参数资料
型号: XE8805AMI028LF
厂商: Semtech
文件页数: 98/156页
文件大小: 0K
描述: IC DAS 16BIT FLASH 8K MTP 64LQFP
标准包装: 160
系列: XE880x
应用: 感测机
核心处理器: Coolrisc816?
程序存储器类型: 闪存(22 kB)
控制器系列: XE8000
RAM 容量: 512 x 8
接口: UART,USRT
输入/输出数: 24
电源电压: 2.4 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 64-LQFP
包装: 托盘
供应商设备封装: 64-LQFP(10x10)
产品目录页面: 585 (CN2011-ZH PDF)
配用: XE8000MP-ND - PROG BOARD AND PROSTART2 CARD
Semtech 2006
www.semtech.com
7-5
XE8805/05A
00000
0
010
000
10000
0
1100
00
111
01000
0
10000
0
110
00
0
111
11
1
0100
00
10000
0
1100
00
11111
1
0100
00
100
000
110
00
0
111
010
000
10
0000
11
00
111
00
0000
010
000
10000
0
1100
00
111111 01000
0
100000
110
000
11111
1
0100
00
10000
0
11000
0
11111
1
0100
00
100
000
1100
00
1111
11
0100
00
10
0000
1100
00
111
0000
0001
0011
0111
1111
1E+04
1E+05
1E+06
1E+07
1E+08
RcFreqCoarse(3:0)
Nomina
lRC
os
c
illa
to
rf
re
q
ue
nc
y
[
H
z]
RcFreqRange='1'
RcFreqRange='0'
RcFreqFine(5:0)
Figure 7-2. RC oscillator nominal frequency tuning.
7.5.1.3
RC oscillator specifications
symbol
description
min
typ
max
unit
Comments
fRCmin
Lowest RC frequency
40
80
120
kHz
Note 1
RcFreqFine
fine tuning step
1.4
2.0
%
RC_su
startup time
30
50
us
BiasRc=0
3
5
us
BiasRc=1
PSRR @ DC
Supply voltage
TBD
%/V
Note 2
dependence
TBD
%/V
Note 3
f/T
Temperature
dependence
0.1
%/
°C
Table 7-7. RC oscillator specifications
Note 1: this is the frequency tolerance when all trimming codes are 0.
Note 2: frequency shift as a function of VBAT with normal regulator function.
Note 3: frequency shift as a function of VBAT while the regulator is short-circuited to VBAT.
The tolerances on the minimal frequency and the drift with supply or temperature can be cancelled using the
software DFLL (digital frequency locked loop) which uses the crystal oscillator as a reference frequency.
Not
Recommended
for
New
Designs
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