Rainbow Electronics AT24C1024B - Manual

1
Features
• Low-voltage Operation
– 1.8V (V
CC
= 1.8V to 3.6V)
– 2.5V (V
CC
= 2.5V to 5.5V)
• Internally Organized 131,072 x 8
• Two-wire Serial Interface
• Schmitt Triggers, Filtered Inputs for Noise Suppression
• Bidirectional Data Transfer Protocol
• 400 kHz (1.8V) and 1 MHz (5V, 2.5V) Clock Rate
• Write Protect Pin for Hardware and Software Data Protection
• 256-byte Page Write Mode (Partial Page Writes Allowed)
• Random and Sequential Read Modes
• Self-timed Write Cycle (5 ms Typical)
• High Reliability
– Endurance: 1,000,000 Write Cycles/Page
– Data Retention: 40 Years
• 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead TSSOP, 8-lead Ultra Thin
Small Array (SAP), and 8-ball dBGA2 Packages
• Die Sales: Wafer Form, Tape and Reel and Bumped Die
Description
The AT24C1024B provides 1,048,576 bits of serial electrically erasable and program-
mable read only memory (EEPROM) organized as 131,072 words of 8 bits each. The
device’s cascadable feature allows up to four devices to share a common two-wire
bus. The device is optimized for use in many industrial and commercial applications
where low-power and low-voltage operation are essential. The devices are available
in space-saving 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead EIAJ SOIC, 8-lead TSSOP,
8-ball dBGA2 and 8-lead Ultra Thin SAP packages. In addition, the entire family is
available in 1.8V (1.8V to 3.6V) and 2.5V (2.5V to 5.5V) versions.
Table 1. Pin Configurations
Pin Name Function
A1 Address Input
A2 Address Input
SDA Serial Data
SCL Serial Clock Input
WP Write Protect
NC No Connect
Two-wire Serial
EEPROM
1M (131,072 x 8)
AT24C1024B
with Two Device
Address Inputs
Preliminary
Rev. 5194D–SEEPR–5/07
8-lead PDIP
1
2
3
4
8
7
6
5
NC
A1
A2
GND
VCC
WP
SCL
SDA
8-lead TSSOP
1
2
3
4 8
7
6
5 VCC
WP
SCL
SDA
NC
A1
A2
GND
8-lead SOIC
1
2
3
4
8
7
6
5
NC
A1
A2
GND
VCC
WP
SCL
SDA
8-lead Ultra-Thin SAP
Bottom View
VCC
WP
SCL
SDA
NC
A1
A2
GND
1
2
3
4
8
7
6
5
8-lead dBGA2
Bottom View
VCC
WP
SCL
SDA
NC
A1
A2
GND
1
2
3
4
8
7
6
5