参数资料
型号: MC68HC05G1B
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP56
封装: SDIP-56
文件页数: 86/124页
文件大小: 732K
代理商: MC68HC05G1B
MOTOROLA
7-10
MC68HC05G1
PROGRAMMABLE TIMER
7
Figure 7-4 Timer State Timing Diagram for Output Compare
INTERNAL
PROCESSOR
CLOCK
T00
T01
T10
T11
COUNTER
(16 BIT)
INTERNAL
TIMER
CLOCKS
$FFEB
$FFEC
$FFED
$FFEE
$FFEF
Note 1
Note 2
Note 3
$FFED
CPU writes $FFED
COMPARE
REGISTER
LATCH OF
COMPARE
REGISTER
OUTPUT COMPARE
Flag (OCF) and TCMP
Note:
1. The CPU write to the compare registers may take place at any time, but a compare only occurs at
the timer state T01. Thus, a 4-cycle difference may exist between the write to either on of the
compare registers and the actual compare.
2. Internal compare takes place during timer state T01.
3. OCF is set at timer state T11 which follows the comparison match ($FFED in this example).
TPG
60
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