| поискавой системы для электроныых деталей |
|
ST10F269ZX датащи(PDF) 151 Page - STMicroelectronics |
|
|
|||||||||||||||||||||||||||||
ST10F269ZX датащи(HTML) 151 Page - STMicroelectronics |
|
151 / 184 page ![]() ST10F269 151/184 VDD = 5V ± 10%, VSS = 0V, TA = -40 to +125 °C (TQFP144 devices) 1. Theoretical minimum. The real minimum value depends on the duty cycle of the input clock signal. 32MHz is the maximum input frequency when using an external crystal oscillator. However, 32MHz can be applied with an external clock source. 2. The input clock signal must reach the defined levels VIL and VIH2. Figure 70 : External Clock Drive XTAL1 21.4.9 - Memory Cycle Variables The tables below use three variables which are derived from the BUSCONx registers and represent the special characteristics of the programmed memory cycle. The following table describes, how these variables are to be computed. Parameter Symbol fCPU = fXTAL fCPU = fXTAL / 2 fCPU = fXTAL x F F = 1.5/2,/2.5/3/4/5 Unit Minimum Maximum Minimum Maximum Minimum Maximum Oscillator period tOSC SR 31.251 – 15.625 – 31.25 x N – ns High time t1 SR 12.52 –6.252 – 12.52 – ns Low time t2 SR 12.52 –6.252 – 12.52 – ns Rise time t3 SR – 3.1252 –1.562 –3.1252 ns Fall time t4 SR – 3.1252 –1.562 –3.1252 ns Description Symbol Values ALE Extension tA TCL x [ALECTL] Memory Cycle Time wait states tC 2TCL x (15 - [MCTC]) Memory Tri-state Time tF 2TCL x (1 - [MTTC]) t1 t3 t4 VIL t2 tOSC VIH2 |
|
ссылки URL |
| Вашему бизинису помогли Аллдатащит? [ DONATE ] |
Что такое Аллдатащит | реклама | контакт | Конфиденциальность | Ссылка на техническое описание | обмен ссыками | поиск по производителю All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |