0.6 µ 0.1 0.9 µs 1.2 µs 0.6 µs 0.6 µ ...

Page 6

... EEPROM in 8-bit words. The EEPROM sends a zero during the ninth clock cycle to acknowl- edge that it has received each word. STANDBY MODE: The AT24C32A/64A features a low power standby mode which is enabled: a) upon power-up and b) after the receipt of the stop bit and the completion of any internal operations ...

Page 7

... SCL: Serial Clock, SDA: Serial Data I/O SCL SDA 8th BIT WORDn Note: 1. The write cycle time t is the time from a valid stop condition of a write sequence to the end of the internal clear/write cycle. WR Figure 4. Data Validity 5120D–SEEPR–6/08 ACK STOP CONDITION AT24C32A/64A ( START CONDITION 7 ...

Page 8

... Figure 5. Start and Stop Definition Figure 6. Output Acknowledge AT24C32A/64A 8 5120D–SEEPR–6/08 ...

Page 9

... NOISE PROTECTION: Special internal circuitry placed on the SDA and SCL pins prevent small noise spikes from activating the device. DATA SECURITY: The AT24C32A/64A has a hardware data protection scheme that allows the user to write protect the entire memory when the WP pin ...

Page 10

... The sequential read operation is terminated when the microcontroller does not respond with a zero but does generate a following stop condition (see AT24C32A/64A 10 Figure 11 on page 12). ...

Page 11

... Figure 7. Device Address Figure 8. Byte Write Figure 9. Page Write Notes DON’T CARE bits 2. † = DON’T CARE bits for the 32K Figure 10. Current Address Read 5120D–SEEPR–6/08 AT24C32A/64A 11 ...

Page 12

... Figure 11. Random Read Note DON’T CARE bits Figure 12. Sequential Read AT24C32A/64A 12 5120D–SEEPR–6/08 ...

Page 13

... AT24C32A Ordering Information Ordering Code (2) AT24C32AN-10SQ-2.7 (2) AT24C32A-10TQ-2.7 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 tables. 2. “Q” designates Green package and RoHS Compliant. 8S1 8-lead, 0.150" Wide, Plastic Gull Wing Small Outline (JEDEC SOIC) 8A2 8-lead, 4.4 mm Body, Plastic Thin Shrink Small Outline Package (TSSOP) – ...

Page 14

... Green package and RoHS Compliant. 8S1 8-lead, 0.150" Wide, Plastic Gull Wing Small Outline (JEDEC SOIC) 8A2 8-lead, 4.4mm Body, Plastic Thin Shrink Small Outline Package (TSSOP) –2.7 Low Voltage (2.7V to 5.5V) AT24C32A/64A 14 (1) Package 8S1 8A2 Package Type Options ...

Page 15

... Colorado Springs, CO 80906 R 5120D–SEEPR–6/ TITLE 8S1, 8-lead (0.150" Wide Body), Plastic Gull Wing Small Outline (JEDEC SOIC) AT24C32A/64A Ø Ø END VIEW COMMON DIMENSIONS (Unit of Measure = mm) MIN MAX SYMBOL NOM A 1.35 – ...

Page 16

... Dimension b does not include Dambar protrusion. Allowable Dambar protrusion shall be 0.08 mm total in excess of the b dimension at maximum material condition. Dambar cannot be located on the lower radius of the foot. Minimum space between protrusion and adjacent lead is 0.07 mm. 5. Dimension D and determined at Datum Plane H. 2325 Orchard Parkway San Jose, CA 95131 R AT24C32A/64A TITLE 8A2, 8-lead, 4 ...

Page 17

... Revision History Revision History Revision Date 5120D 6/2008 5120D–SEEPR–6/08 Comments Implemented revision history. AT24C32A/64A 17 ...

Page 18

Headquarters Atmel Corporation 2325 Orchard Parkway San Jose, CA 95131 USA Tel: 1(408) 441-0311 Fax: 1(408) 487-2600 Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to ...

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