参数资料
型号: MC68HC11D0CFBE3
厂商: Freescale Semiconductor
文件页数: 82/124页
文件大小: 0K
描述: IC MCU 8BIT 3MHZ 44-QFP
标准包装: 480
系列: HC11
核心处理器: HC11
芯体尺寸: 8-位
速度: 3MHz
连通性: SCI,SPI
外围设备: POR,WDT
输入/输出数: 26
程序存储器类型: ROMless
RAM 容量: 192 x 8
电压 - 电源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 44-QFP
包装: 托盘
RESETS AND INTERRUPTS
5-16
TECHNICAL DATA
Figure 5-3 Interrupt Source Resolution within SCI
5.5 Low-Power Operation
Both STOP and WAIT suspend CPU operation until a reset or interrupt occurs. The
WAIT condition suspends processing and reduces power consumption to an interme-
diate level. The STOP condition turns off all on-chip clocks and reduces power con-
sumption to an absolute minimum while retaining the contents of all 192 bytes of RAM.
5.5.1 WAIT
The WAI opcode places the MCU in the WAIT condition, during which the CPU regis-
ters are stacked and CPU processing is suspended until a qualified interrupt is detect-
ed. The interrupt can be an external IRQ, an XIRQ, or any of the internally generated
interrupts, such as the timer or serial interrupts. The on-chip crystal oscillator remains
active throughout the WAIT standby period.
The reduction of power in the WAIT condition depends on how many internal clock sig-
FLAG
Y
N
OR = 1?
Y
N
Y
N
TDRE = 1?
TC = 1?
Y
N
IDLE = 1?
Y
N
Y
N
Y
N
Y
N
ILIE = 1?
RIE = 1?
TIE = 1?
BEGIN
RE = 1?
Y
N
Y
N
TE = 1?
TCIE = 1?
Y
N
RE = 1?
Y
N
RDRF = 1?
VALID SCI REQUEST
NO
VALID SCI REQUEST
INT SOURCE RES
F
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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