English dropdown-ico

Cypress Semiconductor STK15C88 manual

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Go to page of

Similar user manuals

A good user manual

The rules should oblige the seller to give the purchaser an operating instrucion of Cypress Semiconductor STK15C88, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.

What is an instruction?

The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Cypress Semiconductor STK15C88 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.

Unfortunately, only a few customers devote their time to read an instruction of Cypress Semiconductor STK15C88. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.

What should a perfect user manual contain?

First and foremost, an user manual of Cypress Semiconductor STK15C88 should contain:
- informations concerning technical data of Cypress Semiconductor STK15C88
- name of the manufacturer and a year of construction of the Cypress Semiconductor STK15C88 item
- rules of operation, control and maintenance of the Cypress Semiconductor STK15C88 item
- safety signs and mark certificates which confirm compatibility with appropriate standards

Why don't we read the manuals?

Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Cypress Semiconductor STK15C88 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Cypress Semiconductor STK15C88, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Cypress Semiconductor service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Cypress Semiconductor STK15C88.

Why one should read the manuals?

It is mostly in the manuals where we will find the details concerning construction and possibility of the Cypress Semiconductor STK15C88 item, and its use of respective accessory, as well as information concerning all the functions and facilities.

After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.

Table of contents for the manual

  • Page 1

    STK15C88 256 Kbit (32K x 8) PowerS tore nvSRAM Cypress Semiconducto r Corporation • 198 Champion Court • San Jose , CA 95134-1709 • 408-943-2600 Document Number: 001-50593 Rev . ** Revised January 29, 2009 Features ■ 25 ns and 45 ns access times ■ Pin compatible with industry standard SRAMs ■ Automatic no nvolatile STORE on power loss ?[...]

  • Page 2

    STK15C88 Document Number: 001-50593 Rev . ** Page 2 of 15 Pin Configurations Figure 1. Pin Diagram - 28-Pin SOIC T able 1. Pin Defini tions - 28-Pin SOIC Pin Name Alt IO T ype Description A 0 –A 14 Input Address In pu ts. Used to select one of the 32,768 bytes of the nvSRAM. DQ 0 -DQ 7 Input or Output Bidirectional Data IO lines . Used as input o[...]

  • Page 3

    STK15C88 Document Number: 001-50593 Rev . ** Page 3 of 15 Device Operation The STK15C88 is a versatil e memo ry chip that provides several modes of operation. The STK15C 88 can operate as a standard 32K x 8 SRAM. It has a 32K x 8 nonvolatile element shad ow to which the SRAM info rmation can be copied , or from which the SRAM can be updated in nonv[...]

  • Page 4

    STK15C88 Document Number: 001-50593 Rev . ** Page 4 of 15 Hardware Protect The STK15C88 offers hardware protectio n against inadve rtent STORE operation and SRAM WRITEs during low voltage conditions. When V CAP <V SWITCH , all externally i nitiated STORE operations and SRAM WRITEs are inhibited. Noise Considerations The STK15C88 is a high speed [...]

  • Page 5

    STK15C88 Document Number: 001-50593 Rev . ** Page 5 of 15 T able 2. Software STOR E/RECALL Mode Selecti on CE WE A 13 – A 0 Mode IO Notes L H 0x0E38 0x31C7 0x03E0 0x3C1F 0x303F 0x0FC0 Read SRAM Read SRAM Read SRAM Read SRAM Read SRAM Nonvolatile STORE Output Data Output Data Output Data Output Data Output Data Output Data [1, 2] L H 0x0E38 0x31C7[...]

  • Page 6

    STK15C88 Document Number: 001-50593 Rev . ** Page 6 of 15 Maximum Ratin gs Exceeding maximum ratings may shorten the useful life of the device. These user g uidelines are not tested. S torage T emperature ............. ... ... ... ........... –65 ° C to +150 ° C T emperature under bias ................ .............. –55 ° C to +125 ° C Sup[...]

  • Page 7

    STK15C88 Document Number: 001-50593 Rev . ** Page 7 of 15 Dat a Retention and Endurance Parameter Description Min Unit DA T A R Data Retention 100 Y ears NV C Nonvolatile STORE Operations 1,000 K Cap acit ance In the following table, the capacitance parameters are listed. [4] Parameter Description T est Condi tions Max Unit C IN Input Capacit ance [...]

  • Page 8

    STK15C88 Document Number: 001-50593 Rev . ** Page 8 of 15 AC Switching Characteristics SRAM Read Cycle Parameter Description 25 ns 45 ns Unit Min Max Min Max Cypress Parameter Alt t ACE t ELQV Chip Enable Access Time 25 45 ns t RC [5] t AVAV, t ELEH Read Cycle T ime 25 45 ns t AA [6] t AV Q V Address Access T ime 25 45 ns t DOE t GLQV Output Enab l[...]

  • Page 9

    STK15C88 Document Number: 001-50593 Rev . ** Page 9 of 15 T able 3. SRAM Write Cycle Parameter Description 25 n s 45 ns Unit Min Max Min Max Cypress Parameter Alt t WC t AVAV Write Cycle T ime 25 45 ns t PWE t WL WH, t WLEH Write Pulse Width 20 30 ns t SCE t EL WH, t ELEH Chip Enable T o End of Write 20 30 ns t SD t DVWH, t DVEH Data Setup to End o[...]

  • Page 10

    STK15C88 Document Number: 001-50593 Rev . ** Page 10 of 15 AutoS tore or Power Up RECALL Parameter Alt Description STK15C88 Unit Min Max t HRECALL [10] t RESTORE Power up RECALL Duration 550 μ s t STORE [6] t HLHZ STORE Cycle Duration 10 ms V RESET Low V oltage Reset Leve l 3.6 V V SWITCH Low V oltage T rigger Level 4.0 4.5 V Switching W aveforms [...]

  • Page 11

    STK15C88 Document Number: 001-50593 Rev . ** Page 1 1 of 15 Sof tware Controlled STORE/RECALL Cycle The software controlled ST ORE/RECALL cycle follows. [1 1, 12] Parameter Alt Description 25 ns 45 ns Unit Min Max Min Max t RC t AVAV STORE/RECALL Initiation Cycle T ime 25 45 ns t SA [1 1] t A VEL Address Setup T ime 0 0 ns t CW [1 1] t ELEH Clock P[...]

  • Page 12

    STK15C88 Document Number: 001-50593 Rev . ** Page 12 of 15 Ordering Information Spe e d (ns) Ordering Code Package Diagra m Package T ype Operating Range 25 STK15C88-NF25TR 51-8502 6 28-Pin SOIC (300 mil) Commercial STK15C88-NF25 51-85026 28-Pin SO IC (300 mil) STK15C88-SF25TR 51-85058 28-Pin SOIC (330 mil) STK15C88-SF25 51-85058 28-Pin SOIC (330 m[...]

  • Page 13

    STK15C88 Document Number: 001-50593 Rev . ** Page 13 of 15 Package Diagrams Figure 1 1. 28-Pin (300 mil) SOIC (51-8502 6) 51 85127 *A PIN 1 ID 0.291[7.39] 0.300[7.62] 0.394[10.01] 0.419[10.64] 0.050[1.27] TYP. 0.092[2.33] 0.105[2.67] 0.004[0.10] 0.0118[0.30] SEATING PLANE 0.0091[0.23] 0.0125[3.17] 0.015[0.38] 0.050[1.27] 0.013[0.33] 0.019[0.48] 0.0[...]

  • Page 14

    STK15C88 Document Number: 001-50593 Rev . ** Page 14 of 15 Figure 12. 28-Pin (330 mil) SOIC (51-85 058 ) Package Diagrams (continued) 51-85058-*A [+] Feedback[...]

  • Page 15

    Document Number: 001-50593 Rev . ** Revised January 29, 20 09 Page 15 of 15 AutoS tore and Qua ntumTr ap are registered tr ademarks of Cypress Se miconductor Corpor ation. All produ cts and comp any names mentio ned in this docum ent may be the trade marks of t heir respe ctive holders. STK15C88 © Cypress Semicondu ctor Corpor ation, 2008-200 9. T[...]