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参数资料
型号： XE8806AMI026TLF
厂商： Semtech
文件页数： 33/143页
文件大小： 0K
描述： IC MCU LOW PWR MTP FLASH 32-TQFP
标准包装： 1
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： 32-TQFP
包装： 剪切带 (CT)
供应商设备封装： 32-TQFP（7x7）
配用： XE8000MP-ND - PROG BOARD AND PROSTART2 CARD
其它名称： XE8806AMI026CT
Semtech 2006
www.semtech.com
17-7
XE8806A/XE8807A
CascadeCD
CountPWM1
Counter C
mode
Counter D
mode
IrqC
source
IrqD
source
PB(1)
function
0
Counter 8b
Downup: C
Counter 8b
Downup: D
Counter
C
Counter
D
PB(1)
1
0
Counter 16b CD
Downup: C
Counter
CD
-
PB(1)
0
1
PWM 8b
Downup: C
Counter 8b
Downup: D
-
Counter
D
PWM C
1
PWM 10 – 16b CD
Downup: C
-
PWM CD
Table 17-13: Operating modes of the counters C and D
17.9
Counter / Timer mode
The counters in counter / timer mode are generally used to generate interrupts after a predefined number of clock
periods applied on the counter clock input.
Each counter can be set individually either in upcount mode by setting CntXDownUp in the register
RegCntConfig1 or in downcount mode by resetting this bit. Counters A and B can be cascaded to behave as a 16
bit counter by setting CascadeAB in the RegCntConfig1 register. Counters C and D can be cascaded by setting
CascadeCD. When cascaded, the up/down count modes of the counters B and D are defined respectively by the
up/down count modes set for the counters A and C.
When in upcount mode, the counter will start incrementing from zero up to the target value which has been written
in the corresponding RegCntX register(s). When the counter content is equal to the target value, an interrupt is
generated at the next counter clock pulse and the counter is loaded again with the zero value (Figure 17-2).
When in downcount mode, the counter will start decrementing from the initial load value which has been written in
the corresponding RegCntX register(s) down to the zero value. Once the counter content is equal to zero, an
interrupt is generated at the next counter clock pulse and the counter is loaded again with the load value (Figure
17-2).
Be careful to select the counter mode (no capture, not PWM, specify cascaded or not and up or down counting
mode) before writing any target or load value to the RegCntX register(s). This ensures that the counter will start
from the correct initial value. When counters are cascaded, both counter registers must be written to ensure that
both cascaded counters will start from the correct initial values.
The stopping and consecutive starting of a counter in counter mode without a target or load value write operation in
between can generate an interrupt if this counter has been stopped at the zero value (downcount) or at it’s target
value (upcount). This interrupt is additional to the interrupt which has already been generated when the counter
reached the zero or the target value.
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相关代理商/技术参数
参数描述
XE8806ARI000 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Ultra Low-Power Low-Voltage
XE8806ARI026LF 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Ultra Low-Power Low-Voltage
XE8807AMI000 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Ultra Low-Power Low-Voltage
XE8807AMI026LF 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Ultra Low-Power Low-Voltage
XE8807AMI026TLF 功能描述:IC MCU LOW PWR MTP FLASH 32-TQFP RoHS:是 类别:集成电路 (IC) >> 嵌入式 - 微控制器 - 特定应用 系列:XE880x 产品变化通告:Product Discontinuation 26/Aug/2009 标准包装:250 系列:- 应用:网络处理器 核心处理器:4Kc 程序存储器类型:- 控制器系列:- RAM 容量:16K x 8 接口:以太网，UART，USB 输入/输出数:- 电源电压:1.8V, 3.3V 工作温度:- 安装类型:表面贴装 封装/外壳:208-LQFP 包装:带卷 (TR) 供应商设备封装:PG-LQFP-208 其它名称:SP000314382
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