scn2681 NXP Semiconductors, scn2681 Datasheet - Page 19

• Manufacturer Part Number: scn2681
• Description: Dual Asynchronous Receiver/transmitter Duart
• Manufacturer: NXP Semiconductors

Philips Semiconductors
TIMING DIAGRAMS
2004 Mar 18
Dual asynchronous receiver/transmitter (DUART)
(WRITE)
(READ)
A0–A3
D0–D7
D0–D7
WDN
RDN
CEN
OP0–OP7
IP0–IP6
RESET
WRN
RDN
FLOAT
t
t
AS
CS
t
PS
t
AH
t
DD
VALID
NOT
t
RW
OLD DATA
Figure 3. Reset Timing
Figure 5. Port Timing
Figure 4. Bus Timing
t
RES
t
DS
VALID
VALID
V
M
19
= 1.5V
t
CH
t
DF
t
PH
t
DH
t
PD
V
t
t
M
RWD
RWD
FLOAT
NEW DATA
SD00086
SD00089
V
V
OH
OL
SD00087
SCN2681
Product data