24lc32aft

Manufacturer Part Number24lc32aft
Description32k I 2 C? Serial Eeprom With Quarter-array Write-protect
ManufacturerMicrochip Technology Inc.
24lc32aft datasheet
 
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24AA32AF/24LC32AF
2
32K I
C
Serial EEPROM with Quarter-Array Write-Protect
Device Selection Table
Part
V
Max. Clock
CC
Number
Range
Frequency
24AA32AF
1.7-5.5
400 kHz
24LC32AF
2.5-5.5
400 kHz
Note 1:
100 kHz for V
<2.5V.
CC
Features:
• Single Supply with Operation down to 1.7V for
24AA32AF devices, 2.5V for 24LC32AF devices
• Low-Power CMOS Technology:
- Read current 400 μA, max.
- Standby current 1 μA, max. (I-temp)
2
• 2-Wire Serial Interface, I
C™ Compatible
• Packages with 3 Address Pins are Cascadable up
to Eight Devices
• Schmitt Trigger Inputs for Noise Suppression
• Output Slope Control to Eliminate Ground Bounce
• 100 kHz and 400 kHz Clock Compatibility
• Page Write Time 5 ms max.
• Self-Timed Erase/Write Cycle
• 32-Byte Page Write Buffer
• Hardware Write-Protect for 1/4 Array
(C00h-FFFh)
• ESD Protection > 4,000V
• More than 1 Million Erase/Write Cycles
• Data Retention > 200 Years
• Factory Programming Available
• Packages Include 8-lead PDIP, SOIC, TSSOP,
MSOP, TDFN and 5-lead SOT-23
• Pb-Free and RoHS Compliant
• Temperature Ranges:
- Industrial (I):
-40°C to +85°C
- Automotive (E): -40°C to +125°C
Package Types
PDIP, MSOP, SOIC, TSSOP
A0
1
8
V
CC
A1
2
7
WP
A2
3
6
SCL
V
4
5
SDA
SS
*24XX32AF is used in this document as a generic part number for the 24AA32AF/24LC32AF devices.
© 2009 Microchip Technology Inc.
Description:
Temp.
The Microchip Technology Inc. 24AA32AF/24LC32AF
Ranges
(24XX32AF*) is a 32 Kbit Electrically Erasable PROM.
The device is organized as a single block of 4K x 8-bit
(1)
I
memory with a 2-wire serial interface. Low-voltage
I, E
design permits operation down to 1.7V, with standby
and read currents of only 1 μA and 400 μA,
respectively. It has been developed for advanced, low-
power applications such as personal communications
or data acquisition. The 24XX32AF also has a page
write capability for up to 32 bytes of data. Functional
address lines allow up to eight devices on the same
bus, for up to 256 Kbits address space. The 24XX32AF
is available in the standard 8-pin PDIP, surface mount
SOIC, TSSOP, TDFN and MSOP packages. The
24XX32AF is also available in the 5-lead SOT-23
package.
Block Diagram
I/O
Control
Logic
I/O
SCL
SDA
Vcc
V
SS
SOT-23
SCL
WP
1
5
V
SS
2
V
3
4
SDA
CC
A0 A1
A2
WP
HV Generator
Memory
EEPROM
XDEC
Control
Array
Logic
Page Latches
YDEC
Sense Amp.
R/W Control
TDFN
A0
1
V
8
CC
WP
7
A1
2
SCL
6
A2
3
V
4
5
SS
SDA
DS22184A-page 1

24lc32aft Summary of contents

  • Page 1

    ... SDA SS *24XX32AF is used in this document as a generic part number for the 24AA32AF/24LC32AF devices. © 2009 Microchip Technology Inc. Description: Temp. The Microchip Technology Inc. 24AA32AF/24LC32AF Ranges (24XX32AF Kbit Electrically Erasable PROM. The device is organized as a single block 8-bit (1) I memory with a 2-wire serial interface. Low-voltage I, E design permits operation down to 1 ...

  • Page 2

    ... CC V < 2.5V CC ≥ 2.5V (Note 3 2.1 mA, Vcc = 2. OUT 5.0V (Note 25° MHz A CLK V = 5.5V, SCL = 400 kHz CC Industrial Automotive SDA = SCL = V = 5.5V CC A0, A1, A2 © 2009 Microchip Technology Inc. ...

  • Page 3

    ... This eliminates the need for 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 Microchip’s web site at www.microchip.com. © 2009 Microchip Technology Inc. 24AA32AF/24LC32AF Electrical Characteristics: Industrial (I ...

  • Page 4

    ... FIGURE 1-1: BUS TIMING DATA 5 SCL 7 3 SDA SDA OUT WP DS22184A-page (protected) 11 (unprotected © 2009 Microchip Technology Inc. ...

  • Page 5

    ... CC 400 kHz) For normal data transfer, SDA is allowed to change only during SCL low. Changes during SCL high are reserved for indicating Start and Stop conditions. © 2009 Microchip Technology Inc. 24AA32AF/24LC32AF TSSOP TDFN MSOP SOT-23 ...

  • Page 6

    ... In this case, the slave (24XX32AF) will leave the data line high to enable the master to generate the Stop condition. (D) (D) Address or Data Acknowledge Allowed Valid to Change bits if an internal (C) (A) Stop Condition © 2009 Microchip Technology Inc. ...

  • Page 7

    ... Control Chip Code Select Bits © 2009 Microchip Technology Inc. 24AA32AF/24LC32AF an Acknowledge signal on the SDA line. Depending on the state of the R/W bit, the 24XX32AF will select a read or write operation. FIGURE 5-1: Control Code Start Bit 5.1 Contiguous Addressing Across ...

  • Page 8

    ... V V the write protection is disabled. The WP pin is SS sampled at the Stop bit for every Write command (Figure 4-1). Toggling the WP pin after the Stop bit will have no effect on the execution of the write cycle. © 2009 Microchip Technology Inc tied to CC ...

  • Page 9

    ... Bus Activity A Byte Master SDA Line Bus Activity “don’t care” bit © 2009 Microchip Technology Inc. 24AA32AF/24LC32AF Address Address Byte High Byte Low Byte ...

  • Page 10

    ... Read or Write command. See Figure 7-1 for flow diagram of this operation. DS22184A-page 10 FIGURE 7-1: ACKNOWLEDGE POLLING FLOW Send Write Command Send Stop Condition to Initiate Write Cycle Send Start Send Control Byte with R Did Device No Acknowledge (ACK = 0)? Yes Next Operation © 2009 Microchip Technology Inc. ...

  • Page 11

    ... A Master R T SDA Line S Bus Activity © 2009 Microchip Technology Inc. 24AA32AF/24LC32AF 8.3 Sequential Read Sequential reads are initiated in the same way as a random read, except that once the 24XX32AF trans- mits the first data byte, the master issues an acknowl- edge as opposed to the Stop condition used in a random read ...

  • Page 12

    ... Data n Data Data Control Data T Byte Byte Data © 2009 Microchip Technology Inc. ...

  • Page 13

    ... YYWW 8-Lead SOIC (3.90 mm) XXXXXXXT XXXXYYWW NNN 8-Lead TSSOP XXXX TYWW NNN 8-Lead MSOP XXXXXT YWWNNN 8-Lead 2x3 TDFN XXX YWW NN 5-Lead SOT-23 XXNN © 2009 Microchip Technology Inc. 24AA32AF/24LC32AF Example: 24LC32AF e I/P 13F 3 0527 Example: 4LC32AFI 0527 13F Example: 4LAF I527 ...

  • Page 14

    ... OTP marking consists of Microchip part number, year code, week code, and traceability code. DS22184A-page 14 1st Line Marking Codes MSOP TDFN I Temp. E Temp. 4A32FT AH1 — 4L32FT AH4 AH5 SOT-23 I Temp. E Temp. 6PNN — 6QNN 6RNN © 2009 Microchip Technology Inc. ...

  • Page 15

    ... Microchip Technology Inc. 24AA32AF/24LC32AF DS22184A-page 15 ...

  • Page 16

    ... DS22184A-page 16 α φ β © 2009 Microchip Technology Inc. ...

  • Page 17

    ... Microchip Technology Inc. 24AA32AF/24LC32AF DS22184A-page 17 ...

  • Page 18

    ... DS22184A-page 18 φ I © 2009 Microchip Technology Inc. ...

  • Page 19

    ... Microchip Technology Inc. 24AA32AF/24LC32AF DS22184A-page 19 ...

  • Page 20

    ... DS22184A-page 20 © 2009 Microchip Technology Inc. ...

  • Page 21

    ... Microchip Technology Inc. 24AA32AF/24LC32AF I φ DS22184A-page 21 ...

  • Page 22

    ... DS22184A-page 22 I © 2009 Microchip Technology Inc. φ ...

  • Page 23

    ... APPENDIX A: REVISION HISTORY Revision A (05/09) Original Release. © 2009 Microchip Technology Inc. 24AA32AF/24LC32AF DS22184A-page 23 ...

  • Page 24

    ... NOTES: DS22184A-page 24 © 2009 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. © 2009 Microchip Technology Inc. 24AA32AF/24LC32AF CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • ...

  • Page 26

    ... 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? DS22184A-page 26 Total Pages Sent ________ FAX: (______) _________ - _________ N Literature Number: DS22184A © 2009 Microchip Technology Inc. ...

  • Page 27

    ... Package Device Range Device: 24AA32AF: 1.7V, 32 Kbit I with half-array write-protect 24AA32AFT: 1.7V, 32 Kbit I with half-array write-protect (Tape and Reel) 24LC32AF: 2.5V, 32 Kbit I with half-array write-protect 24LC32AFT: 2.5V, 32 Kbit I with half-array write-protect (Tape and Reel) Temperature I = -40°C to +85°C Range -40°C to +125°C Package: ...

  • Page 28

    ... NOTES: DS22184A-page 28 © 2009 Microchip Technology Inc. ...

  • Page 29

    ... 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. © 2009 Microchip Technology Inc. Trademarks The Microchip name and logo, the Microchip logo, Accuron, dsPIC, K ...

  • 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 © 2009 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 ...