 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
STK14C88-3 Datasheet(PDF) 13 Page - Simtek Corporation |
|
|
|||||||||||||||||||||||||||||
STK14C88-3 Datasheet(HTML) 13 Page - Simtek Corporation |
|
|
13 / 18 page  13 STK14C88-3 Feb, 2008 Document Control #ML0015 Rev 2.0 PREVENTING STORES The STORE function can be disabled on the fly by holding HSB high with a driver capable of sourcing 30mA at a V OH of at least 2.2V, as it will have to overpower the internal pull-down device that drives HSB low for 20 μs at the onset of a STORE. When the STK14C88-3 is connected for AutoStore opera- tion (system V CC connected to V CC and a 68 μF capacitor on V CAP) and VCC crosses VSWITCH on the way down, the STK14C88-3 will attempt to pull HSB low; if HSB doesn’t actually get below V IL, the part will stop trying to pull HSB low and abort the STORE attempt. HARDWARE PROTECT The STK14C88-3 offers hardware protection against inadvertent STORE operation and SRAM WRITEs dur- ing low-voltage conditions. When V CAP < VSWITCH, all externally initiated STORE operations and SRAM WRITE s will be inhibited. LOW AVERAGE ACTIVE POWER The STK14C88-3 draws significantly less current when it is cycled at times longer than 50ns. Figure 4 shows the relationship between I CC and READ cycle time. Worst-case current consumption is shown for both CMOS and TTL input levels (commercial tem- perature range, V CC = 3.6V, 100% duty cycle on chip enable). Figure 5 shows the same relationship for WRITE cycles. If the chip enable duty cycle is less than 100%, only standby current is drawn when the chip is disabled. The overall average current drawn by the STK14C88-3 depends on the following items: 1) CMOS vs. TTL input levels; 2) the duty cycle of chip enable; 3) the overall cycle rate for accesses; 4) the ratio of READs to WRITEs; 5) the operating tempera- ture; 6) the Vcc level; and 7) I/O loading. Figure 4: Icc (max) Reads Figure 5: Icc (max) Writes 0 20 40 60 80 100 50 100 150 200 Cycle Time (ns) TTL CMOS 0 20 40 60 80 100 50 100 150 200 Cycle Time (ns) TTL CMOS |
Similar Part No. - STK14C88-3_08 |
|
Similar Description - STK14C88-3_08 |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
