25LC320A-H/SN Microchip Technology, 25LC320A-H/SN Datasheet - Page 14
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25LC320A-H/SN
Manufacturer Part Number
25LC320A-H/SN
Description
32K, 4K X 8, 2.5V SER EE 150C 8 SOIC 3.90mm (.150") TUBE
Manufacturer
Microchip Technology
Datasheet
1.25LC160A-ISN.pdf
(24 pages)
Specifications of 25LC320A-H/SN
Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Memory Size
32K (4K 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
25LCXXX
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:
DS22131C-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
(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
Preliminary
Protected
Protected
Protected
Protected
5.0
The 25LCXXX 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
© 2009 Microchip Technology Inc.
STATUS Register
Protected
Protected
Writable
Writable