参数资料
型号: MC56F8355MFG60
厂商: MOTOROLA INC
元件分类: 数字信号处理
英文描述: 4-BIT, 120 MHz, OTHER DSP, PQFP128
封装: LQFP-128
文件页数: 14/152页
文件大小: 2224K
代理商: MC56F8355MFG60
110
56F8355 Technical Data
Preliminary
6.7 Power Down Modes Overview
The 56F8355 operates in one of three power-down modes, as shown in Table 6-3
.
All peripherals, except the COP/watchdog timer, run off the IPBus clock frequency, which is the
same as the main processor frequency in this architecture. The maximum frequency of operation
is SYS_CLK = 60MHz.
6.8 Stop and Wait Mode Disable Function
Figure 6-16 Stop Disable Circuit
Table 6-3 Clock Operation in Power-Down Modes
Mode
Core Clocks
Peripheral Clocks
Description
Run
Active
Device is fully functional
Wait
Core and memory
clocks disabled
Active
Peripherals are active and can produce interrupts if
they have not been masked off.
Interrupts will cause the core to come out of its
suspended state and resume normal operation.
Typically used for power-conscious applications.
Stop
System clocks continue to be generated in
the SIM, but most are gated prior to
reaching memory, core and peripherals.
The only possible recoveries from Stop mode are:
1. CAN traffic (1st message will be lost)
2. Non-clocked interrupts
3. COP reset
4. External reset
5. Power-on reset
D-FLOP
DQ
C
D-FLOP
D
Q
C
R
56800E
STOP_DIS
Permanent
Disable
Reprogrammable Disable
Clock
Select
RESET
Note: Wait disable circuit is similar
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