Cypress Semiconductor STK22C48 Технический паспорт - Страница 10
Просмотреть онлайн или скачать pdf Технический паспорт для Компьютерное оборудование Cypress Semiconductor STK22C48. Cypress Semiconductor STK22C48 15 страниц. 16 kbit (2k x 8) autostore nvsram
Печатать страницуAutoStore or Power Up RECALL
Parameter
Alt
[12]
t
t
HRECALL
RESTORE
[14, 15]
t
t
STORE
HLHZ
[13]
t
t
t
DELAY
HLQZ ,
BLQZ
V
SWITCH
V
RESET
[10]
t
VSBL
Switching Waveform
WE
Notes
12. t
starts from the time V
HRECALL
CC
13. CE and OE low for output behavior.
14. CE and OE low and WE high for output behavior.
15. HSB is asserted low for 1us when V
takes place.
Document Number: 001-51000 Rev. **
Description
Power up RECALL Duration
STORE Cycle Duration
Time Allowed to Complete SRAM Cycle
Low Voltage Trigger Level
Low Voltage Reset Level
Low Voltage Trigger (V
Figure 11. AutoStore/Power Up RECALL
rises above V
.
SWITCH
drops through V
. If an SRAM Write has not taken place since the last nonvolatile cycle, HSB is released and no store
CAP
SWITCH
Min
1
4.0
) to HSB Low
SWITCH
STK22C48
STK22C48
Unit
Max
μs
550
10
ms
μs
4.5
V
3.6
V
300
ns
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