MC68376BGMAB20 Freescale Semiconductor, MC68376BGMAB20 Datasheet - Page 80

• Manufacturer Part Number: MC68376BGMAB20
• Description: IC MCU 32BIT 8K ROM 160-QFP
• Manufacturer: Freescale Semiconductor
• Series: M683xxr

Specifications of MC68376BGMAB20

• Core Processor: CPU32
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: CAN, EBI/EMI, SCI, SPI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 18
• Program Memory Type: ROMless
• Ram Size: 7.5K x 8
• Voltage - Supply (vcc/vdd): 4.75 V ~ 5.25 V
• Data Converters: A/D 16x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 160-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

5.2 System Configuration
5.2.1 Module Mapping
5.2.2 Interrupt Arbitration
5-2
MOTOROLA
The SIM configuration register (SIMCR) governs several aspects of system operation.
The following paragraphs describe those configuration options controlled by SIMCR.
Control registers for all the modules in the microcontroller are mapped into a 4-Kbyte
block. The state of the module mapping bit (MM) in the SIM configuration register
(SIMCR) determines where the control register block is located in the system memory
map. When MM = 0, register addresses range from $7FF000 to $7FFFFF; when MM
= 1, register addresses range from $FFF000 to $FFFFFF.
Each module that can request interrupts has an interrupt arbitration (IARB) field. Arbi-
tration between interrupt requests of the same priority is performed by serial conten-
tion between IARB field bit values. Contention must take place whenever an interrupt
request is acknowledged, even when there is only a single request pending. For an
interrupt to be serviced, the appropriate IARB field must have a non-zero value. If an
interrupt request from a module with an IARB field value of %0000 is recognized, the
CPU32 processes a spurious interrupt exception.
Figure 5-1 System Integration Module Block Diagram
SYSTEM INTEGRATION MODULE
EXTERNAL BUS INTERFACE
SYSTEM CONFIGURATION
CLOCK SYNTHESIZER
SYSTEM PROTECTION
FACTORY TEST
CHIP-SELECTS
MODCLK
TSTME/TSC
XTAL
CLKOUT
EXTAL
CHIP-SELECTS
EXTERNAL BUS
FREEZE/QUOT
RESET
USER’S MANUAL
MC68336/376
300 S(C)IM BLOCK