ZL30100 Data Sheet
25
Zarlink Semiconductor Inc.
Figure 13 - Crystal Oscillator Circuit
6.3 Power Up Sequence
The ZL30100 requires that the 3.3 V rail is not powered-up later than the 1.8 V rail. This is to prevent the risk of
latch-up due to the presence of parasitic diodes in the IO pads.
Two options are given:
1. Power up the 3.3 V rail fully first, then power up the 1.8 V rail
2. Power up the 3.3 V rail and 1.8 V rail simultaneously, ensuring that the 3.3 V rail voltage is never lower than the
1.8 V rail voltage minus a few hundred millivolts (e.g., by using a schottky diode or controlled slew rate)
OSCo
1 MΩ
20 MHz
ZL30100
OSCi
100 Ω
1 µH
The 100 Ω resistor and the 1 µH inductor may improve
stability and are optional.
ZL30100 Data Sheet
26
Zarlink Semiconductor Inc.
6.4 Reset Circuit
A simple power up reset circuit with about a 60 μs reset low time is shown in Figure 14. Resistor R
P
is for protection
only and limits current into the RST
pin during power down conditions. The reset low time is not critical but should
be greater than 300 ns.
Figure 14 - Power-Up Reset Circuit
+3.3 V
RST
R
P
1 kΩ
C
10 nF
R
10 kΩ
ZL30100
ZL30100 Data Sheet
27
Zarlink Semiconductor Inc.
7.0 Characteristics
7.1 AC and DC Electrical Characteristics
* Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.
* Voltages are with respect to ground (GND) unless otherwise stated.
* Voltages are with respect to ground (GND) unless otherwise stated.
Absolute Maximum Ratings*
Parameter Symbol Min. Max. Units
1 Supply voltage V
DD_R
-0.5 4.6 V
2 Core supply voltage V
CORE_R
-0.5 2.5 V
3 Voltage on any digital pin V
PIN
-0.5 6 V
4 Voltage on OSCi and OSCo pin V
OSC
-0.3 V
DD
+ 0.3 V
5 Current on any pin I
PIN
30 mA
6 Storage temperature T
ST
-55 125 °C
7 TQFP 64 pin package power dissipation P
PD
500 mW
8 ESD rating V
ESD
2 kV
Recommended Operating Conditions*
Characteristics Sym. Min. Typ. Max. Units
1 Supply voltage V
DD
2.97 3.30 3.63 V
2 Core supply voltage V
CORE
1.62 1.80 1.98
V
3 Operating temperature T
A
-40 25 85 °C

ZL30100QDG1

Mfr. #:
Manufacturer:
Microchip / Microsemi
Description:
Clock Generators & Support Products Pb Free T1/E1 SYSTEM SYNCHRONIZER
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet