XL9020 Datasheet, PDF (1/12 Pages) List of Unclassifed Manufacturers – 2,048-Bit Serial Electrically Erasable PROM 2.7 to 5.5 Volt Operation

EXEL Microelectronics, Inc.
XL9020
2,048-Bit Serial Electrically Erasable PROM
2.7 to 5.5 Volt Operation
FEATURES
• 1 MHz Clock Rate
• Extended Temperature Range: -40°C to +85°C
• Low Power Consumption
— Active current 1.5 mA
— Standby current 2µA
• 2.7 to 5.5 volt operation (both READ and
WRITE)
• 4-Wire Bus Interface
• Hardware & Software Write Protection
— Defaults to disabled state at power up
— Software instructions for WRITE-enable/
disable
• Internally Organized as 128 x 16 bits
• Versatile, Easy-to-Use Interface
— READY/BUSY status signal
— Automatic write cycle time-out
• Advanced CMOS E²PROM Technology
• High Reliability
— Endurance: 100,000 cycles per byte
— Data retention: 100 years
• 8-Pin PDIP or SOIC Packages
PIN CONFIGURATIONS
Plastic Dual-in-line
“P” Package
CS 1
SK 2
DI 3
DO 4
8 V_CC
7 R/B
6 WC
5 _GND
EIAJ Small Outline
“F” Package
R/B 1
VCC 2
CS 3
SK 4
8 WC
7 GND
6 DO
5 DI
D0018 ILL A01.2
CS
SK
DI
DO
GND
WC
R/B
VCC
PIN NAMES
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Write Control
READY/BUSY Output
Power Supply
OVERVIEW
The XL9020 is a cost effective 2,048-bit, nonvolatile,
serial E²PROM designed to directly connect with serial
interface. It is fabricated using EXEL's advanced CMOS
E²PROM technology. The XL9020 provides external
read/write memory arranged as 128 registers of 16 bits
each. Four 8-bit instructions control the operation of the
device, which include read, write, write enable and write
disable. The READY/BUSY pin indicates the status of the
device when polled during the WRITE operation. The data
output pin (DO) also indicates the status of the device
during self-timed nonvolatile programming cycle. To pro-
tect against inadvertent writes, the WRITE instruction is
accepted only while the chip is in the write enabled state.
After the initiation of the write cycle, if Chip Select (CS) is
brought into LOW state, while SK is low, the DO pin will
indicate the READY/BUSY status of the chip.
EXEL Microelectronics, Inc.
2150 Commerce Drive • San Jose, CA 95131
Phone [phone] • Fax [phone] • Internet www.exel.com
D0018 5/96
DVPTD 6931-05