3v ± 10%), Parallel interface output timing figure 9 – Rainbow Electronics DS1680 User Manual
Page 20
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DS1680
20 of 23
POWER-FAIL AND RESET CHARACTERISTICS
(0ºC to +70ºC; V
CC
= 3.3V ± 10%)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS NOTES
PFI Low to
PFO
Low
t
PFD
200
ns
PFI High to
PFO
High
t
PFU
200
ns
V
CC
Detect to
RST
(V
CC
Falling)
t
RPD
200
ns
V
CC
Detect to
RST
(V
CC
Rising)
t
RPU
250
ms
15, 16
Reset Active Time
t
RST
250
ms
15
Pushbutton Debounce
PB
DB
250
ms
15
ST
Pulse Width
t
ST
40
ns
Chip-Enable Propagation Delay to
External SRAM
t
CED
8
15
ns
V
CCTP(MAX)
to V
CCSW(MIN)
Fall Time
t
FB
50
µs
20
PARALLEL INTERFACE OUTPUT TIMING Figure 9
X,
HIGH
AIN0,
HIGH
X,
LOW
AIN0,
LOW
Y,
HIGH
Y,
LOW
PEN_SELECT
D0 - D7
COEN
OUT_SELECT
BHE
AIN1,
LOW
AIN1,
LOW
t
OEZ
t
OEA
t
MUX
t
MUX
t
MUX
t
MUX
t
MUX
t
MUX
t
MUX
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