SCN68681E1A44 NXP Semiconductors, SCN68681E1A44 Datasheet - Page 19

• Manufacturer Part Number: SCN68681E1A44
• Manufacturer: NXP Semiconductors

Specifications of SCN68681E1A44

• Transmitter And Receiver Fifo Counter: No
• Operating Supply Voltage (typ): 5V
• Package Type: PLCC
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Mounting: Surface Mount
• Pin Count: 44
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Number Of Channels: 2
• Lead Free Status / RoHS Status: Not Compliant

Philips Semiconductors
2004 Mar 02
Dual asynchronous receiver/transmitter (DUART)
DACKN requires two rising edges of X1 clock after CEN is low.
NOTE:
RESETN
Figure 3. Reset Timing
DTACKN
X1/CLK
DTACKN
A1–A4
D0–D7
X1/CLK
A1–A4
D0–D7
RWN
CSN
t
RWN
RES
CSN
SD00109
t
AS
t
AS
Figure 5. Bus Timing (Write Cycle)
Figure 4. Bus Timing (Read Cycle)
t
AH
t
RWS
t
t
t
AH
CSC
RWS
t
t
t
DD
DS
CSC
t
DAL
t
DCW
t
DCR
19
t
CSD
t
CSD
t
DAT
t
DAT
t
CSW
t
CSW
t
t
t
t
RWH
t
DAH
t
RWH
DF
DH
DAH
SD00110
SD00111
SCN68681
Product data