Microchip Technology 25LC320/SN Memory IC SOIC-8 25LC320/SN Ficha De Dados
Códigos do produto
25LC320/SN
© 2008 Microchip Technology Inc.
DS21227F-page 1
25AA320/25LC320/25C320
Device Selection Table
Features:
• Low-Power CMOS Technology:
- Write current: 3 mA maximum
- Read current: 500
μA, typical
- Standby current: 500 nA, typical
• 4096 x 8 Bit Organization
• 32 Byte Page
• Write Cycle Time: 5 ms Maximum
• Self-Timed Erase and Write Cycles
• Block Write Protection:
- Protect none, 1/4, 1/2 or all of array
• Built-in Write Protection:
- Power on/off data protection circuitry
- Write enable latch
- Write-protect pin
• Sequential Read
• High Reliability:
- Endurance: 1M E/W cycles
- Data retention: > 200 years
- ESD protection: > 4000V
• 8-Pin PDIP, SOIC and TSSOP Packages
• 14-Lead TSSOP Package
• Temperature Ranges Supported:
Description:
The Microchip Technology Inc. 25AA320/25LC320/
25C320 (25XX320
25C320 (25XX320
*
) are 32 Kbit serial Electrically
Erasable PROMs. The memory is accessed via a
simple Serial Peripheral Interface (SPI) compatible
serial bus. The bus signals required are a clock input
(SCK) plus separate data in (SI) and data out (SO)
lines. Access to the device is controlled through a Chip
Select (CS) input.
simple Serial Peripheral Interface (SPI) compatible
serial bus. The bus signals required are a clock input
(SCK) plus separate data in (SI) and data out (SO)
lines. Access to the device is controlled through a Chip
Select (CS) input.
Communication to the device can be paused via the
hold pin (HOLD). While the device is paused,
transitions on its inputs will be ignored, with the
exception of Chip Select, allowing the host to service
higher priority interrupts.
hold pin (HOLD). While the device is paused,
transitions on its inputs will be ignored, with the
exception of Chip Select, allowing the host to service
higher priority interrupts.
Block Diagram
Package Types
Part
Number
V
CC
Range
Max. Clock
Frequency
Temp.
Ranges
25AA320
1.8-5.5V
1 MHz
I
25LC320
2.5-5.5V
2 MHz
I,E
25C320
4.5-5.5V
3 MHz
I,E
- Industrial (I):
-40
°C to +85°C
- Automotive (E):
-40°C to +125°C
SI
SO
SCK
CS
HOLD
WP
STATUS
Register
I/O Control
Memory
Control
Logic
HV Generator
EEPROM
Array
Page
Y Decoder
Sense Amp.
R/W Control
R/W Control
Logic
V
CC
V
SS
Latches
XDEC
TSSOP
PDIP, SOIC
TSSOP
CS
SO
WP
V
SS
V
CC
HOLD
SCK
SI
1
2
3
4
8
7
6
5
25X
X320
HOLD
V
CC
CS
SO
1
2
3
4
8
7
6
5
SCK
SI
V
SS
WP
25XX3
20
NC
CS
SO
NC
WP
V
SS
NC
NC
V
CC
HOLD
NC
SCK
SI
SI
NC
25XX
320
1
2
3
4
2
3
4
14
13
12
11
13
12
11
5
10
9
7
8
6
32K SPI Bus Serial EEPROM
*25XX320 is used in this document as a generic part number for the 25AA320/25LC320/25C320 devices.
Not recommended for new designs –
Please use 25AA320A or 25LC320A.