参数资料
型号: MC68HC05T7B
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: 11/109页
文件大小: 9008K
代理商: MC68HC05T7B
Technical Data
MC68HC705KJ1MC68HRC705KJ1MC68HLC705KJ1 — Rev. 3.0
110
Multifunction Timer Module
MOTOROLA
Multifunction Timer Module
10.5 Interrupts
The following timer sources can generate interrupts:
Timer overflow flag (TOF) — The TOF bit is set when the first eight
stages of the counter roll over from $FF to $00. The timer overflow
interrupt enable bit, TOIE, enables TOF interrupt requests.
Real-time interrupt flag (RTIF) — The RTIF bit is set when the
selected RTI output becomes active. The real-time interrupt
enable bit, RTIE, enables RTIF interrupt requests.
10.6 I/O Registers
The following registers control and monitor the timer operation:
Timer status and control register (TSCR)
Timer counter register (TCR)
10.6.1 Timer Status and Control Register
The read/write timer status and control register performs the following
functions:
Flags timer interrupts
Enables timer interrupts
Resets timer interrupt flags
Selects real-time interrupt rates
Address:
$0008
Bit 7
6
54321
Bit 0
Read:
TOF
RTIF
TOIE
RTIE
00
RT1
RT0
Write:
TOFR
RTIFR
Reset:
00
000011
= Unimplemented
Figure 10-3. Timer Status and Control Register (TSCR)
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