參數資料
型號: 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: 160/165頁
文件大?。?/td> 841K
代理商: MC68HC05PD6
GENERAL RELEASE SPECIFICATION
July 7, 1997
MOTOROLA
TIMER SYSTEM
MC68HC05PD6
9-22
REV 1.1
Figure 9-12. EVO Block Diagram
When the OE2 bit in the Timer Control Register 2 (TCR2) is set, the EVO output is
activated and when OE2 is cleared EVO is deactivated. These controls must be
done synchronously to the EVO output signal to avoid an incomplete pulse on the
pin. The OL2 bit in the TCR2 decides which edge of EVO should be synchronized.
When DDRC5 bit is set or the synchronized output enable is high (clock on), the
output buffer at the EVO/PC5 pin is enabled. If DDRC5 bit is set to one, the pin
state during the idling condition (clock off) depends on the PC5 output data latch.
If DDRC5 is cleared, the pin becomes high impedance during clock off.
1/2
D
C
Q
SEL
PC5
EVO
OE2
OL2
CMP2
CNTR2
WRITE
PC5 (Out)
PC5 (In)
DDRC5
1
0
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