PCB2421P View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
'PCB2421P' PDF : 24 Pages View PDF
Philips Semiconductors
1K dual mode serial EEPROM
Preliminary specification
PCB2421
1 FEATURES
• Single supply with operation 4.5 to 5.5 V
• Completely implements DDC1/DDC2B interface for
monitor identification
• Low power CMOS technology
• Two-wire I2C-bus interface
• Self-timed write cycle (including auto-erase)
• Page-write buffer for up to 8 bytes
• Write-protect pin
• 100 kHz I2C-bus compatibility
• Designed for 10000 erase/write cycles minimum
• Data retention greater than 10 years
• 8-pin DIP and SO package
• Temperature range 0 to +70 °C.
2 GENERAL DESCRIPTION
The Philips PCB2421 is a 128 × 8-bit dual mode serial
Electrically Erasable PROM (EEPROM).
This device is designed for use in applications requiring
storage and serial transmission of configuration and
control information. Two modes of operation have been
implemented: transmit-only mode (DDC1 mode) and
bidirectional mode (DDC2B, or I2C-bus mode). Upon
power-up, the device will be in the transmit-only mode,
sending a serial bitstream of the entire memory array
contents, clocked by the VCLK pin. A valid HIGH-to-LOW
transition on the SCL pin will cause the device to enter the
bidirectional mode, with byte selectable read/write
capability of the memory array. The PCB2421 is available
in a standard 8-pin dual in-line and 8-pin small outline
package operating in a commercial temperature range.
3 ORDERING INFORMATION
TYPE NUMBER
PCB2421P
PCB2421T
NAME
DIP8
SO8
PACKAGE
DESCRIPTION
plastic dual in-line package; 8 leads (300 mil)
plastic small outline package; 8 leads; body width 3.9 mm
VERSION
SOT97-1
SOT96-1
1997 Apr 01
3
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