25LC020A-I/MS Microchip Technology, 25LC020A-I/MS Datasheet

IC EEPROM 2KBIT 10MHZ 8MSOP

25LC020A-I/MS

Manufacturer Part Number
25LC020A-I/MS
Description
IC EEPROM 2KBIT 10MHZ 8MSOP
Manufacturer
Microchip Technology
Datasheet

Specifications of 25LC020A-I/MS

Format - Memory
EEPROMs - Serial
Memory Type
EEPROM
Memory Size
2K (256 x 8)
Speed
10MHz
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Device Selection Table
Features:
• 10 MHz max. Clock Frequency
• Low-Power CMOS Technology:
• 256 x 8-bit Organization
• Write Page mode (up to 16 bytes)
• Sequential Read
• Self-Timed Erase and Write Cycles (5 ms max.)
• Block Write Protection:
• Built-in Write Protection:
• High Reliability:
• Temperature Ranges Supported:
• Pb-Free and RoHS Compliant
Pin Function Table
© 2007 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 μA at 5.5V
- 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):
HOLD
Name
Part Number
SCK
V
V
WP
CS
SO
25AA020A
25LC020A
SI
SS
CC
Chip Select Input
Serial Data Output
Write-Protect
Ground
Serial Data Input
Serial Clock Input
Hold Input
Supply Voltage
V
Function
2K SPI Bus Serial EEPROM
CC
1.8-5.5V
2.5-5.5V
Range
-40°C to +85°C
-40°C to +125°C
25AA020A/25LC020A
Preliminary
Page Size
16 Bytes
16 Bytes
Description:
The Microchip Technology Inc. 25XX020A* is a 2 Kbit
Serial Electrically Erasable Programmable Read-Only
Memory (EEPROM). 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 25XX020A is available in standard packages
including 8-lead PDIP and SOIC, and advanced
packages including 8-lead MSOP, 8-lead TSSOP and
rotated TSSOP, 8-lead 2x3 DFN, and 6-lead SOT-23.
Package Types (not to scale)
*25XX020A is used in this document as a generic part number for the
25AA020A and the 25LC020A.
SCK
V
WP
V
SO
CS
SS
SS
SI
Temp. Ranges
TSSOP/MSOP
SOT-23
1
2
3
1
2
3
4
(OT)
(ST, MS)
I, E
I
6
5
4
HOLD
V
X-Rotated TSSOP
CS
SO
V
CC
CS
SO
DD
8
7
6
5
1
2
3
4
V
HOLD
SCK
SI
CC
(X/ST)
P, MS, SN, ST, MC, OT
P, MS, SN, ST, MC, OT
V
WP
8
7
6
5
V
CS
SO
WP
SO
CS
SS
SS
Packages
PDIP/SOIC
SCK
SI
V
WP
SS
1
2
3
4
1
2
3
4
DS21833D-page 1
DFN
(P, SN)
(MC)
8
7
6
5
8
7
6
5
V
HOLD
SCK
SI
V
HOLD
SCK
SI
CC
CC

Related parts for 25LC020A-I/MS

25LC020A-I/MS Summary of contents

Page 1

... TSSOP, 8-lead 2x3 DFN, and 6-lead SOT-23. Package Types (not to scale) TSSOP/MSOP (ST, MS SOT-23 (OT SCK HOLD *25XX020A is used in this document as a generic part number for the 25AA020A and the 25LC020A. Preliminary Packages P, MS, SN, ST, MC MS, SN, ST, MC, OT PDIP/SOIC (P, SN HOLD 7 HOLD 6 SCK SCK ...

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 ...............................................................................................................-40°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

... Total Endurance™ Model which can be obtained from Microchip’s web site at www.Microchip.com begins on the rising edge of CS after a valid write sequence and ends when the internal write cycle WC is complete. © 2007 Microchip Technology Inc. 25AA020A/25LC020A 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 (byte or page) 21 — Endurance Note 1: This parameter is periodically sampled and not 100% tested. 2: This parameter is not tested but ensured by characterization. For endurance estimates in a specific application, please consult the Total Endurance™ ...

Page 5

... SI HOLD FIGURE 1-2: SERIAL INPUT TIMING CS 2 Mode 1,1 Mode 0,0 SCK MSB in SO FIGURE 1-3: SERIAL OUTPUT TIMING SCK 13 MSB out SO SI © 2007 Microchip Technology Inc. 25AA020A/25LC020A High-Impedance n Don’t Care High-Impedance 14 Don’t Care Preliminary LSB in 3 Mode 1,1 ...

Page 6

... FUNCTIONAL DESCRIPTION 2.1 Principles of Operation The 25XX020A is a 256-byte Serial EEPROM designed to interface directly with the Serial Peripheral Interface (SPI) port of many of today’s popular microcontroller families, including Microchip’s PIC microcontrollers. It may also interface with microcon- trollers that do not have a built-in SPI port by using discrete I/O lines programmed properly in software to match the SPI protocol ...

Page 7

... SI High-Impedance SO © 2007 Microchip Technology Inc. 25AA020A/25LC020A 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 FIGURE 2-3: PAGE WRITE SEQUENCE SCK Instruction SCK Data Byte DS21833D-page Address Byte High-Impedance Address Byte Data Byte Preliminary Twc Data Byte Data Byte Data Byte n (16 max © 2007 Microchip Technology Inc. ...

Page 9

... FIGURE 2-5: WRITE DISABLE SEQUENCE (WRDI) CS SCK SI SO © 2007 Microchip Technology Inc. 25AA020A/25LC020A 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. See Figure 2-6 for the RDSR timing sequence. The STATUS register may be read at any time, even during a write cycle. The STATUS register is formatted as follows: ...

Page 11

... Table 2-3. FIGURE 2-7: WRITE STATUS REGISTER TIMING SEQUENCE (WRSR SCK Instruction Note: An internal write cycle (T WC sequence. © 2007 Microchip Technology Inc. 25AA020A/25LC020A 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

... 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. © 2007 Microchip Technology Inc. 25AA020A/25LC020A 3.5 Serial Clock (SCK) The SCK is used to synchronize the communication between a master and the 25XX020A. Instructions, ...

Page 14

... TYWW NNN 8-Lead MSOP (150 mil) XXXXXT YWWNNN Part Number TSSOP Standard 5A2A 25AA020A 25LC020A 5L2A Note Temperature grade (I, E) Legend: XX...X Customer-specific information Y Year code (last digit of calendar year) YY Year code (last 2 digits of calendar year) WW Week code (week of January 1 is week ‘01’) ...

Page 15

... Package Marking Information (continued) 8-Lead 2X3 DFN XXX YWW NN 6-Lead SOT-23 XXNN © 2007 Microchip Technology Inc. 25AA020A/25LC020A Example: 411 627 L7 Example: 22L7 Preliminary DS21833D-page 15 ...

Page 16

... N NOTE DS21833D-page Preliminary c © 2007 Microchip Technology Inc. ...

Page 17

... N NOTE © 2007 Microchip Technology Inc. 25AA020A/25LC020A φ Preliminary α c β DS21833D-page 17 ...

Page 18

... DS21833D-page 18 Preliminary © 2007 Microchip Technology Inc. ...

Page 19

... D N NOTE © 2007 Microchip Technology Inc. 25AA020A/25LC020A Preliminary φ L DS21833D-page 19 ...

Page 20

... D N NOTE DS21833D-page Preliminary φ L © 2007 Microchip Technology Inc. ...

Page 21

... D N NOTE TOP VIEW A3 © 2007 Microchip Technology Inc. 25AA020A/25LC020A EXPOSED PAD BOTTOM VIEW A NOTE 2 A1 Preliminary NOTE DS21833D-page 21 ...

Page 22

... N PIN LASER MARK DS21833D-page Preliminary φ © 2007 Microchip Technology Inc. ...

Page 23

... REVISION HISTORY Revision B Corrections to Section 1.0, Electrical Characteristics. Revision C Added Packages SOT-23, DFN and X-rotated TSSOP; Revised AC Char., Params. 9, 10; Revised Package Legend. Revision D Revised Features (Pb-free); Replaced Package Drawings; Revised Product ID System. © 2007 Microchip Technology Inc. 25AA020A/25LC020A Preliminary DS21833D-page 23 ...

Page 24

... NOTES: DS21833D-page 24 Preliminary © 2007 Microchip Technology Inc. ...

Page 25

... To register, access the Microchip web site at www.microchip.com, click on Customer Change Notification and follow the registration instructions. © 2007 Microchip Technology Inc. 25AA020A/25LC020A CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • Distributor or Representative • ...

Page 26

... Telephone: (_______) _________ - _________ Application (optional): Would you like a reply? Y Device: 25AA020A/25LC020A 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 27

... Serial EEPROM, Industrial temp., Tape & Reel, SOIC package d) 25LC020AT-I/ST = 2k-bit, 16-byte page, 2.5V Serial EEPROM, Industrial temp., Tape & Reel, TSSOP package e) 25LC020AT-E/SN = 2k-bit, 16-byte page, 2.5V serial EEPROM, Extended temp., Tape & Reel, SOIC Package Preliminary . DS21833D-page 27 ...

Page 28

... NOTES: DS21833D-page 28 Preliminary © 2007 Microchip Technology Inc. ...

Page 29

... PowerInfo, PowerMate, PowerTool, REAL ICE, rfLAB, Select Mode, Smart Serial, SmartTel, Total Endurance, UNI/O, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. ...

Page 30

... Taiwan - Kaohsiung Tel: 886-7-536-4818 Fax: 886-7-536-4803 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350 Preliminary © 2007 Microchip Technology Inc. EUROPE Austria - Wels Tel: 43-7242-2244-39 Fax: 43-7242-2244-393 Denmark - Copenhagen Tel: 45-4450-2828 Fax: 45-4485-2829 France - Paris Tel: 33-1-69-53-63-20 ...

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