Rainbow Electronics DS2141A - Manual (Page 31)

DS2141A
021997 31/35
MOTOROLA AC TIMING
AS
DS
R/W
AD0–AD7
(READ)
CS
AD0–AD7
(WRITE)
PW ASH
PW
EL
t
CYC
t RWS
t
ASD
t RWH
t
DDR
t
DHR
t CH
t
CS
t AHL
t
ASL
t
DHW
t
DSW
t
AHL
t
ASL
t
ASED
PW EH
AC CHARACTERISTICS – RECEIVE SIDE (0
°
C to 70
°
C; V
DD
= 5V
±
10%)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
RCLK and SYSCLK Period t
P
648 ns
RCLK and SYSCLK Pulse Width t
CH
t
CL
50
50
ns
ns
RPOS, RNEG, Setup to RCLK
Falling t
SU
25 ns
RPOS, RNEG, Hold from RCLK
Falling t
HD
25 ns
RCLK Rise/Fall Times t
R
, t
F
25 ns
Data Delay t
DD
120 ns
RSYNC Setup to
SYSCLK Falling t
SU
25 t
CH
–5 ns
RSYNC Pulse Width t
PW
50 ns