XR16M570
4
1.62V TO 3.63V HIGH PERFORMANCE UART WITH 16-BYTE FIFO REV. 1.0.1
Pin type: I=Input, O=Output, I/O= Input/output.
DSR# - 25 C4 I
UART Data-Set-Ready (active low) or general purpose input. This
input should be connected to VCC when not used.
CD# - 26 - I
UART Carrier-Detect (active low) or general purpose input. This
input should be connected to VCC when not used.
RI# - 27 - I
UART Ring-Indicator (active low) or general purpose input. This
input should be connected to VCC when not used.
ANCILLARY SIGNALS
XTAL1 8 10 D5 I
Crystal or external clock input.
XTAL2 - 11 - O
Crystal or buffered clock output.
PwrSave 7 - - I
Power-Save (active high). This feature isolates the M570’s data bus
interface from the host preventing other bus activities that cause
higher power drain during sleep mode. See Sleep Mode with Auto
Wake-up and Power-Save Feature section for details. This pin does
not have a pull-down resistor. This input should be connected to
GND when not used.
RESET 17 23 A2 I
This input is active high. A 40 ns minimum active pulse on this pin
will reset the internal registers and all outputs of the UART. The
UART transmitter output will be held at logic 1, the receiver input
will be ignored and outputs are reset during reset period (see UART
Reset Conditions).
VCC 19 28 B1 Pwr
1.62V to 3.63V power supply.
GND 10 13 E5 Pwr
Power supply common, ground.
GND Center
Pad
Center
Pad
-Pwr
The center pad on the backside of the QFN package is metallic and
should be connected to GND on the PCB. The thermal pad size on
the PCB should be the approximate size of this center pad and
should be solder mask defined. The solder mask opening should be
at least 0.0025" inwards from the edge of the PCB thermal pad.
NC - 2, 9, 15,
16
--
No Connects.
Pin Description
NAME
24-QFN
PIN#
32-QFN
PIN#
25-BGA
PIN#
T
YPE DESCRIPTION
