参数资料
型号: ST10F269DIETR
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, UUC
封装: DIE
文件页数: 42/161页
文件大小: 1595K
代理商: ST10F269DIETR
ST10F269-T3
136/160
21.4 - AC characteristics
21.4.1 - Test Waveforms
21.4.2 - Definition of Internal Timing
The internal operation of the ST10F269-T3 is
controlled by the internal CPU clock fCPU. Both
edges of the CPU clock can trigger internal (for
example pipeline) or external (for example bus
cycles) operations.
The specification of the external timing (AC
Characteristics) therefore depends on the time
between two consecutive edges of the CPU clock,
called “TCL”.
The CPU clock signal can be generated by
different mechanisms. The duration of TCL and its
variation (and also the derived external timing)
depends on the mechanism used to generate
fCPU.
This influence must be regarded when calculating
the timings for the ST10F269-T3.
The example for PLL operation shown in Figure
67 refers to a PLL factor of 4.
Figure 65 : Input / Output Waveforms
Figure 66 : Float Waveforms
2.4V
0.45V
Test Points
0.2VDD+0.9
0.2VDD-0.1
AC inputs during testing are driven at 2.4V for a logic ‘1’ and 0.4V for a logic ‘0’.
Timing measurements are made at VIH min for a logic ‘1’ and VIL max for a logic ‘0’.
Timing
Reference
Points
VLoad +0.1V
VLoad -0.1V
VOH -0.1V
VOL +0.1V
VLoad
VOL
VOH
For timing purposes a port pin is no longer floating when VLOAD changes of ±100mV.
It begins to float when a 100mV change from the loaded VOH/VOL level occurs (IOH/IOL = 20mA).
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ST10F269-DPR 功能描述:16位微控制器 - MCU 16Bit MCU 256K BYTE FLASH,12K BYTE RAM RoHS:否 制造商:Texas Instruments 核心:RISC 处理器系列:MSP430FR572x 数据总线宽度:16 bit 最大时钟频率:24 MHz 程序存储器大小:8 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:2 V to 3.6 V 工作温度范围:- 40 C to + 85 C 封装 / 箱体:VQFN-40 安装风格:SMD/SMT
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