25LC020A-H/SN Microchip Technology, 25LC020A-H/SN Datasheet - Page 14

• Manufacturer Part Number: 25LC020A-H/SN
• Description: 2K, 256 X 8, 2.5V SER EE 150C 8 SOIC 3.90mm (.150") TUBE
• Manufacturer: Microchip Technology

Specifications of 25LC020A-H/SN

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 2K (256 x 8)
• Speed: 5MHz
• Interface: SPI, 3-Wire Serial
• Voltage - Supply: 2.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

25LCXXXA
4.0
The following protection has been implemented to
prevent inadvertent writes to the array:
• The write enable latch is reset on power-up
• A write enable instruction must be issued to set
• After a byte write, page write or STATUS register
• CS must be set high after the proper number of
• Access to the array during an internal write cycle
TABLE 5-1:
DS22136B-page 14
x = don’t care
the write enable latch
write, the write enable latch is reset
clock cycles to start an internal write cycle
is ignored and programming is continued
1 (high)
1 (high)
0 (low)
(pin 3)
WP
DATA PROTECTION
WRITE-PROTECT FUNCTIONALITY MATRIX
(SR bit 1)
WEL
x
0
1
Protected Blocks
Protected
Protected
Protected
Preliminary
Unprotected Blocks
5.0
The 25LCXXXA powers on in the following state:
• The device is in low-power Standby mode
• The write enable latch is reset
• SO is in high-impedance state
• A high-to-low-level transition on CS is required to
(CS = 1)
enter active state
Protected
Protected
Writable
POWER-ON STATE
© 2009 Microchip Technology Inc.
STATUS Register
Protected
Protected
Writable