XR68C681J-F Exar Corporation, XR68C681J-F Datasheet - Page 42

IC UART CMOS DUAL 44PLCC

XR68C681J-F

Manufacturer Part Number
XR68C681J-F
Description
IC UART CMOS DUAL 44PLCC
Manufacturer
Exar Corporation
Type
CMOS Dual Channel UARTr
Datasheet

Specifications of XR68C681J-F

Number Of Channels
2, DUART
Package / Case
44-LCC (J-Lead)
Features
*
Fifo's
1 Byte, 3 Byte
Voltage - Supply
5V
Mounting Type
Surface Mount
Data Rate
1 Mbps
Supply Voltage (max)
5.5 V
Supply Voltage (min)
4.5 V
Supply Current
15 mA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Operating Supply Voltage
5 V
Propagation Delay Time Ns
400 ns
No. Of Channels
2
Supply Voltage Range
4.75V To 5.25V
Operating Temperature Range
-40°C To +85°C
Digital Ic Case Style
PLCC
No. Of Pins
44
Filter Terminals
SMD
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
1016-1324-5

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Manufacturer
Quantity
Price
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XR68C681J-F
Manufacturer:
EAXR
Quantity:
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Part Number:
XR68C681J-F
Manufacturer:
Exar Corporation
Quantity:
10 000
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Note:
G. SERIAL CHANNELS A and B
OPCR only addresses the alternate functions for output port pins, OP7 - OP2. OP0 and OP1 assume their RTS roles if either
MR1n[7] = 1 or MR2n[5] = 1. Setting those mode register bits enables the RTS function. Otherwise, these two ports will only be
general purpose output ports.
XR68C681
Output Port
Bit 7
OP7
RTSA:
RTSB:
TXCA_16X Output:
TXCA_1X Output:
RXCA_1X: Output:
TXCB_1X Output:
RXCB_1X Output:
C/T_1_RDY:
when used as the Counter/Timer Ready Output.
RXRDY/FFULL_A Output:
RXRDY/FFULL_B Output:
TXRDY_A Output:
TXRDY_B Output:
Bit 6
OP6
Table 15. Listing of the Alternate Functions for the Output Port
Table 16. Output Port Configuration Register - OPCR
Bit 5
OP5
Bit 4
OP4
Alternate Function(s)
Bit 3
Note: This output is an Open-Drain output
OP3
Bit 2
Bit 1
OP2
Bit 0

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