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25C320XI/ST14 Datasheet

  • 25C320XI/ST14

  • 32K SPI Bus Serial EEPROM

  • 24頁

  • MICROCHIP   MICROCHIP

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25AA320/25LC320/25C320
32K SPI
鈩?/div>
Bus Serial EEPROM
Device Selection Table
Part
Number
25AA320
25LC320
25C320
V
CC
Range
1.8-5.5V
2.5-5.5V
4.5-5.5V
Max. Clock
Frequency
1 MHz
2 MHz
3 MHz
Temp.
Ranges
I
I,E
I,E
Description:
The Microchip Technology Inc. 25AA320/25LC320/
25C320 (25XX320
*
) are 32 Kbit serial Electrically
Erasable PROMs. The memory is accessed via a
simple Serial Peripheral Interface (SPI鈩? 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.
Features:
鈥?Low-power CMOS technology:
- Write current: 3 mA maximum
- Read current: 500
碌A(chǔ)
typical
- Standby current: 500 nA typical
鈥?4096 x 8 bit organization
鈥?32 byte page
鈥?Write cycle time: 5 ms maximum
鈥?Self-timed erase and write cycles
鈥?Block write protection:
- Protect none, 1/4, 1/2 or all of array
鈥?Built-in write protection:
- Power on/off data protection circuitry
- Write enable latch
- Write-protect pin
鈥?Sequential read
鈥?High reliability:
- Endurance: 1M E/W cycles
- Data retention: > 200 years
- ESD protection: > 4000V
鈥?8-pin PDIP, SOIC and TSSOP packages
鈥?14-lead TSSOP package
鈥?Temperature ranges supported:
- Industrial (I):
-40擄C to +85擄C
- Automotive (E):
-40擄C to +125擄C
Block Diagram
Status
Register
HV Generator
I/O Control
Logic
Memory
Control
Logic
EEPROM
Array
XDEC
Page
Latches
SI
SO
CS
SCK
HOLD
WP
V
CC
V
SS
Sense Amp.
R/W Control
Y Decoder
Package Types
PDIP, SOIC
CS
SO
WP
V
SS
1
8
V
CC
HOLD
SCK
SI
HOLD
V
CC
CS
SO
1
TSSOP
8
SCK
SI
V
SS
WP
CS
SO
NC
NC
NC
WP
V
SS
1
2
3
4
5
6
7
TSSOP
14
13
12
11
10
9
8
V
CC
HOLD
NC
NC
NC
SCK
SI
25XX320
25XX320
25XX320
2
3
4
7
6
5
2
3
4
7
6
5
*25XX320 is used in this document as a generic part number for the 25AA320/25LC320/25C320 devices.
錚?/div>
2004 Microchip Technology Inc.
DS21227E-page 1

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