参数资料
型号: XE8000EV104
厂商: Semtech
文件页数: 35/156页
文件大小: 0K
描述: EVAL BOARD FOR XE8805AMI028LF
标准包装: 1
类型: MCU
适用于相关产品: XE88LC05AMI028
所含物品: 完全组装的评估板
Semtech 2006
www.semtech.com
2-3
XE8805/05A
Table 2-4. Operating range of the Flash memory
Min.
Max.
Note
Retention time at 85°C
10
years
1
Retention time at 55°C
100
years
1
Number of programming cycles
10
2
1.
Valid only if programmed using a programming tool that is qualified
2.
Circuits can be programmed more than 10 times but after that, the retention time is no longer guaranteed.
All qualification tests have been done after 10 cycles.
2.3
Supply configurations
2.3.1
Flash circuit
The flash version of the circuit can be run from a supply between 2.4V and 5.5V (Figure 2-1). The capacitor on
VREG has to be connected at all times (value in Table 2-2) to guarantee proper operation of the device. The
capacitor on VMULT is only required if the circuit is to be operated below 3V.
VBAT
VREG
VMULT
VSS
2.4V – 5.5V
Cvreg
Cvmult
Figure 2-1. Supply configuration for the flash circuit.
2.3.2
ROM circuit
For the ROM version, two possible operating modes exist: with and without voltage regulator. Using the voltage
regulator, 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.
2.3.2.1
Low power operation
In this case, the internal voltage regulator is used in order to maintain low power consumption independent from
the supply voltage. The capacitor on VREG has to be connected at all times (value in Table 2-3) to guarantee
proper operation of the device. The capacitor on VMULT has to be connected only when VBAT<3V.
Not
Recommended
for
New
Designs
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