XR16L570 Datasheet, PDF (33/46 Pages) Exar Corporation – SMALLEST 1.62V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE

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REV. 1.0.0
XR16L570
SMALLEST 1.62V TO 5.5V UART WITH 16-BYTE FIFO AND POWERSAVE
TABLE 11: UART RESET CONDITIONS FOR CHANNEL A AND B
REGISTERS
RESET STATE
DLM and DLL Bits 15-0 = 0x0001. Resets upon power up only and not when only
the Reset Pin is asserted.
RHR
Bits 7-0 = 0xXX
THR
Bits 7-0 = 0xXX
IER
Bits 7-0 = 0x00
FCR
Bits 7-0 = 0x00
ISR
Bits 7-0 = 0x01
LCR
Bits 7-0 = 0x00
MCR
Bits 7-0 = 0x00
LSR
Bits 7-0 = 0x60
MSR
SPR
Bits 7-5, 3-0 = Logic 0
Bits 4 = Logic level of the CTS# input inverted
Bits 7-0 = 0xFF
EFR
Bits 7-0 = 0x00
XON1
Bits 7-0 = 0x00
XON2
Bits 7-0 = 0x00
XOFF1
Bits 7-0 = 0x00
XOFF2
Bits 7-0 = 0x00
I/O SIGNALS
RESET STATE
TX
HIGH
RTS#
HIGH
DTR#
HIGH
INT
Three-State Condition
ABSOLUTE MAXIMUM RATINGS
Power Supply Range
Voltage at Any Pin
Operating Temperature
Storage Temperature
Package Dissipation
7 Volts
GND-0.3 V to 7 V
-40^o to +85^oC
-65^o to +150^oC
500 mW
TYPICAL PACKAGE THERMAL RESISTANCE DATA (MARGIN OF ERROR: ± 15%)
Thermal Resistance (24-QFN)
Thermal Resistance (32-QFN)
theta-ja = 38^oC/W, theta-jc = 26^oC/W
theta-ja = 33^oC/W, theta-jc = 22^oC/W
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