参数资料
型号: MC68HC05SR3FB
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQFP44
封装: QFP-44
文件页数: 43/96页
文件大小: 3143K
代理商: MC68HC05SR3FB
Freescale
6-2
MC68HC05SR3
TIMER
6
Figure 6-1 Timer Block Diagram
Clock Source
Logic
Interrupt Circuit
Timer Data Register ($08)
TIF
TIM TCEX TINE PRER PR2
PR1
PR0
Timer Control Register ($09)
Overflow
Detect
Circuit
TIMER
Internal Processor Clock
8-bit count-down timer counter
7-bit prescaler counter
Prescaler
Select
Logic
(8 to 1 MUX)
Internal
Bu
s
8
RST
TCEX
TINE
Clock Source
0
Internal clock to timer
0
1
“AND” of internal clock and TIMER pin to timer
1
0
Input clock to timer disabled
1
TIMER pin to timer
TPG
46
05SR3.Book Page 2 Thursday, August 4, 2005 1:08 PM
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