Micrel, Inc.
Pin Number
44
45
46
47
48
Note:
1.
P = Power supply.
Gnd = Ground.
I = Input.
O = Output.
I/O = Bi-directional.
Ipd = Input with internal pull-down.
Ipu = Input with internal pull-up.
Ipd/O = Input with internal pull-down during reset; output pin otherwise.
Ipu/O = Input with internal pull-up during reset; output pin otherwise.
KS8721BL/SL
Pin Name
GND
XO
XI
VDDPLL
RST#
Type
(1)
Gnd
O
I
P
Ipu
Pin Function
Ground.
XTAL feedback: Used with XI for Xtal application.
Crystal Oscillator Input: Input for a crystal or an external 25MHz clock.
If an oscillator is used, XI connects to a 3.3V tolerant oscillator, and X2 is a no-connect.
Analog PLL 2.5V power supply. See “Circuit Design Ref. for Power Supply” section for
details.
Chip Reset. Active low, minimum of 50µs pulse is required.
June 2009
9
M9999-062509-1.3
MICROCHIP [ MICROCHIP TECHNOLOGY ]
