XR82C684CJ-F Exar Corporation, XR82C684CJ-F Datasheet - Page 24

• Manufacturer Part Number: XR82C684CJ-F
• Description: IC UART CMOS QUAD 68PLCC
• Manufacturer: Exar Corporation
• Type: CMOS Quad Channel UARTr

Specifications of XR82C684CJ-F

• Number Of Channels: 4, QUART
• Package / Case: 68-LCC (J-Lead)
• Features: *
• Fifo's: 3 Byte
• Voltage - Supply: 5V
• Mounting Type: Surface Mount
• Data Rate: 1 Mbps
• Supply Voltage (max): 5.25 V
• Supply Voltage (min): 4.75 V
• Supply Current: 15 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Operating Supply Voltage: 5 V
• Propagation Delay Time Ns: 400 ns
• No. Of Channels: 4
• Supply Voltage Range: 4.75V To 5.25V
• Operating Temperature Range: 0°C To +70°C
• Digital Ic Case Style: PLCC
• No. Of Pins: 68
• 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: 1016-1326-5

Note: If this bit is configured to reflect the FFULLC
indicator, this bit will not be set (nor will produce an
interrupt request) if one or two characters are still
remaining in RHRC, following data reception. Hence, it is
possible that the last two characters in a string of data
(being received) could be lost due to this phenomenon.
Therefore, the user is advised to read RHRC until empty.
ISR2[0]: Channel C Transmitter Ready
IMR1 Bit Format
IMR2 Bit Format
Please note that the IMRs are Write Only Registers, and
can therefore not be read by the processor.
XR82C684
Input Port
Input Port
Change
Change
Bit 7
Bit 7
Delta Break
Delta Break
Bit 6
Bit 6
B
D
FFULLB
FFULLD
RXRDY/
RXRDY/
Bit 5
Bit 5
TXRDY D
TXRDYB
Bit 4
Bit 4
C.2 Interrupt Mask Registers (IMR1 and IMR2)
C.3 Masked Interrupt Status Register (MISR1 and
MISR2)
Counter
Counter
Ready
Ready
Bit 3
Bit 3
Delta Break
Delta Break
Bit 2
Bit 2
A
C
FFULLA
FFULLC
RXRDY/
RXRDY/
Bit 1
Bit 1

TXRDYC
TXRDYA
Bit 0
Bit 0