XR16L580IL-F Exar Corporation, XR16L580IL-F Datasheet - Page 8

• Manufacturer Part Number: XR16L580IL-F
• Description: UART Interface IC UART
• Manufacturer: Exar Corporation

Specifications of XR16L580IL-F

• Data Rate: 1 Mbps
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.25 V
• Supply Current: 3 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Package / Case: QFN
• No. Of Channels: 1
• Uart Features: Selectable RX And TX FIFO Trigger Levels, Automatic Software Flow Control, Complete Modem Interface
• Supply Voltage Range: 2.25V To 5.5V
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

XR16L580
SMALLEST 2.25V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
The CPU interface is 8 data bits wide with 3 address lines and control signals to execute data bus read and
write transactions. The L580 data interface supports the Intel compatible types of CPUs and it is compatible to
the industry standard 16C550 UART. No clock (oscillator nor external clock) is required to operate a data bus
transaction. Each bus cycle is asynchronous using CS#, IOR# and IOW# or R/W# inputs. A typical data bus
interconnection for Intel and Motorola mode is shown in
F
2.0 FUNCTIONAL DESCRIPTIONS
2.1
IGURE
4. XR16L580 T
CPU Interface
UART_RESET#
UART_RESET
UART_IRQ#
UART_CS#
UART_CS#
UART_INT
IOW#
R/W#
IOR#
A0
A1
A2
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
D0
D1
D2
D3
D4
D5
D6
D7
YPICAL
I
NTEL
/M
Motorola Data Bus Interconnections
OTOROLA
Intel Data Bus Interconnections
D
ATA
VCC
8
B
Figure
US
IOR#
IOW#
IOR#
IOW#
RESET
RESET
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
CS#
CS#
A0
A1
A2
A0
A1
A2
INT
INT
I
NTERCONNECTIONS
4.
PwrSave
PwrSave
16/68#
16/68#
DTR#
RTS#
CTS#
DSR#
DTR#
RTS#
CTS#
DSR#
GND
GND
CD#
CD#
VCC
VCC
RI#
RI#
TX
RX
TX
RX
VCC
VCC
RS-232 or RS-422
RS-232 or RS-422
Serial Interface of
Serial Interface of
REV. 1.4.1