XR68C681J-F Exar Corporation, XR68C681J-F Datasheet - Page 17

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

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

ISR[7]: Input Port Change of State:


Section E
ISR[6] Delta Break Indicator - Channel B:
Input Port
Change
Bit 7
Delta Break
Bit 6
B
Table 5. Interrupt Status Register - (ISR) Bit Format
FFULLB
RXRDY/
Bit 5
Section G.2
TXRDYB
Bit 4
ISR[5] RXRDYB/FFULLB - Channel B Receiver
Ready or FIFO Full
ISR[4] TXRDYB - Channel B Transmitter Ready
Counter
Ready
Bit 3
Delta Break
Bit 2
A
XR68C681
FFULLA
RXRDY/
Bit 1
TXRDYA
Bit 0