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参数资料
型号： ST72F324K4
英文描述： 64Mb EDO/FPM - OBSOLETE
中文描述： 8位微控制器嵌套中断。闪光。 10位ADC。 4定时器。的SPI。 SCI接口
文件页数： 66/161页
文件大小： 2070K
代理商： ST72F324K4
ST72324
158/161
15.3 FLASH REV “X” and ALL ROM DEVICES
15.3.1 Read-out protection with LVD
The LVD is not supported if the read-out protection
is enabled.
15.3.2 External clock source with PLL
External clock source is not supported with the
PLL enabled.
15.3.3 I/O Port A and F Configuration
When using an external quartz crystal or ceramic
resonator, the fOSC2 clock may be disturbed be-
cause the device goes into reserved mode control-
led by Port A and F.
This happens with either one of the following con-
figurations:
PA3=0, PF4=1, PF1=0 while CSS and PLL op-
tions are both disabled and PF0 is toggling
PA3=0, PF4=1, PF1=0, PF0=1 while CSS or PLL
options are enabled
This is detailed in the following table:
As a consequence, for cycle-accurate operations,
these configurations are prohibited in either input
or output mode.
Workaround:
To avoid this occurring, it is recommended to con-
nect one of these pins to GND (PF4 or PF0) or
VDD (PA3 or PF1).
15.3.4 LVD Operation
Depending on the operating conditions, especially
the VDD ramp up speed and ambient temperature,
in some cases the LVD may not start. When this
occurs, the MCU may operate outside the guaran-
teed functional area (see datasheet Figure 76)
without being forced into reset state.
In this case, proper use of the watchdog may
make it possible to recover through a watchdog re-
set and allow normal operations to resume.
Consequently, the LVD function is not guaranteed
in the current silicon revision. For complete securi-
ty, an external reset circuit must be added.
15.4 ALL ROM DEVICES
15.4.1 AVD not supported
On some devices with a specific VDD ramp up
speed the AVD may not start. As a result it cannot
generate interrupts when VDD rises and falls.
15.4.2 Internal RC oscillator operation
Internal RC oscillator operation is not supported in
ROM devices.
CSS PLL PA3 PF4 PF1 PF0
Clock
Disturbance
OFF OFF
0
1
0
Tog
glin
g
Max. 2 clock
cycles lost at
each rising or
falling edge of
PF0
xON
01
Max. 1 clock
cycle lost out
of every 16
ON
x
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相关代理商/技术参数
参数描述
ST72F324K4B6 功能描述:8位微控制器 -MCU 5V RANGE 8B MCU RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72F324K4T6 功能描述:8位微控制器 -MCU Flash 16K SPI/SCI RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72F324K4T6TR 功能描述:8位微控制器 -MCU 5V RANGE 8B MCU RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72F324K4TA 功能描述:8位微控制器 -MCU Flask 16K SPI/SCI RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
ST72F324K4TA/TR 功能描述:8位微控制器 -MCU AUTO 8BIT MICRO RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT
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