MC68CK331CAG16 Datasheet, PDF (8/84 Pages) Freescale Semiconductor, Inc – 32-Bit Modular Microcontroller

Freescale Semiconductor, Inc.
1.4 Address Map
The following figure is a map of the MCU internal addresses. Unimplemented blocks are mapped ex-
ternally.
$YFF000
$YFF900
GPT
$YFF93F
$YFFA00
$YFFA7F
$YFFA80
$YFFAFF
SIM
RESERVED
$YFFC00
QSM
$YFFDFF
$YFFFFF
331 ADDRESS MAP
Figure 4 MCU Address Map
1.5 Intermodule Bus
The intermodule bus (IMB) is a standardized bus developed to facilitate both design and operation of
modular microcontrollers. It contains circuitry to support exception processing, address space partition-
ing, multiple interrupt levels, and vectored interrupts. The standardized modules in the MCU communi-
cate with one another and with external components through the IMB. The IMB in the MCU uses 24
address and 16 data lines.
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