参数资料
型号: EFM32TG230F32
厂商: Energy Micro
文件页数: 16/136页
文件大小: 0K
描述: MCU 32BIT 32KB FLASH 64-QFN
特色产品: EFM32 Tiny Gecko
标准包装: 1
系列: Tiny Gecko
核心处理器: ARM? Cortex?-M3
芯体尺寸: 32-位
速度: 32MHz
连通性: EBI/EMI,I²C,IrDA,智能卡,SPI,UART/USART
外围设备: 欠压检测/复位,DMA,POR,PWM,WDT
输入/输出数: 56
程序存储器容量: 32KB(32K x 8)
程序存储器类型: 闪存
RAM 容量: 4K x 8
电压 - 电源 (Vcc/Vdd): 1.8 V ~ 3.8 V
数据转换器: A/D 8x12b,D/A 2x12b
振荡器型: 外部
工作温度: -40°C ~ 85°C
封装/外壳: 64-VFQFN 裸露焊盘
包装: 标准包装
其它名称: 914-1035-6
...the world's most energy friendly microcontrollers
2011-02-04 - d0002_Rev1.00
112
www.energymicro.com
Bits
Name
Function
[0]
ENABLE
Enables the counter:
0 = counter disabled
1 = counter enabled.
When ENABLE is set to 1, the counter loads the RELOAD value from the LOAD register and then counts
down. On reaching 0, it sets the COUNTFLAG to 1 and optionally asserts the SysTick depending on the
value of TICKINT. It then loads the RELOAD value again, and begins counting.
4.4.2 SysTick Reload Value Register
The LOAD register specifies the start value to load into the VAL register. See the register summary in
Table 4.32 (p. 111) for its attributes. The bit assignments are:
31
0
RELOAD
Reserved
23
24
Table 4.34. LOAD register bit assignments
Bits
Name
Function
[31:24]
-
Reserved.
[23:0]
RELOAD
Value to load into the VAL register when the counter is enabled and when it reaches 0, see
4.4.2.1 Calculating the RELOAD value
The RELOAD value can be any value in the range 0x00000001-0x00FFFFFF. A start value of 0 is
possible, but has no effect because the SysTick exception request and COUNTFLAG are activated when
counting from 1 to 0.
The RELOAD value is calculated according to its use:
To generate a multi-shot timer with a period of N processor clock cycles, use a RELOAD value of N-1.
For example, if the SysTick interrupt is required every 100 clock pulses, set RELOAD to 99.
To deliver a single SysTick interrupt after a delay of N processor clock cycles, use a RELOAD of value
N. For example, if a SysTick interrupt is required after 400 clock pulses, set RELOAD to 400.
4.4.3 SysTick Current Value Register
The VAL register contains the current value of the SysTick counter. See the register summary in
Table 4.32 (p. 111) for its attributes. The bit assignments are:
31
0
CURRENT
Reserved
23
24
Table 4.35. VAL register bit assignments
Bits
Name
Function
[31:24]
-
Reserved.
[23:0]
CURRENT
Reads return the current value of the SysTick counter.
A write of any value clears the field to 0, and also clears the SysTick CTRL.COUNTFLAG bit to 0.
相关PDF资料
PDF描述
EFM32TG232F16 IC MCU 32BIT 16KB FLASH LQFP64
EFM32TG822F16 IC MCU 32BIT 16KB FLASH QFP48
EFM32TG840F16 MCU 32BIT 16KB FLASH 64-QFN
EFM32TG842F16 IC MCU 32BIT 16KB FLASH LQFP64
EL1503ACMZ-T13 IC INTERFACE ADSL/HDSL2 20-SOIC
相关代理商/技术参数
参数描述
EFM32TG230F32-QFN64 制造商:Energy Micro AS 功能描述:32 FLASH, USART + UART 2, QFN64 - Tape and Reel 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 32KB FLASH 64QFN
EFM32TG230F32-QFN64T 制造商:Energy Micro AS 功能描述:32 BIT ARM MPU, TINY GECKO - Trays
EFM32TG230F32-QFN64-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 32KB FLASH 64QFN
EFM32-TG230F32-SK 功能描述:IC MICRO KIT GECKO 64QFN RoHS:是 类别:套件 >> 半导体产品 - IC 元件分类 系列:Tiny Gecko 其它有关文件:NXPLOGIC2-KIT-ND Contents 标准包装:1 系列:74AUP 套件类型:逻辑 值:180 件 - 18 种值各 10 件 包装:- 安装类型:表面贴装 包括封装:6-XSON,8-XSON,8-XQFN 产品目录页面:2653 (CN2011-ZH PDF) 工具箱内容:(10) 568-4391-1-ND - IC GATE MULT-FUNC CONFIG 6-XSON(10) 568-4390-1-ND - IC CONFIG MULT-FUNC GATE 6-XSON(10) 568-4389-1-ND - IC GATE DUAL FUNCTION 8-XSON(10) 568-4388-1-ND - IC GATE DUAL FUNCTION 8-XQFN(10) 568-4387-1-ND - IC F-F D-TYPE POS EDGE 8-XSON(10) 568-4386-1-ND - IC F-F D-TYPE POS EDGE 8-XQFN(10) 568-4385-1-ND - IC CONFIG MULTI-FUNC GATE 6-XSON(10) 568-4384-1-ND - IC EX-OR GATE 3-IN 6-XSON(10) 568-4383-1-ND - IC F-F D-TYPE POS EDGE 6-XSON(10) 568-4382-1-ND - IC LATCH D-TYPE 6-XSON更多... 其它名称:NXPLOGIC2-KIT
EFM32TG230F32-T 制造商:Energy Micro AS 功能描述:IC MCU 32BIT 32KB FLASH 64QFN