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NXP Semiconductors Electronic Components Datasheet

PCA24S08A Datasheet

1024 x 8-bit CMOS EEPROM

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PCA24S08A
1024 × 8-bit CMOS EEPROM with access protection
Rev. 01 — 19 January 2010
Product data sheet
1. General description
The PCA24S08A provides 8192 bits of serial Electrically Erasable and Programmable
Read-Only Memory (EEPROM) organized as 1024 words of 8 bits each. Data bytes are
received and transmitted via the serial I2C-bus.
Access permissions limiting reads or writes are set via the I2C-bus to isolate blocks of
memory from improper access.
The PCA24S08A is intended to be pin compatible with standard 24C08 serial EEPROM
devices except for pins 1, 2, and 3, which are address pins in the standard part. Other
exceptions to the PCA24S08A serial EEPROM data sheet are noted in Section 6.6.
All bits are sent to or read from the device, most significant bit first, in a manner consistent
with the 24C08 serial EEPROM. The bit fields in this document are correspondingly listed
with the MSB on the left and the LSB on the right.
The EEPROM memory is broken up into 8 blocks of 1 kbit (128 bytes) each. Within each
block, the memory is physically organized in to 8 pages of 128 bits (16 bytes) each. In
addition to these 8 kbits, there are two more 128-bit pages that are used to store the
access protection and ID information. There are a total of 8448 bits of EEPROM memory
available in the PCA24S08A.
Access protection (both read and write) is organized on a block basis for block 1 through
block 7 and on a page and a block basis for block 0. Protection information for these
blocks and pages is stored in one of the additional pages of EEPROM memory that is
addressed separately from the main data storage array. SeeSection 6.4 for more details.
The ID value is located in the ID page of the EEPROM, the second of the additional
16 byte pages.
Writes from the serial interface may include from one byte to 16 bytes at a time,
depending on the protocol followed by the bus master. All page accesses must be
properly aligned to the internal EEPROM page.
The EEPROM memory offers an endurance of 100,000 write cycles per byte, with 10 year
data retention. Writes to the EEPROM take less than 5 ms to complete.
After manufacturing, all EEPROM bits will be set to a value of ‘1’.


NXP Semiconductors Electronic Components Datasheet

PCA24S08A Datasheet

1024 x 8-bit CMOS EEPROM

No Preview Available !

NXP Semiconductors
PCA24S08A
1024 × 8-bit CMOS EEPROM with access protection
2. Features
„ Non-volatile storage of 8 kbits organized as 8 blocks of 128 bytes each
„ I2C-bus interface logic
„ Compatible with 24C08 serial EEPROM, and alternate source of Atmel AT24RF08C
without the RF interface
„ Write operation:
‹ Byte write mode
‹ 16-byte page write mode
„ Read operation:
‹ Sequential read
‹ Random read
„ Programmable access protection to limit reads and writes
„ Lock/unlock function
„ Write protect feature protecting the full memory array against write operations
„ Self timed write cycle
„ Internal power-on reset
„ High reliability:
‹ Ten years non-volatile data retention time
‹ 100,000 write cycle endurance
„ Low power CMOS technology
„ Operating power supply voltage range of 2.5 V to 3.6 V
„ 0 Hz to 400 kHz clock frequency
„ ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per
JESD22-A115 and 1000 V CDM per JESD22-C101
„ Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA
„ Packages offered: SO8, TSSOP8
3. Ordering information
Table 1. Ordering information
Tamb = 40 °C to +85 °C
Type number
Topside
mark
Package
Name
PCA24S08AD P24S08A SO8
PCA24S08ADP PS08A TSSOP8
Description
plastic small outline package; 8 leads; body width 3.9 mm
plastic thin shrink small outline package; 8 leads; body width 3 mm
Version
SOT96-1
SOT505-1
PCA24S08A_1
Product data sheet
Rev. 01 — 19 January 2010
© NXP B.V. 2010. All rights reserved.
2 of 24


Part Number PCA24S08A
Description 1024 x 8-bit CMOS EEPROM
Maker NXP
Total Page 24 Pages
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