參數(shù)資料
型號(hào): MC68HC05PD6
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP80
封裝: PLASTIC, TQFP-80
文件頁數(shù): 161/165頁
文件大?。?/td> 841K
代理商: MC68HC05PD6
July 7, 1997
GENERAL RELEASE SPECIFICATION
MC68HC05PD6
TIMER SYSTEM
MOTOROLA
REV 1.1
9-23
Figure 9-13. EVO Timing Diagram
9.3
PRESCALER
The 8-bit prescaler in the timer system divides system clock (PH2) and provides
divided clock to each timer and Event input.
CLK1 for the Timer 1 is a xed frequency clock (PH2/4).
CLK2 for the Timer 2 is selected by T2R1 and T2R0 bits in the TBCR1, and this
clock is also used as the event input for the gate mode. The CLK2 transitions must
be synchronous to the falling edge of PH2.
PC5=0/EVO
OE2
CMP2/2
OL2 = 0
CMP2
EVO
PC5=1/EVO
OE2
CMP2/2
OL2 = 1
CMP2
EVO
CNTR2 WRITE
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