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| 型號： | SHEET |
| 英文描述： | ST10F280 - ERRATA SHEET REVISION AB - FEB 2002 |
| 中文描述： | ST10F280 -勘誤表修訂本抗體- 2002年2月 |
| 文件頁數(shù)： | 3/4頁 |
| 文件大?。?/td> | 31K |
| 代理商： | SHEET |
ST10F280-AB
3/4
2.4 - ST_XTIMER.01 - XADCINJ Signal Output Too Short for ADC Channel Injection
The duration of the XADCINJ output lasts two cycles (50ns at 40MHz) but to ensure that a signal
transition is properly recognized, an external capture input signal should be held for at least 8 CPU clock
cycles before it changes its level so the duration of the XADCINJ signal is too short.
Workaround:
The falling edge of the XADCINJ signal must be delayed up to 8 CPU clock cycles.
History of Fixed Functional Problems of the ST10F280
Summary of Remaining Functional Problems Known on the ST10F280-AB
Figure 1 : XADCINJ Timing
Figure 2 : External Connection for ADC Channel Injection
Name
Short Description
Fixed in Step
ST_XADCMUX.01
Erroneous Conversion Result in Overload Condition
AB
Name
Short Description
PWRDN.1
Execution of PWRDN Instruction
MAC.9
CoCMP Instruction Inverted Operands
MAC.10
E Flag Evaluation for CoSHR and CoASHR Instructions when Saturation Mode is Enabled
ST_XTIMER.01
XADCINJ Signal Output Too Short for ADC Channel Injection
XCLK
XADCINJ
4 TCL = 50ns
Input
Latch
XTIMER
Clock
P7.7/CC31
XADCINJ
CAPCOM2 UNIT
C
R
Output trigger for ADC
channel injection
Typical value:
R = 10K
C = 47pF at 40MHz
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