Rainbow Electronics DS1680 - Manual (Page 20)

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