SC28L92 Philips Semiconductors, SC28L92 Datasheet - Page 36

• Manufacturer Part Number: SC28L92
• Description: 3.3V-5.0V Dual Universal Asynchronous Receiver/Transmitter DUART
• Manufacturer: Philips Semiconductors

Philips Semiconductors
2000 Jan 21
3.3V–5.0V Dual Universal Asynchronous
Receiver/Transmitter (DUART)
NOTE: DACKN low requires two rising edges of X1 clock after CSN is low.
NOTE: DACKN low requires two rising edges of X1 clock after CSN is low.
DTACKN
X1/CLK
DTACKN
D0–D7
A1–A4
X1/CLK
D0–D7
RWN
A1–A4
CSN
RWN
CSN
t
DA
Figure 7. Bus Timing (Write Cycle) (68XXX mode)
Figure 6. Bus Timing (Read Cycle) (68XXX mode)
t
t
AS
AS
t
CS
t
VALID
CS
t
t
NOT
CSC
DD
t
t
DS
CSC
t
AH
t
AH
t
DCW
t
DCR
36
DATA VALID
t
DAT
t
DAT
t
RWD
t
RWD
t
t
t
CH
t
CH
t
DAH
t
DF
DH
DAH
SD00687
SD00688
Product specification
SC28L92