MC68340PV16VE Freescale Semiconductor, MC68340PV16VE Datasheet - Page 102

• Manufacturer Part Number: MC68340PV16VE
• Description: IC MCU 32BIT 16MHZ 144-LQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68340PV16VE

• Processor Type: M683xx 32-Bit
• Speed: 16MHz
• Voltage: 3.3V
• Mounting Type: Surface Mount
• Package / Case: 144-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

4.2.2.1 SYSTEM CONFIGURATION. Aspects of the system configuration are controlled
by the MCR and the autovector register (AVR).
The configuration of port B is controlled by the combination of the FIRQ bit in the MCR
and the port B pin assignment register (PPARB). Port B pins can function as dedicated I/O
lines, chip selects, interrupts, or autovector input.
For debug purposes, internal bus accesses can be shown on the external bus. This
function is called show cycles. The SHEN1, SHEN0 bits in the MCR control show cycles.
Bus arbitration can be either enabled or disabled during show cycles.
Arbitration for servicing interrupts is controlled by the value programmed into the interrupt
arbitration (IARB) field of the MCR. Each module that generates interrupts, including the
SIM40, has an IARB field. The value of the IARB field allows arbitration during an IACK
cycle among modules that simultaneously generate the same interrupt level. No two
modules should share the same IARB value. The IARB must contain a value other than $0
for all modules that can generate interrupts; interrupts with IARB = 0 are discarded as
extraneous. The SIM40 arbitrates for both its own interrupts and externally generated
interrupts.
MOTOROLA
Figure 4-2. System Configuration and Protection Function
CLOCK
Freescale Semiconductor, Inc.
For More Information On This Product,
PRESCALER
2
9
MC68340 USER’S MANUAL
Go to: www.freescale.com
INTERRUPT MONITOR
CONFIGURATION
FAULT MONITOR
DOUBLE BUS
SPURIOUS
MONITOR
MODULE
STATUS
RESET
BUS
INTERRUPT TIMER
WATCHDOG
SOFTWARE
PERIODIC
BERR
HALT
RESET
REQUEST
SOFTWARE
RESET
REQUEST or
IRQ7
IRQ7-IRQ1
4- 5