25LC320A-E/SN Microchip Technology, 25LC320A-E/SN Datasheet

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25LC320A-E/SN

Manufacturer Part Number
25LC320A-E/SN
Description
IC EEPROM 32KBIT 10MHZ 8SOIC
Manufacturer
Microchip Technology
Datasheets

Specifications of 25LC320A-E/SN

Memory Size
32K (4K x 8)
Package / Case
8-SOIC (3.9mm Width)
Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Speed
10MHz
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Organization
4 K x 8
Interface Type
SPI
Maximum Clock Frequency
10 MHz
Access Time
50 ns
Supply Voltage (max)
5.5 V
Supply Voltage (min)
2.5 V
Maximum Operating Current
5 mA
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Operating Supply Voltage
3.3 V, 5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
25LC320A-E/SN
Quantity:
3 000
Device Selection Table
Features
• Max. clock 10 MHz
• Low-power CMOS technology
• 4096 x 8-bit organization
• 32 byte page
• Self-timed ERASE and WRITE cycles (5 ms
• Block write protection
• Built-in write protection
• Sequential read
• High reliability
• Temperature ranges supported;
• Standard and Pb-free packages available
Pin Function Table
 2003 Microchip Technology Inc.
- Max. Write Current: 5 mA at 5.5V, 10 MHz
- Read Current: 5 mA at 5.5V, 10 MHz
- Standby Current: 5 A at 5.5V
max.)
- Protect none, 1/4, 1/2 or all of array
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
- Endurance: 1,000,000 erase/write cycles
- Data retention: > 200 years
- ESD protection: > 4000V
- Industrial (I):
- Automotive (E):
Part Number
HOLD
Name
25AA320A
25LC320A
SCK
V
V
WP
SO
CS
SI
CC
SS
Chip Select Input
Serial Data Output
Write-Protect
Ground
Serial Data Input
Serial Clock Input
Hold Input
Supply Voltage
V
CC
2.5-5.5V
1.8-5.5V
32K SPI
Function
Range
-40 C to +85 C
-40°C to +125°C
25AA320A/25LC320A
Page Size
Bus Serial EEPROM
32 Byte
32 Byte
Preliminary
Description
The Microchip Technology Inc. 25AA320A/25LC320A
(25XX320A
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.
Communication to the device can be paused via the
hold pin (HOLD). While the device is paused, transi-
tions on its inputs will be ignored, with the exception of
Chip Select, allowing the host to service higher priority
interrupts.
The 25XX320A is available in standard packages
including 8-lead PDIP and SOIC, and advanced
packaging including 8-lead MSOP, and 8-lead TSSOP.
Pb-free (Pure Matte Sn) finish is also available.
Package Types (not to scale)
*25XX320A is used in this document as a generic part number
for the 25AA320A, 25LC320A devices.
SPI is a registered trademark of Motorola Corporation.
V
WP
CS
SO
Temp. Ranges
SS
TSSOP/MSOP
1
2
3
4
(ST, MS)
I,E
I
*
) are 32k-bit Serial Electrically Erasable
HOLD
V
X-Rotated TSSOP
CS
SO
CC
8
7
6
5
1
2
3
4
V
HOLD
SCK
SI
CC
(X/ST)
P, SN, ST, MS
P, SN, ST, MS
V
8
7
6
5
WP
SO
CS
SS
Packages
SCK
SI
V
WP
SS
PDIP/SOIC
1
2
3
4
DS21828B-page 1
(P, SN)
8
7
6
5
V
HOLD
SCK
SI
CC

Related parts for 25LC320A-E/SN

25LC320A-E/SN Summary of contents

Page 1

... MSOP, and 8-lead TSSOP. Pb-free (Pure Matte Sn) finish is also available. Package Types (not to scale) TSSOP/MSOP (ST, MS HOLD SPI is a registered trademark of Motorola Corporation. *25XX320A is used in this document as a generic part number for the 25AA320A, 25LC320A devices. Preliminary Packages P, SN, ST SN, ST, MS PDIP/SOIC (P, SN HOLD ...

Page 2

... ELECTRICAL CHARACTERISTICS (†) Absolute Maximum Ratings V .............................................................................................................................................................................6.5V CC All inputs and outputs w.r.t. V ......................................................................................................... -0. Storage temperature .................................................................................................................................-65°C to 150°C Ambient temperature under bias ...............................................................................................................-65°C to 125°C ESD protection on all pins ..........................................................................................................................................4 kV † NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device ...

Page 3

... This parameter is not tested but ensured by characterization. For endurance estimates in a specific application, please consult the Total Endurance™ Model which can be obtained from our web site: www.microchip.com.  2003 Microchip Technology Inc. 25AA320A/25LC320A Industrial (I -40°C to +85°C A Automotive (E -40° ...

Page 4

... TABLE 1-2: AC CHARACTERISTICS (CONTINUED) AC CHARACTERISTICS Param. Sym. Characteristic No HOLD Hold Time HOLD Low to Output HZ High HOLD High to Output HV Valid 20 T Internal Write Cycle Time WC 21 — Endurance Note 1: This parameter is periodically sampled and not 100% tested begins on the rising edge of CS after a valid write sequence and ends when the internal write cycle is WC complete ...

Page 5

... SI HOLD FIGURE 1-2: SERIAL INPUT TIMING CS 2 Mode 1,1 SCK Mode 0 MSB in SO FIGURE 1-3: SERIAL OUTPUT TIMING SCK 13 MSB out SO SI  2003 Microchip Technology Inc. 25AA320A/25LC320A high-impedance n don’t care high-impedance 14 don’t care Preliminary LSB in ...

Page 6

... FUNCTIONAL DESCRIPTION 2.1 Principles of Operation The 25XX320A is a 4096 byte Serial EEPROM designed to interface directly with the Serial Peripheral Interface (SPI) port of many of today’s popular microcontroller families, including PIC16C6X/7X microcontrollers. It may also interface with microcontrollers that do not have a built-in SPI port by using discrete I/O lines programmed properly in firmware to match the SPI protocol ...

Page 7

... SI high-impedance SO  2003 Microchip Technology Inc. 25AA320A/25LC320A HV Generator EEPROM Array Page Latches Y Decoder Sense Amp. R/W Control Read data from memory array beginning at selected address Write data to memory array beginning at selected address Reset the write enable latch (disable write operations) Set the write enable latch (enable write operations) ...

Page 8

... FIGURE 2-2: BYTE WRITE SEQUENCE SCK instruction high-impedance SO FIGURE 2-3: PAGE WRITE SEQUENCE SCK instruction SCK data byte DS21828B-page 16-bit address 16-bit address data byte Preliminary Twc data byte data byte data byte n (32 max  2003 Microchip Technology Inc. ...

Page 9

... FIGURE 2-5: WRITE DISABLE SEQUENCE (WRDI) CS SCK SI SO  2003 Microchip Technology Inc. 25AA320A/25LC320A The following is a list of conditions under which the write enable latch will be reset: • Power-up See • WRDI instruction successfully executed • WRSR instruction successfully executed • WRITE instruction successfully executed ...

Page 10

... Read Status Register Instruction (RDSR) 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: TABLE 2-2: STATUS REGISTER W/R – – ...

Page 11

... See Table 2-4 for a matrix of functionality on the WPEN bit. FIGURE 2-7: WRITE STATUS REGISTER TIMING SEQUENCE (WRSR SCK instruction Note: An internal write cycle (T WC  2003 Microchip Technology Inc. 25AA320A/25LC320A See Figure 2-7 for the WRSR timing sequence. TABLE 2-3: BP1 data to Status Register ...

Page 12

... Data Protection 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 the write enable latch • After a byte write, page write or Status Register write, the write enable latch is reset • ...

Page 13

... WP pin grounded and still be able to write to the Status Register. The WP pin functions will be enabled when the WPEN bit is set high.  2003 Microchip Technology Inc. 25AA320A/25LC320A 3.4 Serial Input (SI) The SI pin is used to transfer data into the device. It receives instructions, addresses and data. Data is latched on the rising edge of the serial clock ...

Page 14

... Example: 25LC320A I/P 1L7 0328 Example: 25LC320A I/SN 0328 1L7 TSSOP 1st Line Marking Codes Device 25AA320A 25AA320X 25LC320A Example: 25LC320X 5LBA I328 1L7 Preliminary  2003 Microchip Technology Inc. Pb-free std mark mark 5ABA G5ABA 5LBA G5LBA ...

Page 15

... Mold Draft Angle Top Mold Draft Angle Bottom *Controlling Parameter Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010" (0.254mm) per side. JEDEC Equivalent: MO-187 Drawing No. C04-111  2003 Microchip Technology Inc. 25AA320A/25LC320A φ Units ...

Page 16

... Plastic Dual In-line (P) – 300 mil (PDIP Dimension Limits Number of Pins Pitch Top to Seating Plane Molded Package Thickness Base to Seating Plane Shoulder to Shoulder Width Molded Package Width Overall Length Tip to Seating Plane Lead Thickness Upper Lead Width Lower Lead Width ...

Page 17

... Mold Draft Angle Bottom * Controlling Parameter § Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010” (0.254mm) per side. JEDEC Equivalent: MS-012 Drawing No. C04-057  2003 Microchip Technology Inc. 25AA320A/25LC320A Units ...

Page 18

... Plastic Thin Shrink Small Outline (ST) – 4.4 mm (TSSOP Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Molded Package Length Foot Length Foot Angle Lead Thickness Lead Width Mold Draft Angle Top ...

Page 19

... APPENDIX A: REVISION HISTORY Revision B Corrections to Section 1.0, Electrical Characteristics.  2003 Microchip Technology Inc. 25AA320A/25LC320A Preliminary DS21828B-page 19 ...

Page 20

... NOTES: DS21828B-page 20 Preliminary  2003 Microchip Technology Inc. ...

Page 21

... Conferences for products, Development Systems, technical information and more • Listing of seminars and events  2003 Microchip Technology Inc. 25AA320A/25LC320A SYSTEMS INFORMATION AND UPGRADE HOT LINE The Systems Information and Upgrade Line provides system users a listing of the latest versions of all of Microchip's development systems software products ...

Page 22

... Telephone: (_______) _________ - _________ Application (optional): Would you like a reply? Y Device: 25AA320A/25LC320A Questions: 1. What are the best features of this document? 2. How does this document meet your hardware and software development needs you find the organization of this document easy to follow? If not, why? 4 ...

Page 23

... Serial EEPROM, Industrial temp., MSOP package, Pb-free 25LC320AT-E/SN = 32k-bit, 32-byte page, 2.5V Serial EEPROM, Extended temp., Tape & Reel, SOIC package 25LC320AT-I/ST = 32k-bit, 32-byte page, 2.5V Serial EEPROM, Industrial temp., Tape & Reel, TSSOP package 25LC320AX-I/ST = 32k-bit, 32-byte page, 2.5V Serial EEPROM, Industrial temp., rotated pinout, TSSOP package ...

Page 24

... NOTES: DS21828B-page 24 Preliminary  2003 Microchip Technology Inc. ...

Page 25

... Serialized Quick Turn Programming (SQTP service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2003, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system ...

Page 26

... Via Quasimodo, 12 20025 Legnano (MI) Milan, Italy Tel: 39-0331-742611 Fax: 39-0331-466781 Netherlands Biesbosch 14 NL-5152 SC Drunen, Netherlands Tel: 31-416-690399 Fax: 31-416-690340 United Kingdom 505 Eskdale Road Winnersh Triangle Wokingham Berkshire, England RG41 5TU Tel: 44-118-921-5869 Fax: 44-118-921-5820 07/28/03  2003 Microchip Technology Inc. ...

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