25lc1024 Microchip Technology Inc., 25lc1024 Datasheet

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25lc1024

Manufacturer Part Number
25lc1024
Description
1 Mbit Spi Bus Serial Eeprom
Manufacturer
Microchip Technology Inc.
Datasheet

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Device Selection Table
Features:
• 20 MHz max. Clock Speed
• Byte and Page-level Write Operations:
• Low-Power CMOS Technology:
• Electronic Signature for Device ID
• Self-Timed Erase and Write Cycles:
• Sector Write Protection (32K byte/sector):
• Built-In Write Protection:
• High Reliability:
• Temperature Ranges Supported:
• Pb-free and RoHS Compliant
Pin Function Table
© 2007 Microchip Technology Inc.
CS
SO
WP
V
SI
SCK
HOLD
V
- 256 byte page
- 6 ms max. write cycle time
- No page or sector erase required
- Max. Write current: 5 mA at 5.5V, 20 MHz
- Read current: 7 mA at 5.5V, 20 MHz
- Standby current: 1μA at 2.5V
- Page Erase (6 ms max.)
- Sector Erase (10 ms max.)
- Chip Erase (10 ms max.)
- Protect none, 1/4, 1/2 or all of array
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
- Endurance: 1M erase/write cycles
- Data Retention: >200 years
- ESD Protection: 4000V
- Industrial (I): -40°C to +85°C
SS
CC
Part Number
(Deep power-down)
25AA1024
Name
Chip Select Input
Write-Protect
Ground
Serial Clock Input
Hold Input
Supply Voltage
Serial Data Output
Serial Data Input
V
1 Mbit SPI Bus Serial EEPROM
CC
1.8-5.5V
Range
Function
Page Size
256 Byte
Preliminary
Description:
The Microchip Technology Inc. 25AA1024 is a 1024
Kbit serial EEPROM memory with byte-level and page-
level serial EEPROM functions. It also features Page,
Sector and Chip erase functions typically associated
with Flash-based products. These functions are not
required for byte or page write operations. 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
by 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 25AA1024 is available in standard packages
including 8-lead PDIP and SOIJ, and advanced 8-lead
DFN package. All devices are Pb-free.
Package Types (not to scale)
V
WP
SO
CS
SS
Temp. Ranges
1
2
3
4
I
DFN
(MF)
25AA1024
8
7
6
5
V
HOLD
SCK
SI
CC
V
WP
SO
CS
SS
Packages
P, SM, MF
PDIP/SOIJ
1
2
3
4
(P, SM)
DS21836E-page 1
8
7
6
5
V
HOLD
SCK
SI
CC

Related parts for 25lc1024

25lc1024 Summary of contents

Page 1

... Temp. Ranges 256 Byte I Description: The Microchip Technology Inc. 25AA1024 is a 1024 Kbit serial EEPROM memory with byte-level and page- level serial EEPROM functions. It also features Page, Sector and Chip erase functions typically associated with Flash-based products. These functions are not required for byte or page write operations ...

Page 2

... V = 1. 2.0V to 5.5V CC Test Conditions ≥ 2.7V < 2. 1.0 mA, V < 2. -400 μ OUT 5.0V (Note) = 5.5V 20.0 MHz; CLK = 2.5V 10.0 MHz; CLK = 5.5V = 2.5V = 5.5V, Inputs tied 85°C = 2.5V, Inputs tied 85°C © 2007 Microchip Technology Inc. ...

Page 3

... This parameter is not tested but established by characterization and qualification. For endurance estimates in a specific application, please consult the Total Endurance™ Model which can be obtained from Microchip’s web site at www.microchip.com. 3: Includes T time. HI © 2007 Microchip Technology Inc. Industrial (I)*: T = 0°C to +85°C A Industrial (I -40° ...

Page 4

... CC ≤ 5.5 CC < 5.5 CC <2.5 at 0°C to +85°C CC <2.5 at -40°C to +85°C CC ≤ 5.5 CC < 4.5 CC <2.5 at 0°C to +85°C CC <2.5 at -40°C to +85°C CC ≤ 5.5 CC < 4.5 CC <2.5 at 0°C to +85°C CC <2.5 at -40°C to +85° 1.8V to 5.5V = 1.8V to 5.5V = 1.8V to 5.5V = 1.8V to 5.5V © 2007 Microchip Technology Inc. ...

Page 5

... HOLD TIMING CS 16 SCK HOLD FIGURE 1-2: SERIAL INPUT TIMING CS 2 Mode 1,1 Mode 0,0 SCK MSB in SO © 2007 Microchip Technology Inc. — (Note 1) (Note 2) — High-Impedance n Don’t Care High-Impedance Preliminary 25AA1024 17 ...

Page 6

... FIGURE 1-3: SERIAL OUTPUT TIMING SCK 13 MSB out SO SI DS21836E-page 6 14 Don’t Care Preliminary 3 Mode 1,1 Mode 0,0 15 LSB out © 2007 Microchip Technology Inc. ...

Page 7

... WRDI 0000 0100 RDSR 0000 0101 WRSR 0000 0001 PE 0100 0010 SE 1101 1000 CE 1100 0111 RDID 1010 1011 DPD 1011 1001 © 2007 Microchip Technology Inc. BLOCK DIAGRAM STATUS Register ® Memory I/O Control Control Logic Logic SCK HOLD WP V ...

Page 8

... The read operation is terminated by raising the CS pin (Figure 2-1 24-bit Address Preliminary Data Out © 2007 Microchip Technology Inc. ...

Page 9

... SI High-Impedance SO © 2007 Microchip Technology Inc. the data in the rest of the page is refreshed along with the data bytes being written. For this reason, endurance is specified per page. Note: Page write operations are limited to writing bytes within a single physical page, regardless of the number of bytes actually being written ...

Page 10

... Address Data Byte Preliminary Data Byte Data Byte n (256 max © 2007 Microchip Technology Inc. ...

Page 11

... FIGURE 2-5: WRITE DISABLE SEQUENCE (WRDI) CS SCK SI SO © 2007 Microchip Technology Inc. The following is a list of conditions under which the write enable latch will be reset: • Power-up • WRDI instruction successfully executed • WRSR instruction successfully executed • WRITE instruction successfully executed • ...

Page 12

... WRSR instruction. These R R bits are nonvolatile and are shown in Table 2-3. WEL WIP See Figure 2-6 for the RDSR timing sequence. 0 ’, no write Data from STATUS register Preliminary © 2007 Microchip Technology Inc. ...

Page 13

... SI SO © 2007 Microchip Technology Inc. The Write-Protect Enable (WPEN) bit is a nonvolatile bit that is available as an enable bit for the WP pin. The Write-Protect (WP) pin and the Write-Protect Enable (WPEN) bit in the STATUS register control the programmable hardware write-protect feature. Hard- ware write protection is enabled when WP pin is low and the WPEN bit is high ...

Page 14

... The write enable latch is reset • high-impedance state • A high-to-low-level transition required to enter active state Protected Blocks Unprotected Blocks Protected x Protected x Protected Protected Preliminary STATUS Register Protected Protected Writable Writable Writable Protected Writable Writable © 2007 Microchip Technology Inc. ...

Page 15

... SO © 2007 Microchip Technology Inc. CS must then be driven high after the last bit if the address or the Page Erase will not execute. Once the CS is driven high, the self-timed Page Erase cycle is started. The WIP bit in the STATUS register can be read to determine when the Page Erase cycle is complete ...

Page 16

... Block Protect bits (BP0, BP1) then the sequence will be aborted and no erase will occur. See Table 2-3 for Sector Addressing 24-bit Address High-Impedance Preliminary © 2007 Microchip Technology Inc. ...

Page 17

... CHIP ERASE SEQUENCE CS SCK SI SO © 2007 Microchip Technology Inc. The CS pin must be driven high after the eighth bit of the instruction code has been given or the Chip Erase function will not be executed. Once the CS pin is driven high, the self-timed Chip Erase function begins. ...

Page 18

... SO pin, and then returns the device to Standby mode after delay (T Deep Power-Down mode automatically releases at device power-down. Once power is restored to the device, it will power-up in the Standby mode High-Impedance Preliminary ) REL 7 1 © 2007 Microchip Technology Inc. ...

Page 19

... SO © 2007 Microchip Technology Inc. Release from Deep Power-Down mode and Read Electronic Signature is entered by driving CS low, followed by the RDID instruction code (Figure 2-12) and then a dummy address of 24 bits (A23-A0). After the last bit of the dummy address is clocked in, the 8-bit Electronic signature is clocked out on the SO pin ...

Page 20

... To resume serial communication, HOLD must be brought high while the SCK pin is low, otherwise serial communication will not resume. Pulling the HOLD line low at any time will tri-state the SO line. Preliminary © 2007 Microchip Technology Inc. ...

Page 21

... Standard marking consists of Microchip part number, year code, week code, traceability code (facility code, mask rev#, and assembly code). For marking beyond this, certain price adders apply. Please check with your Microchip Sales Office. © 2007 Microchip Technology Inc. : Example 5AA1024 ...

Page 22

... NOTE TOP VIEW φ DS21836E-page EXPOSED PAD BOTTOM VIEW A2 A3 NOTE 2 I Preliminary NOTE 1 © 2007 Microchip Technology Inc. ...

Page 23

... N NOTE © 2007 Microchip Technology Inc Preliminary 25AA1024 c DS21836E-page 23 ...

Page 24

... α DS21836E-page β Preliminary φ L © 2007 Microchip Technology Inc. ...

Page 25

... Revised Features; Revised Tables 1-1 and 1-2 (added Industrial temp. and revised parameters 22-23); Replaced Package Drawings (Rev. AP); Revised Product ID System; Changed Flash to EEPROM. Revision E (10/2007) Removed 25LC1024 part number; New data sheet created for 25LC1024 (DS22064); Revised Tables; Updates throughout. © 2007 Microchip Technology Inc. Preliminary ...

Page 26

... NOTES: DS21836E-page 26 Preliminary © 2007 Microchip Technology Inc. ...

Page 27

... 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. CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • Distributor or Representative • ...

Page 28

... What deletions from the document could be made without affecting the overall usefulness there any incorrect or misleading information (what and where)? 7. How would you improve this document? DS21836E-page 28 Total Pages Sent ________ FAX: (______) _________ - _________ N Literature Number: DS21836E Preliminary © 2007 Microchip Technology Inc. ...

Page 29

... Range: Package Micro Lead Frame ( body), 8-lead P = Plastic DIP (300 mil body), 8-lead SM = Plastic SOIJ (5.28 mm), 8-lead © 2007 Microchip Technology Inc. X /XX Examples: Package a) b) Preliminary 25AA1024 . 25AA1024T-I/ Mbit, 1.8V Serial EEPROM, Industrial temp., Tape & Reel, SOIJ package 25AA1024T-I/ Mbit, 1 ...

Page 30

... NOTES: DS21836E-page 30 Preliminary © 2007 Microchip Technology Inc. ...

Page 31

... Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights. © 2007 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, K ...

Page 32

... 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 ...

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