25LC320T/SN Microchip Technology, 25LC320T/SN Datasheet - Page 10
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25LC320T/SN
Manufacturer Part Number
25LC320T/SN
Description
IC,SERIAL EEPROM,4KX8,CMOS,SOP,8PIN,PLASTIC
Manufacturer
Microchip Technology
Datasheet
1.25AA320-ISN.pdf
(26 pages)
Specifications of 25LC320T/SN
Rohs Compliant
YES
Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Memory Size
32K (4K x 8)
Speed
2MHz
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
25LC320T/SN
Manufacturer:
MICROCHIP
Quantity:
12 000
25AA320/25LC320/25C320
3.5
The Read Status Register instruction (RDSR) provides
access to the STATUS register. The STATUS register
may be read at any time, even during a write cycle. The
STATUS register is formatted as follows:
The Write-In-Process (WIP) bit indicates whether the
25XX320 is busy with a write operation. When set to a
‘
in progress. This bit is read-only.
FIGURE 3-6:
DS21227F-page 10
1
WPEN
’, a write is in progress; when set to a ‘
SCK
SO
CS
7
SI
Read Status Register Instruction
(RDSR)
X
6
X
5
0
0
READ STATUS REGISTER TIMING SEQUENCE
X
4
0
1
BP1
High-Impedance
3
0
2
Instruction
BP0
2
0
3
0
WEL
4
0
1
’, no write is
1
5
WIP
0
0
6
1
7
The Write Enable Latch (WEL) bit indicates the status
of the write enable latch. When set to a ‘
allows writes to the array, when set to a ‘
prohibits writes to the array. The state of this bit can
always be updated via the WREN or WRDI commands
regardless of the state of write protection on the STA-
TUS register. This bit is read-only.
The Block Protection (BP0 and BP1) bits indicate
which blocks are currently write-protected. These bits
are set by the user issuing the WRSR instruction. These
bits are nonvolatile.
See Figure 3-6 for the RDSR timing sequence.
7
8
6
9
Data from STATUS Register
10
5
11
4
12
3
© 2008 Microchip Technology Inc.
13
2
14
1
15
0
1
0
’, the latch
’, the latch