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SDA 6000
PRELIMINARY DATA SHEET
Version 2.1
System Control & Configuration
6 - 15
Micronas
Figure 6-2
Transitions between Idle Mode and Active Mode
Any interrupt request, whose individual Interrupt Enable flag was set before Idle mode
was entered, will terminate Idle mode regardless of the current CPU priority. The CPU
will
not
go back into Idle mode when a CPU interrupt request is detected, even when the
interrupt was not serviced because of a higher CPU priority or a globally disabled
interrupt system (IEN = ‘0’). The CPU will
only
go back into Idle mode when the interrupt
system is globally enabled (IEN = ‘1’)
and
a PEC service on a priority level higher than
the current CPU level is requested and executed.
Note: An interrupt request which is individually enabled and assigned to priority level 0
will terminate Idle mode. However, the associated interrupt vector will not be
accessed.
The watchdog timer may be used to monitor the Idle mode: an internal reset will be
generated if no interrupt request occurs before the watchdog timer overflows. To prevent
the watchdog timer from overflowing during Idle mode it must be programmed to a
reasonable time interval before Idle mode is entered.
Power Down Mode
Clocking of all internal blocks is stopped in Power Down Mode, the contents of the
internal RAMs, however, are preserved through the voltage supplied via the
V
DD
pins.
The watchdog timer is stopped in Power Down Mode. This mode can only be terminated
by an external hardware reset, e.g. by asserting a low level on the RSTIN pin. This reset
will initialize all SFRs and ports to their default state, but will not change the contents of
the internal RAMs.
SDRAM Refreshing
Before entering into one of the power save modes the external SDRAM must be put into
self-refresh-mode by use of register EBIDIR (see
Chapter 4.5
).
UED11132
Active
IDLE Instruction
Mode
Idle
Mode
Accepted
CPU Interrupt Request
Denied
Denied PEC Request
Executed
PEC Request
Содержание SDA 6000
Страница 3: ...Contents Overview...
Страница 21: ...Pin Description...
Страница 22: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Pin Descriptions 2 3 Micronas 2 Pin Descriptions...
Страница 29: ...Architectural Overview...
Страница 33: ...C16X Microcontroller...
Страница 34: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 C16X Microcontroller 4 3 Micronas 4 C16X Microcontroller...
Страница 88: ...Interrupt and Trap Function...
Страница 122: ...System Control Configuration...
Страница 159: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 System Control Configuration 6 40 Micronas...
Страница 160: ...Peripherals...
Страница 282: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Peripherals 7 124 Micronas...
Страница 283: ...Clock System...
Страница 284: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Clock System 8 3 Micronas 8 Clock System...
Страница 288: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Clock System 8 8 Micronas...
Страница 289: ...Sync System...
Страница 290: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Sync System 9 3 Micronas 9 Sync System...
Страница 301: ...Display Generator...
Страница 302: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Display Generator 10 3 Micronas 10 Display Generator...
Страница 348: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Display Generator 10 50 Micronas...
Страница 349: ...D A Converter...
Страница 352: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 D A Converter 11 6 Micronas...
Страница 353: ...Slicer and Acquisition...
Страница 354: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Slicer and Acquisition 12 3 Micronas 12 Slicer and Acquisition...
Страница 381: ...Register Overview...
Страница 398: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Register Overview 13 20 Micronas...
Страница 399: ...Elelctrical Characteristics...
Страница 400: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Electrical Characteristics 14 3 Micronas 14 Electrical Characteristics...
Страница 411: ...SDA 6000 PRELIMINARY DATA SHEET Version 2 1 Electrical Characteristics 14 14 Micronas...