25LC1024-I/PG Microchip Technology, 25LC1024-I/PG Datasheet - Page 13

• Manufacturer Part Number: 25LC1024-I/PG
• Description: EEPROM 128K x 8 - 2.5-5.5V Lead Free Package
• Manufacturer: Microchip Technology

Specifications of 25LC1024-I/PG

• Product Category: EEPROM
• Rohs: yes
• Memory Size: 1 Mbit
• Organization: 131 K x 8
• Data Retention: 200 yr
• Maximum Clock Frequency: 20 MHz
• Maximum Operating Current: 10 mA
• Operating Supply Voltage: 2.5 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Package / Case: DIP-8
• Access Time: 50 ns
• Interface Type: SPI
• Minimum Operating Temperature: - 40 C
• Supply Voltage - Max: 5.5 V
• Supply Voltage - Min: 2.5 V

2.6
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 2-4:
 2010 Microchip Technology Inc.
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
(SR bit 1)
WEL
0
1
1
1
Data Protection
WRITE-PROTECT FUNCTIONALITY MATRIX
(SR bit 7)
WPEN
x
0
1
1
1 (high)
0 (low)
(pin 3)
WP
x
x
Protected Blocks
Protected
Protected
Protected
Protected
2.7
The 25LC1024 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
Unprotected Blocks
Power-On State
Protected
Writable
Writable
Writable
25LC1024
STATUS Register
DS22064D-page 13
Protected
Protected
Writable
Writable