MC9S12Q FREESCALE [Freescale Semiconductor, Inc], MC9S12Q Datasheet - Page 62

• Manufacturer Part Number: MC9S12Q
• Description: Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Chapter 1 MC9S12Q Device Overview (MC9S12Q128-Family)
1.6.2
Resets are a subset of the interrupts featured in
system reset are summarized in
changed to known start-up states. Refer to the respective module Block User Guides for register reset
states.
1.6.2.1
1.6.2.2
When a reset occurs, MCU registers and control bits are changed to known start-up states. Refer to the
respective module Block User Guides for register reset states. Refer to the HCS12 Multiplexed External
Bus Interface (MEBI) Block Guide for mode dependent pin configuration of port A, B and E out of reset.
Refer to the PIM Block User Guide for reset configurations of all peripheral module ports.
Refer to Figure 1-2. to Figure 1-5. footnotes for locations of the memories depending on the operating
mode after reset.
The RAM array is not automatically initialized out of reset.
1.7
1.7.1
External paging is not supported on these devices. In order to access the 16K flash blocks in the address
range 0x8000–0xBFFF the PPAGE register must be loaded with the corresponding value for this range.
Refer to
For all devices Flash Page 3F is visible in the 0xC000–0xFFFF range if ROMON is set. For all devices
(except MC9S12GC16) Page 3E is also visible in the 0x4000–0x7FFF range if ROMHM is cleared and
ROMON is set. For all devices apart from MC9S12Q32 Flash Page 3D is visible in the 0x0000–0x3FFF
range if ROMON is set...
62
Table 1-11
Device Specific Information and Module Dependencies
Resets
PPAGE
COP Watchdog Reset
Reset Summary Table
Effects of Reset
Clock Monitor Reset
Low Voltage Reset
For devices assembled in 48-pin or 52-pin LQFP packages all non-bonded
out pins should be configured as outputs after reset in order to avoid current
drawn from floating inputs. Refer to
Power-on Reset
External Reset
Reset
for device specific page mapping.
Table
1-10. When a reset occurs, MCU registers and control bits are
Table 1-10. Reset Summary
Priority
1
1
1
2
3
MC9S12Q128
Table
Rev 1.09
NOTE
Table 1-5
1-9. The different sources capable of generating a
VREG module
CRG module
CRG module
CRG module
RESET pin
Source
for affected pins.
0xFFFC, 0xFFFD
0xFFFE, 0xFFFF
0xFFFE, 0xFFFF
0xFFFE, 0xFFFF
0xFFFA, 0xFFFB
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