Intel PXA250 and PXA210 manual Power and Clocking, Operating Conditions

Power and Clocking 8

8.1Operating Conditions

Table 8-1shows voltage, frequency, and temperature specifications for the applications processor for four different ranges. The temperature specification for each range is constant; the frequency range is operation voltage dependent. On a prototype design, the VCC/PLL_VCC regulator should have a range from 0.85 V to 1.65 V. PLL_VCC and VCC must be connected together on the board or driven by the same supply.

Table 8-1. Voltage, Temperature, and Frequency Electrical Specifications

Symbol	Description	Min	Typical	Max
tA	Ambient Temperature	-40°C	—	85° C
VVSS	VSS, VSSN, VSSQ Voltage	-0.3 V	0 V	0.3 V
VVCCQ	VCCQ	3.0 V	3.3 V	3.6 V
VVCCN_H	VCCN @ 3.3V	3.0 V	3.3 V	3.6 V
VVCCN_L	VCCN @ 2.5V	2.375 V	2.5 V	2.625 V
Low Voltage Range (PXA210 and PXA250)
VVCC_L	VCC, PLL_VCC Voltage, Low Range	0.8075 V	0.85 V	0.935 V
fTURBO_L	Turbo Mode Frequency, Low Range	99.5 MHz	—	132.7 MHz
fSDRAM_L	External Synchronous Memory Frequency, Low Range	—	—	66.4 MHz
Medium Voltage Range (PXA250 and PXA210)
VVCC_M	VCC, PLL_VCC Voltage, Mid Range	0.9 V	1.0 V	1.1 V
fTURBO_M	Turbo Mode Frequency, Mid Range	99.5 MHz	—	199.1 MHz
fSDRAM_M	External Synchronous Memory Frequency, Mid Range	—	—	99.5 MHz
High Voltage Range (PXA250 applications processor only)
VVCC_H	VCC, PLL_VCC Voltage, High Range	1.0 V	1.1 V	1.21 V
fTURBO_H	Turbo Mode Frequency, High Range	99.5 MHz	—	298.7 MHz
fSDRAM_H	External Synchronous Memory Frequency, High Range	—	—	99.5 MHz
Peak Voltage Range (PXA250 applications processor only)
VVCC_P	VCC, PLL_VCC Voltage, Peak Range	1.17 V	1.3 V	1.43 V
fTURBO_P	Turbo Mode Frequency, Peak Range	99.5 MHz	—	398.2 MHz
fSDRAM_P	External Synchronous Memory Frequency, Peak Range	—	—	99.5 MHz

NOTE: When VCCN=2.5 V, the I/O signals that are supplied by VCCN are 2.5 V tolerant only. Do not apply 3.3 V to any pin supplied by VCCN in this case.

PXA250 and PXA210 Applications Processors Design Guide 8-1