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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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HT9480 датащи(PDF) 19 Page - Holtek Semiconductor Inc |
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HT9480 датащи(HTML) 19 Page - Holtek Semiconductor Inc |
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19 / 57 page  The states of the registers are summarized below. Register Power-on reset (POR) WDT time-out (normal operation) RES reset (normal operation) RES reset (HALT) WDT time- out (HALT)* TMR0 xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu TMRC0 00-0 1--- 00-0 1--- 00-0 1--- 00-0 1--- uu-u u-- TMR1 xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu TMRC1 00-0 1--- 00-0 1--- 00-0 1--- 00-0 1--- uu-u u-- PC 0000H 0000H 0000H 0000H 0000H MP0 xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu MP1 xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu ACC xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu TBLP xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu TBLH xxxx xxxx uuuu uuuu uuuu uuuu uuuu uuuu uuuu uuuu STATUS --00 xxxx --1u uuuu --uu uuuu --01 uuuu --11 uuuu INTC -000 0000 -000 0000 -000 0000 -000 0000 -uuu uuuu WDTS 0000 0111 0000 0111 0000 0111 0000 0111 uuuu uuuu PA 1111 1111 1111 1111 1111 1111 1111 1111 uuuu uuuu PAC 1111 1111 1111 1111 1111 1111 1111 1111 uuuu uuuu PB 1111 1111 1111 1111 1111 1111 1111 1111 uuuu uuuu PBC 1111 1111 1111 1111 1111 1111 1111 1111 uuuu uuuu PC ---- 1111 ---- 1111 ---- 1111 ---- 1111 ---- uuuu PCC ---- 1111 ---- 1111 ---- 1111 ---- 1111 ---- uuuu Note: “*” means “warm reset” “u” means “unchanged” “x” means “unknown” The measured result will remain in the timer/event counter even when the activated transient occurs again. In other words, only one cycle measurement can be made until the TON is set. The cycle measurement will re-function as long as further transient pulses are received. No te that, in this ope ration mode, the timer/event counter starts counting not accord- ing to the logic level but to the transient edges. In the case of counting overflows, the counter is re-loaded from its counter preload register and issues an interrupt request, similar to the other two modes. To enable the counting operation, the value of the timer on bit (TON; bit 4 of TMRC0 and TMRC1) is “1”. In the pulse width measurement mode, the TON is automatically cleared after the measurement cycle is completed. In the other two modes, namely the event count or timer mode, the TON can be reset only by in- structions. The overflow of the programmable timer counter and of the timer/event counter can be configured as one of the wake-up sources. No matter what type of operation mode is chosen, writing a 0 to ET0I and ET1I disables the interrupt service of the programmable timer counter and the timer/event counter, re- spectively. HT9480 19 23th Feb ’98 |
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