25C040-/P Microchip Technology, Inc., 25C040-/P Datasheet

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25C040-/P

Manufacturer Part Number
25C040-/P
Description
The 25AA040 is a 4K Bit Serial Electrically Erasable Prom With Memory Accessed Via a Simple Serial Peripheral Interface (SPI™) Compatible Serial Bus
Manufacturer
Microchip Technology, Inc.
Datasheet
DEVICE SELECTION TABLE
FEATURES
• Low power CMOS technology
• 512 x 8-bit organization
• 16 byte page
• Write cycle time: 5 ms max.
• Self-timed ERASE and WRITE cycles
• Block write protection
• Built-in write protection
• Sequential read
• High reliability
• 8-pin PDIP, SOIC, and TSSOP packages
• Temperature ranges supported:
PACKAGE TYPES
*25XX040 is used in this document as a generic part number for the 25AA040/25LC040/25C040 devices.
SPI™ is a trademark of Motorola Inc.
M
25AA040
25LC040
- Write current: 3 mA typical
- Read current: 500 A typical
- Standby current: 500 nA typical
- Protect none, 1/4, 1/2 or all of array
- Power on/off data protection circuitry
- Write enable latch
- Write protect pin
- Endurance: 1M cycles
- Data retention: > 200 years
- ESD protection: > 4000V
- Industrial (I):
- Automotive (E) (25C040):
2001 Microchip Technology Inc.
Number
25C040
Part
V
WP
SO
CS
SS
1
2
3
4
1.8-5.5V
2.5-5.5V
4.5-5.5V
PDIP
Range
V
CC
8
7
6
5
V
HOLD
SCK
SI
Max. Clock
Frequency
CC
4K SPI
1 MHz
2 MHz
3 MHz
-40 C to +85 C
-40°C to +125°C
25AA040/25LC040/25C040
Ranges
V
WP
CS
SO
Temp.
SS
I,E
Bus Serial EEPROM
I
I
1
2
3
4
SOIC
DESCRIPTION
The Microchip Technology Inc. 25AA040/25LC040/
25C040 (25XX040
able PROM. 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. Also, write operations to the device can be
disabled via the write protect pin (WP).
BLOCK DIAGRAM
8
7
6
5
HOLD
SCK
WP
SO
CS
V
HOLD
SCK
SI
SI
CC
I/O Control
Register
Status
Logic
*
) is a 4 Kbit serial Electrically Eras-
V
V
HOLD
CC
SS
V
Memory
SO
Control
CS
CC
Logic
1
2
3
4
TSSOP
Dec
X
DS21204C-page 1
Sense Amp.
R/W Control
Y Decoder
8
7
6
5
HV Generator
Page Latches
EEPROM
SCK
SI
V
WP
Array
SS

Related parts for 25C040-/P

25C040-/P Summary of contents

Page 1

... HOLD SCK *25XX040 is used in this document as a generic part number for the 25AA040/25LC040/25C040 devices. SPI™ trademark of Motorola Inc. 2001 Microchip Technology Inc. ™ Bus Serial EEPROM DESCRIPTION The Microchip Technology Inc. 25AA040/25LC040/ Temp. 25C040 (25XX040 Ranges able PROM ...

Page 2

... F CC — 5.5V CC — 2.5V CC — — +1. 1. 4.5V to 5.5V (25C040 only) CC Test Conditions < 2. OUT 3.0 MHz Open CLK = 2.0 MHz Open CLK = 5.5V, Inputs tied 2.5V, Inputs tied to V ...

Page 3

... CC 100 — 4.5V to 5.5V (Note 1) CC 150 — 2.5V to 4.5V (Note 1) CC 200 — 1.8V to 2.5V (Note 1) CC 100 — 4.5V to 5.5V CC 150 — 2.5V to 4.5V CC 200 — 1.8V to 2.5V CC — — 1M — E/W (Note 2) Cycles V = 1. 4.5V to 5.5V (25C040 only) CC Test Conditions DS21204C-page 3 ...

Page 4

... FIGURE 1-1: HOLD TIMING CS 16 SCK SO n+2 n+1 n+2 n+1 SI HOLD FIGURE 1-2: SERIAL INPUT TIMING CS 2 Mode 1,1 Mode 0,0 SCK MSB in high impedance SO FIGURE 1-3: SERIAL OUTPUT TIMING SCK 13 MSB out SO SI DS21204C-page high impedance n don’t care LSB in 14 don’ ...

Page 5

... AC Test Conditions AC Waveform 0. 0. 4.0V HI Timing Measurement Reference Level Input Output Note 1: For V 4. For V > 4.0V CC 2001 Microchip Technology Inc. 25AA040/25LC040/25C040 FIGURE 1-4: — (Note 1) (Note TEST CIRCUIT 2.25 K 100 pF 1.8 K DS21204C-page 5 ...

Page 6

... PIN DESCRIPTIONS The descriptions of the pins are listed in Table 2-1. TABLE 2-1: PIN FUNCTION TABLE Name PDIP SOIC TSSOP Chip Select Input Serial Data Output Write Protect Pin Ground Serial Data Input ...

Page 7

... Note the 9 address bit necessary to fully address 512 bytes. 8 2001 Microchip Technology Inc. 25AA040/25LC040/25C040 3.3 Write Sequence Prior to any attempt to write data to the 25XX040, the write enable latch must be set by issuing the WREN instruction (Figure 3-4). This is done by setting CS low and then clocking out the proper instruction into the 25XX040 ...

Page 8

... FIGURE 3-1: READ SEQUENCE SCK instruction high impedance SO FIGURE 3-2: BYTE WRITE SEQUENCE SCK instruction FIGURE 3-3: PAGE WRITE SEQUENCE SCK instruction ...

Page 9

... FIGURE 3-5: WRITE DISABLE SEQUENCE CS SCK SI SO 2001 Microchip Technology Inc. 25AA040/25LC040/25C040 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 (RDSR) The RDSR instruction provides access to the status register. The status register may be read at any time, even during a write cycle. The status register is format- ted as follows BP1 BP0 The Write-In-Process (WIP) bit indicates whether the 25XX040 is busy with a write operation. When set to a ‘ ...

Page 11

... Low X High 0 High 1 2001 Microchip Technology Inc. 25AA040/25LC040/25C040 3.8 Power On State The 25XX040 powers on in the following state: • The device is in low power standby mode ( • The write enable latch is reset • high impedance state • A low level required to enter active state ...

Page 12

... PACKAGING INFORMATION 4.1 Package Marking Information 8-Lead PDIP (300 mil) XXXXXXXX XXXXXNNN YYWW 8-Lead SOIC (150 mil) XXXXXXXX XXXXYYWW NNN 8-Lead TSSOP XXXX XYWW NNN 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 ‘ ...

Page 13

... 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-001 Drawing No. C04-018 2001 Microchip Technology Inc. 25AA040/25LC040/25C040 ...

Page 14

... Plastic Small Outline (SN) – Narrow, 150 mil (SOIC 45× c Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Chamfer Distance Foot Length Foot Angle Lead Thickness ...

Page 15

... 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 .005” (0.127mm) per side. JEDEC Equivalent: MO-153 Drawing No. C04-086 2001 Microchip Technology Inc. 25AA040/25LC040/25C040 ...

Page 16

... ON-LINE SUPPORT Microchip provides on-line support on the Microchip World Wide Web (WWW) site. The web site is used by Microchip as a means to make files and information easily available to customers. To view the site, the user must have access to the Internet and a web browser, such as Netscape Explorer ...

Page 17

... What deletions from the data sheet could be made without affecting the overall usefulness there any incorrect or misleading information (what and where)? 7. How would you improve this document? 8. How would you improve our software, systems, and silicon products? 2001 Microchip Technology Inc. 25AA040/25LC040/25C040 Total Pages Sent FAX: (______) _________ - _________ N Literature Number: ...

Page 18

... Tape and Reel (ST only) 25C040: 4096-bit 5.0V SPI Serial EEPROM 25C040T: 4096-bit 5.0V SPI Serial EEPROM (Tape and Reel) 25C040X: 4096-bit 5.0V SPI Serial EEPROM in alternate pinout (ST only) 25C040XT: 4096-bit 5.0V SPI Serial EEPROM in alternate pinout Tape and Reel (ST only) Temperature I = -40 C to+85 C Range: E ...

Page 19

... All other trademarks mentioned herein are the property of their respective companies. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights.” 2001 Microchip Technology Inc. 25AA040/25LC040/25C040 Trademarks The Microchip PICMASTER, PICSTART, PRO MATE, K SEEVAL, MPLAB and The Embedded Control Solutions Company are registered trademarks of Microchip Technology Incorporated in the U ...

Page 20

M W ORLDWIDE AMERICAS Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: 480-792-7627 Web Address: http://www.microchip.com Rocky Mountain 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7966 Fax: 480-792-7456 Atlanta 500 Sugar Mill ...

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