XR88C681CP/40 Exar Corporation, XR88C681CP/40 Datasheet - Page 38

• Manufacturer Part Number: XR88C681CP/40
• Description: Dual Channel UART
• Manufacturer: Exar Corporation

Specifications of XR88C681CP/40

• Features: *
• Number Of Channels: 2, DUART
• Fifo's: 1 Byte, 3 Byte
• Voltage - Supply: 5V
• With Parallel Port: Yes
• With Cmos: Yes
• Mounting Type: Through Hole
• Package / Case: 40-DIP (0.600", 15.24mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Rev. 2.11
5V
MODA
MODB
68HC11
Figure 13. XR88C681/MC68HC11 Microcontroller Interfacing Approach
AD0 - AD7
A8 - A15
-R/W
-IRQ
AS
E
Address
Decoder
D
G
74HC373
38
Q
A4 - A7
A0 - A3
-CS
-RD
-WR
-INTR
A0 - A3
D0 - D7
to other ICs
XR88C681