SC28L91 Philips Semiconductors, SC28L91 Datasheet - Page 33

• Manufacturer Part Number: SC28L91
• Description: 3.3V-5.0V Universal Asynchronous Receiver/Transmitter (UART)
• Manufacturer: Philips Semiconductors

Bus action in the 80XXX mode terminates on the rise of CEN, WRN, or RDN which ever one occurs first.
Philips Semiconductors
NOTE:
2000 Sep 22
3.3V–5.0V Universal Asynchronous
Receiver/Transmitter (UART)
RESETN
(WRITE)
(READ)
A0–A3
D0–D7
D0–D7
WDN
RDN
CEN
FLOAT
80XXX Mode
t
t
t
AS
CS
RES
t
AH
t
Figure 5. Bus Timing (80XXX mode)
DD
VALID
NOT
t
RW
Figure 4. Reset Timing
t
DS
VALID
VALID
33
t
CH
t
DF
RESETN
t
DH
t
t
RWD
RWD
FLOAT
68XXX Mode
t
RES
SD00087
Product specification
SC28L91
SD00696