FM31T372/374/376/378-G
Data Retention (TA = -40 C to + 85 C, VDD = 2.7V to 5.5V)
Symbol
Parameter
Min
Units
Notes
TDR
Data Retention
10
Years
Supervisor Timing (TA = -40 C to + 85 C, VDD = 2.7V to 5.5V)
Symbol
tRPU
tINTP
tRNR
tVR
tVF
tWDP
tWDOG
fCNT
Parameter
/RST Active (low) after VDD>VTP
Pulse Width of /INT Active
VDD < VTP noise immunity
VDD Rise Time
VDD Fall Time
Pulse Width of /RST for Watchdog Reset
Timeout of Watchdog
Min
Max
200
200
25
-
-
200
2*tDOG
10
Units
ms
ms
Notes
100
100
10
1
1,2
1,2
s
50
s/V
s/V
ms
ms
MHz
100
100
tDOG
0
3
Frequency of Event Counters
Notes
1
2
3
This parameter is characterized but not tested.
Slope measured at any point on VDD waveform.
tDOG is the programmed time in register 0Ah, VDD > VTP and tRPU satisfied.
/RST Timing
VDD
VTP
VRST
tRNR
tRPU
RST
/INT Pulse Width
CNT1,
CNT2
tINTP
INT
Rev. 1.1
Apr. 2011
Page 23 of 26
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
