STK12C68
Document Number: 001-51027 Rev. **
Page 11 of 20
AutoStore or Power Up RECALL
Parameter
Alt
Description
STK12C68
Unit
Min
Max
t
HRECALL
[13]
t
RESTORE
Power up RECALL Duration
550
μ
s
t
STORE
[14, 15, 16]
t
HLHZ
STORE Cycle Duration
10
ms
t
DELAY
[9, 15]
t
HLQZ ,
t
BLQZ
Time Allowed to Complete SRAM Cycle
1
μ
s
V
SWITCH
Low Voltage Trigger Level
4.0
4.5
V
V
RESET
Low Voltage Reset Level
3.9
V
t
VCCRISE
V
CC
Rise Time
150
μ
s
t
VSBL
[11]
Low Voltage Trigger (V
SWITCH
) to HSB Low
300
ns
Switching Waveform
Figure 11. AutoStore/Power Up RECALL
WE
Notes
13. t
HRECALL
starts from the time V
CC
rises above V
SWITCH
.
14. CE and OE low for output behavior.
15. CE and OE low and WE high for output behavior.
16. HSB is asserted low for 1us when V
CAP
drops through V
SWITCH
. If an SRAM Write has not taken place since the last nonvolatile cycle, HSB is released and no store
takes place.
[+] Feedback
