AT24C128SX-09DT Atmel, AT24C128SX-09DT Datasheet

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AT24C128SX-09DT

Manufacturer Part Number
AT24C128SX-09DT
Description
Manufacturer
Atmel
Datasheet

Specifications of AT24C128SX-09DT

Lead Free Status / RoHS Status
Compliant
Features
Description
The AT24C128SC/256SC provides 131,072/262,144 bits of serial electrically erasable
and programmable read only memory (EEPROM) organized as 16,384/32,768 words
of 8 bits each. The devices are optimized for use in smart card applications where low-
power and low-voltage operation may be essential. The devices are available in sev-
eral standard ISO 7816 smart card modules (see Ordering Information). All devices
are functionally equivalent to Atmel Serial EEPROM products offered in standard IC
packages (PDIP, SOIC, TSSOP, dBGA), with the exception of the slave address and
Write Protect functions which are not required for smart card applications.
Table 1. Pin Configurations
Figure 1. Card Module Contact
Pad Name
VCC
GND
SCL
SDA
NC
Low-voltage and Standard-voltage Operation, V
Internally Organized 16,384 x 8 and 32,768 x 8
2-wire Serial Interface
Schmitt Trigger, Filtered Inputs for Noise Suppression
Bi-directional Data Transfer Protocol
1 MHz (5V) and 400 kHz (2.7V) Compatibility
64-byte Page Write Mode (Partial Page Writes Allowed)
Self-timed Write Cycle (5 ms Typical)
High Reliability
– Endurance: 1 Million Write Cycles
– Data Retention: 40 Years
– ESD Protection: > 4000V
VCC
NC
Description
Power Supply Voltage
Ground
Serial Clock Input
Serial Data Input/Output
No Connect
CC
= 2.7V to 5.5V
ISO Module Contact
C2, C4, C6, C8
C1
C5
C3
C7
Two-wire Serial
EEPROM Smart
Card Modules
128K (16,384 x 8)
256 (32,768 x 8)
AT24C128SC
AT24C256SC
1661B–SEEPR–04/04
1

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AT24C128SX-09DT Summary of contents

Page 1

... The devices are available in sev- eral standard ISO 7816 smart card modules (see Ordering Information). All devices are functionally equivalent to Atmel Serial EEPROM products offered in standard IC packages (PDIP, SOIC, TSSOP, dBGA), with the exception of the slave address and Write Protect functions which are not required for smart card applications ...

Page 2

Absolute Maximum Ratings* Operating Temperature Storage Temperature Voltage on Any Pin with Respect to Ground Maximum Operating Voltage .......................................... 6.25V DC Output Current........................................................ 5.0 mA Pin Description Memory Organization AT24C128SC/AT24C256SC 2 *NOTICE +125 ...

Page 3

Pin Capacitance (1) Table 2. Pin Capacitance Applicable over recommended operating range from T Symbol Test Condition C Input/Output Capacitance (SDA) I/O C Input Capacitance (SCL) IN Note: This parameter is characterized and is not 100% tested. DC Characteristics (1) ...

Page 4

AC Characteristics (1) Table 4. AC Characteristics Symbol Parameter f Clock Frequency, SCL SCL t Clock Pulse Width Low LOW t Clock Pulse Width High HIGH t Clock Low to Data Out Valid AA Time the bus must be free ...

Page 5

Device Operation 1661B–SEEPR–04/04 CLOCK AND DATA TRANSITIONS: The SDA pin is normally pulled high with an exter- nal device. Data on the SDA pin may change only during SCL low time periods (refer to Data Validity timing diagram). Data changes ...

Page 6

Timing Diagrams Bus Timing Write Cycle Timing Data Validity AT24C128SC/AT24C256SC 6 Figure 3. Bus Timing Note: SCL: Serial Clock; SDA: Serial Data I/O Figure 4. Write Cycle Timing Note: 1. The write cycle time t is the time from a ...

Page 7

Start and Stop Definition Output Acknowledge 1661B–SEEPR–04/04 Figure 6. Start and Stop Definition SDA SCL START Figure 7. Output Acknowledge SCL DATA IN DATA OUT START AT24C128SC/AT24C256SC ACKNOWLEDGE STOP 7 ...

Page 8

Device Addressing Write Operations AT24C128SC/AT24C256SC 8 The 128K/256K EEPROM requires an 8-bit device address word following a start condi- tion to enable the chip for a read or write operation (refer to Figure 8). The device address word consists of ...

Page 9

Figure 10. Page Write Note DON’T CARE bit 2. † = DON’T CARE bit for the 128K Read Operations 1661B–SEEPR–04/04 ACKNOWLEDGE POLLING: Once the internally-timed write cycle has started and the EEPROM inputs are disabled, acknowledge polling ...

Page 10

Figure 12. Random Read Notes DON’T CARE bit 2. † = DON’T CARE bit for the 128K Figure 13. Sequential Read AT24C128SC/AT24C256SC 10 address and serially clocks out the data word. The microcontroller does not respond with ...

Page 11

... Description Package Type M2 – A Module M2 ISO 7816 Smart Card Module M2 – B Module M2 ISO 7816 Smart Card Module with Atmel Logo Note: Formal drawings may be obtained from an Atmel sales office. 1661B–SEEPR–04/04 Package Voltage Range 2.7V–5.5V 2.7V–5.5V 2.7V–5.5V ...

Page 12

... Pitch: 14.25 [mm] *Note: The module dimensions listed refer to the dimensions of the exposed metal contact area. The actual dimensions of the module after excise or punching from the carrier tape are generally 0.4 mm greater in both directions (i.e., a punched M2 module will yield 13.0 x 11.8 mm). ...

Page 13

... No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not auth orized for use as critical components in life support devices or systems. ...

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