參數(shù)資料
型號: XE8805AMI028LF
廠商: Semtech
文件頁數(shù): 118/156頁
文件大?。?/td> 0K
描述: IC DAS 16BIT FLASH 8K MTP 64LQFP
標(biāo)準(zhǔn)包裝: 160
系列: XE880x
應(yīng)用: 感測機(jī)
核心處理器: Coolrisc816?
程序存儲器類型: 閃存(22 kB)
控制器系列: XE8000
RAM 容量: 512 x 8
接口: UART,USRT
輸入/輸出數(shù): 24
電源電壓: 2.4 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 64-LQFP
包裝: 托盤
供應(yīng)商設(shè)備封裝: 64-LQFP(10x10)
產(chǎn)品目錄頁面: 585 (CN2011-ZH PDF)
配用: XE8000MP-ND - PROG BOARD AND PROSTART2 CARD
Semtech 2006
www.semtech.com
11-5
XE8805/05A
PARes1[x]
PARes0[x]
PAReset[x]
0
1
PA[x]
1
0
not(PA[x])
1
Table 11-8: Selection bits for reset signal
A reset from Port A can be inhibited by placing a 0 on both PARes1[x] and PARes0[x] for at least 1 pin. Setting
both PARes1[x] and PARes0[x] to 1, makes the reset independent of the value on the corresponding pin. Setting
both registers to hFF, will reset the circuit independent from the Port A input value. This makes it possible to do a
software reset.
Note: depending of the value of PA[0] to PA[7], the change of RegPARes0 and RegPARes1 can cause a reset.
Therefore it is safe to have always one (RegPARes0[x], RegPARes1[x]) equal to ‘00’ during the setting operations.
Port A as a RC enable:
PA[0] can be used to enable the RC oscillator. When RCOnPA0 bit in RegSysMisc is set to 1 and the value of
PA[0] (debounced or not) is equal to 1, the EnRc bit in RegSysClock is automatically set to 1.
11.6 Port A electrical specification
Sym
description
min
typ
max
unit
Comments
VINH
Input high voltage
0.7*VBAT
VBAT
V
VBAT
≥2.4V
VINL
Input low voltage
VSS
0.2*VBAT
V
VBAT
≥2.4V
RPU
Pull-up resistance
20
50
80
k
Cin
Input capacitance
3.5
pF
Note 1
Note 1: this value is indicative only since it depends on the package.
Table 11-9. Port A electrical specification.
Not
Recommended
for
New
Designs
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