23K256-I/SN Microchip Technology, 23K256-I/SN Datasheet

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23K256-I/SN

Manufacturer Part Number
23K256-I/SN
Description
IC SRAM 256KBIT 20MHZ 8SOIC
Manufacturer
Microchip Technology
Type
Synchronousr
Datasheets

Specifications of 23K256-I/SN

Memory Size
256K (32K x 8)
Package / Case
8-SOIC (3.9mm Width)
Format - Memory
RAM
Memory Type
SRAM
Speed
20MHz
Interface
SPI Serial
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Access Time
25 ns
Maximum Clock Frequency
20 MHz
Supply Voltage (max)
3.6 V
Supply Voltage (min)
2.7 V
Maximum Operating Current
10 mA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Number Of Ports
1
Operating Supply Voltage
3.3 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
Part Number:
23K256-I/SN
Manufacturer:
MCP
Quantity:
200
Part Number:
23K256-I/SN
Manufacturer:
MIROCHIP
Quantity:
1 600
Part Number:
23K256-I/SN
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Company:
Part Number:
23K256-I/SN
Quantity:
7 200
Company:
Part Number:
23K256-I/SN
Quantity:
14
Device Selection Table
Features:
• Max. Clock 20 MHz
• Low-Power CMOS Technology:
• 32,768 x 8-bit Organization
• 32-Byte Page
• HOLD pin
• Flexible Operating modes:
• Sequential Read/Write
• High Reliability
• Temperature Ranges Supported:
• Pb-Free and RoHS Compliant, Halogen Free
Pin Function Table
 2010 Microchip Technology Inc.
CS
SO
V
SI
SCK
HOLD
V
- Read Current: 3 mA at 1 MHz
- Standby Current: 4 A Max. at +85°C
- Byte read and write
- Page mode (32 Byte Page)
- Sequential mode
- Industrial (I):
- Automotive (E):
SS
CC
Part Number
Name
23K256
23A256
Chip Select Input
Serial Data Output
Ground
Serial Data Input
Serial Clock Input
Hold Input
Supply Voltage
256K SPI Bus Low-Power Serial SRAM
-40C
-40C
V
1.5-1.95V
CC
2.7-3.6V
Function
Range
to
to
+125C
+85C
Page Size
32 Byte
32 Byte
23A256/23K256
Description:
The Microchip Technology Inc. 23X256 are 256 Kbit
Serial SRAM devices. 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,
transitions on its inputs will be ignored, with the
exception of Chip Select, allowing the host to service
higher priority interrupts.
The 23X256 is available in standard packages
including 8-lead PDIP and SOIC, and advanced
packaging including 8-lead TSSOP.
Package Types (not to scale)
Temp. Ranges
I, E
I
V
CS
SO
NC
SS
PDIP/SOIC/TSSOP
1
2
3
4
(P, SN, ST)
8
7
6
5
Packages
P, SN, ST
P, SN, ST
V
HOLD
SCK
SI
DS22100E-page 1
CC

Related parts for 23K256-I/SN

23K256-I/SN Summary of contents

Page 1

... SI Serial Data Input SCK Serial Clock Input HOLD Hold Input V Supply Voltage CC  2010 Microchip Technology Inc. 23A256/23K256 Page Size Temp. Ranges 32 Byte Byte I Description: The Microchip Technology Inc. 23X256 are 256 Kbit Serial SRAM devices. The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus ...

Page 2

... V can be lowered without losing RAM data. This parameter is periodically +0.3V CC Test Conditions 23A256 (I-Temp) 23K256 (I,E-Temp -400  OUT MHz CLK MHz CLK MHz CLK 1.8V, Inputs tied to V ...

Page 3

... Clock delay time CLD 12 T Output valid from clock low Output hold time HO Note 1: This parameter is periodically sampled and not 100% tested.  2010 Microchip Technology Inc. Industrial (I -40°C to +85°C A Automotive (E -40°C to +125°C A Min. Max. Units 1.5V (I-Temp) — ...

Page 4

... A Automotive (E -40°C to +125°C A Min. Max. Units — — — — — — — ns — 0 — Test Conditions 1.5V (I-Temp 1.8V (I-Temp 3.0V (E-Temp 3.0V (I-Temp — — — —  2010 Microchip Technology Inc. ...

Page 5

... HOLD TIMING CS 15 SCK HOLD FIGURE 1-2: SERIAL INPUT TIMING CS 2 SCK MSB in SO FIGURE 1-3: SERIAL OUTPUT TIMING SCK 12 MSB out SO SI  2010 Microchip Technology Inc High-Impedance n Don’t Care High-Impedance 13 Don’t Care 23X256 LSB LSB out DS22100E-page 5 ...

Page 6

... Figure Page Operation – is selected when bits 7 and 6 in the STATUS register are set to 10. The 23A256/23K256 has 1024 pages of 32 Bytes. In this mode, the read and write operations are limited to within the addressed page (the address is automatically incremented internally). If the ...

Page 7

... SO FIGURE 2-2: BYTE WRITE SEQUENCE SCK Instruction High-Impedance SO  2010 Microchip Technology Inc. Description Read data from memory array beginning at selected address Write data to memory array beginning at selected address Read STATUS register Write STATUS register 16-bit Address 16-bit Address 23X256 Data Out ...

Page 8

... High Impedance SCK SI Page X, Word Y FIGURE 2-4: PAGE WRITE SEQUENCE SCK Instruction SCK Page X, Word Y DS22100E-page 16-bit Address Page X, Word Y Page X, Word 16-bit Address Page X, Word Y Page X, Word Page X, Word Page X, Word Page X, Word Page X, Word  2010 Microchip Technology Inc. ...

Page 9

... FIGURE 2-5: SEQUENTIAL READ SEQUENCE SCK Instruction SCK SI Page X, Word SCK SI Page X+1, Word  2010 Microchip Technology Inc 16-bit Address Page X+1, Word Page X+n, Word 23X256 Page X, Word Page X+1, Word Page X+n, Word DS22100E-page 9 ...

Page 10

... FIGURE 2-6: SEQUENTIAL WRITE SEQUENCE SCK Instruction SCK Data Byte DS22100E-page 16-bit Address Data Byte Data Byte Data Byte  2010 Microchip Technology Inc. ...

Page 11

... SCK Instruction High-Impedance SO  2010 Microchip Technology Inc. The mode bits indicate the operating mode of the SRAM. The possible modes of operation are Byte mode (default operation Page mode Sequential mode Reserved Write and read commands are shown in Figure 2- The HOLD bit enables the Hold pin functionality. It must – ...

Page 12

... WRITE STATUS REGISTER TIMING SEQUENCE (WRSR SCK Instruction 2.7 Power-On State The 23X256 powers on in the following state: • The device is in low-power Standby mode ( • A high-to-low-level transition required to enter active state DS22100E-page 12 for the Data to STATUS Register High-Impedance  2010 Microchip Technology Inc. ...

Page 13

... Instructions, addresses or data present on the SI pin are latched on the rising edge of the clock input, while data on the SO pin is updated after the falling edge of the clock input.  2010 Microchip Technology Inc. 3.5 Hold (HOLD) The HOLD pin is used to suspend transmission to the Table 3-1 ...

Page 14

... In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. DS22100E-page 14 Example: 23K256 I/P e 1L7 3 0528 Example: 23K256I SN e 0528 3 1L7 Example: K256 I837 1L7  2010 Microchip Technology Inc. ...

Page 15

... PLO %RG\ >3',3@ 1RWH N NOTE 1RWHV  2010 Microchip Technology Inc 23X256 c DS22100E-page 15 ...

Page 16

... Note: DS22100E-page 16  2010 Microchip Technology Inc. ...

Page 17

... Note:  2010 Microchip Technology Inc. 23X256 DS22100E-page 17 ...

Page 18

... PP %RG\ >62,&@ 1RWH DS22100E-page 18  2010 Microchip Technology Inc. ...

Page 19

... PP %RG\ >76623@ 1RWH NOTE 1RWHV  2010 Microchip Technology Inc 23X256 φ L DS22100E-page 19 ...

Page 20

... Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging DS22100E-page 20  2010 Microchip Technology Inc. ...

Page 21

... Revised Section 2.5: Added a paragraph. Revision D (04/2009) Removed Preliminary status; Revised Current; Revised Table 1-1, Param. No. D009; Revised TSSOP Package marking; Revised Product ID. Revision E (08/2010) Revised Table 1-1, Param. No. D009; Revised Package Drawings.  2010 Microchip Technology Inc. Standby 23X256 DS22100E-page 21 ...

Page 22

... NOTES: DS22100E-page 22  2010 Microchip Technology Inc. ...

Page 23

... To register, access the Microchip web site at www.microchip.com, click on Customer Change Notification and follow the registration instructions.  2010 Microchip Technology Inc. 23A256/23K256 CUSTOMER SUPPORT Users of Microchip products can receive assistance through several channels: • Distributor or Representative • ...

Page 24

... City / State / ZIP / Country Telephone: (_______) _________ - _________ Application (optional): Would you like a reply? Y 23A256/23K256 Device: 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 25

... Microchip Technology Inc. X /XX Examples: Package 23A256/23K256 . 23K256-I/ST = 256 Kbit, 3.6V Serial SRAM, Industrial temp., TSSOP package 23A256T-I/SN = 256 Kbit, 1.8V Serial SRAM, Industrial temp., Tape & Reel, SOIC package 23K256-E/ST = 256 Kbit, 3.6V Serial SRAM, Automotive temp., TSSOP package DS22100E-page 25 ...

Page 26

... NOTES: DS22100E-page 26  2010 Microchip Technology Inc. ...

Page 27

... PICtail, REAL ICE, rfLAB, Select Mode, Total Endurance, TSHARC, UniWinDriver, 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 28

... Philippines - Manila Tel: 63-2-634-9065 Fax: 63-2-634-9069 Singapore Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan - Hsin Chu Tel: 886-3-6578-300 Fax: 886-3-6578-370 Taiwan - Kaohsiung Tel: 886-7-213-7830 Fax: 886-7-330-9305 Taiwan - Taipei Tel: 886-2-2500-6610 Fax: 886-2-2508-0102 Thailand - Bangkok Tel: 66-2-694-1351 Fax: 66-2-694-1350  2010 Microchip Technology Inc. 08/04/10 ...

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