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参数资料
| 型号： | TMS320F241PGQ |
| 元件分类： | 数字信号处理 |
| 英文描述： | 16-Bit Digital Signal Processor |
| 中文描述： | 16位数字信号处理器 |
| 文件页数： | 50/116页 |
| 文件大小： | 1485K |
| 代理商： | TMS320F241PGQ |
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TMS320F243, TMS320F241
DSP CONTROLLERS
SPRS064B – DECEMBER 1997 – REVISED FEBRUARY 1999
50
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
analog-to-digital converter (ADC) module
A simplified functional block diagram of the ADC module is shown in Figure 11. The ADC module consists of
a 10-bit ADC with a built-in sample-and-hold (S/H) circuit. A total of 8 analog input channels is available on the
’F243/’F241. Eight analog inputs are provided by way of an 8-to-1 analog multiplexer. Maximum total conversion
time for each ADC unit is 1 s. Reference voltage for the ADC module is 0–5 V and is supplied externally.
Functions of the ADC module include:
The ADC unit can perform single or continuous S/H and conversion operations. When in continuous
conversion mode, the ADC generates two results every 1700 ns (with a 20-MHz clock and a prescale factor
of 1). These two results can be two separate analog inputs.
Two 2-level-deep FIFO result registers
Conversion can be started by software, an external signal transition on a device pin (ADCSOC), or by
certain event manager events.
The ADC control register is double-buffered (with a shadow register) and can be written to at any time. A
new conversion can start either immediately or when the previous conversion process is completed.
In single-conversion mode, at the end of each conversion, an interrupt flag is set and the peripheral interrupt
request (PIRQ) is generated if it is unmasked/enabled.
The result of previous conversions stored in data registers will be lost when a third result is stored in the
2-level-deep data FIFO.
A/D overview
The “pseudo” dual ADC is based around a 10-bit string/capacitor converter with the switched capacitor string
providing an inherent S/H function. (Note: There is only one converter with only one inherent S/H circuit.) This
peripheral behaves as though there are two analog converters, ADC #1 and ADC #2, but in fact, it uses only
one converter. This feature makes the A/D software compatible with the C240’s A/D and also allows two values
(e.g., voltage and current) to be converted almost simultaneoulsy with one conversion request. V
CCA
and V
SSA
pins must be connected to 5 V and analog ground, respectively. Standard isolation techniques must be used
while applying power to the ADC module.
The ADC module, shown in Figure 11, has the following features:
Up to 8 analog inputs, ADCIN00–ADCIN07. The results from converting the inputs ADCIN00–ADCIN07 are
placed in one of the ADCFIFO results registers (see Table 16). The digital value of the input analog voltage
is derived by:
Input Analog Voltage
Digital Value
1024
V
REFHI
V
REFLO
Almost simultaneous measurement of two analog inputs, 1700 ns apart
Single conversion and continuous conversion modes
Conversion can be started by software, an internal event, and/or an external event.
V
REFHI
and V
REFLO
(high- and low-voltage) reference inputs
Two-level-deep digital result registers that contain the digital vaules of completed conversions
Two programmable ADC module control registers (see Table 16)
Programmable clock prescaler
Interrupt or polled operation
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| TMS320F241PGS | 功能描述:数字信号处理器和控制器 - DSP, DSC 16B 5V fixed point DSP w/ Flash RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
| TMS320F243PGE | 功能描述:数字信号处理器和控制器 - DSP, DSC 16B 5V fixed point DSP w/ Flash RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
| TMS320F243PGEA | 功能描述:数字信号处理器和控制器 - DSP, DSC 16B 5V fixed point DSP w/ Flash RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
| TMS320F28015PZA | 功能描述:数字信号处理器和控制器 - DSP, DSC 32-Bit DSC w/ 32KB Flash RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
| TMS320F28015PZA | 制造商:Texas Instruments 功能描述:IC DSP 32-BIT CMOS QFP 100PIN PLAS |
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