XE8000EV108 Semtech, XE8000EV108 Datasheet - Page 15

• Manufacturer Part Number: XE8000EV108
• Description: EVAL BOARD FOR XE8806/XE8807
• Manufacturer: Semtech
• Type: MCUr

Specifications of XE8000EV108

• Contents: Fully Assembled Evaluation Board
• For Use With/related Products: XE88LC06AMI026
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

2.4.2
The speed of the flash devices is not highly dependent upon the supply voltage. However, by limiting the
temperature range, the speed can be increased. The minimal guaranteed speed as a function of the supply voltage
and maximal temperature operating temperature is given in Figure 2-4.
2.4.3
For the ROM version, two possible operating modes exist: with and without voltage regulator. Using the voltage
regulator, a low power consumption will be obtained even with supply voltages above 2.4V. Without the voltage
regulator (i.e. VREG short-circuited to VBAT) , a higher speed can be obtained.
© Semtech 2006
Flash circuit version XE8807AM
ROM circuit version, regulator on
Figure 2-4. Guaranteed speed as a function of the supply voltage and maximal temperature.
Figure 2-5. Supply configuration for ROM circuit operation using the internal regulator.
7
6
5
4
3
2
1
0
Figure 2-3. Supply configuration for flash circuit operation.
2
2.5
VBAT
VBAT
VREG
VREG
VSS
VSS
3
supply voltage VBAT (V)
3.5
2-5
100nF
1uF
4
85°C
2.4 - 5.5 V
4.5
2.4 - 5.5 V
45°C
5
XE8806A/XE8807A
5.5
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