Power and Clocking
Table 8-3. Power Consumption Specifications (Sheet 2 of 2)
Symbol | Description | Min1 | Typical1 | Max1 | |
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PVCCN_HB | Power from VCCN Supply, High Range (PXA250 applications | — | 115 mW | 250 mW | |
@2.5V | processor) | ||||
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PVCCN_HB | Power from VCCN Supply, High Range (PXA250 applications | — | 160 mW | 440 mW | |
@3.3V | processor) | ||||
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PT_IDLE_H | Total Power, IDLE Mode, High Range | — | 135mW | — | |
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Peak Voltage Range (PXA250 applications processor only) |
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PT_P | Total Power, Peak Range | — | 635 mW | 950 mW | |
PVCC_P | Power from VCC Supply, Peak Range | — | 470 mW | 360 mW | |
PVCCN_P | Power from VCCN Supply, Peak Range | — | 115 mW | 255 mW | |
@2.5V |
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PVCCN_P | Power from VCCN Supply, Peak Range | — | 160 mW | 440 mW | |
@3.3V |
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PT_IDLE_H | Total Power, IDLE Mode, High Range | — | 185mW | — | |
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NOTE: 1. These numbers are
8.4Oscillator Electrical Specifications
The applications processor contains two oscillators – 32.768 kHz and 3.6864 MHz; each chosen for a specific crystal. When choosing a crystal, match the crystal parameters as closely as possible.
8.4.132.768 kHz Oscillator Specifications
The 32.768 kHz Oscillator is connected between the TXTAL (amplifier input) and TEXTAL (amplified output). The 32.768 kHz specifications are shown in Table
Table 8-4. 32.768 kHz Oscillator Specifications (Sheet 1 of 2)
Symbol | Description | Min | Typical | Max |
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Crystal Specifications - Typical is FOX NC38 |
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FXT | Crystal Frequency, TXTAL/TEXTAL | — | 32.768 kHz | — |
LMT | Motional Inductance, TXTAL/TEXTAL | — | 6827.81 H | — |
CMT | Motional Capacitance, TXTAL/TEXTAL | — | 3.455 fF | — |
RMT | Motional Resistance, TXTAL/TEXTAL | 6 kΩ | 16 kΩ | 35 kΩ |
COT | Shunt Capacitance TXTAL to TEXTAL | — | 1.6 pF | — |
CLT | Load Capacitance TXTAL/TEXTAL | — | 12.5 pF | — |
Amplifier Specifications |
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VIH_X | Input High Voltage, TXTAL | 0.8 V*VCC | — | VCC |
VIL_X | Input Low Voltage, TXTAL | VSS | — | 0.2 V*VCC |
IIN_XT | Input Leakage, TXTAL | — | — | 1 ∝A |
CIN_XT | Input Capacitance, TXTAL/TEXTAL | — | 18 pF | 25 pF |
PXA250 and PXA210 Applications Processors Design Guide |