MPC555CME Freescale Semiconductor, MPC555CME Datasheet - Page 579

• Manufacturer Part Number: MPC555CME
• Description: KIT EVALUATION FOR MPC555
• Manufacturer: Freescale Semiconductor
• Type: Microcontrollerr

Specifications of MPC555CME

• Contents: Module Board, Installation Guide, Power Supply, Cable, Software and more
• Processor To Be Evaluated: MPC555
• Data Bus Width: 32 bit
• Interface Type: RS-232
• For Use With/related Products: MPC555
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

15.15.5 MIOS1 Input Pulse Accumulation
15.16 MIOS1 Configuration
MPC555
USER’S MANUAL
Prescaler
MIOS Modulus Counter Submodule
Modulus
Select
Control
Clock
Counting the number of pulses on an input signal is another capability of the MIOS1.
Pulse accumulation uses an MMCSM. Since the counters in the counter submodules
are software accessible, pulse accumulation does not require the use of an action sub-
module. The pulse accumulation can operate continuously, interrupting only on binary
overflow of the 16-bit counter. When an MMCSM is used, an interrupt can instead be
created when the pulse accumulation reaches a preprogrammed value. To do that, the
two’s complement of the value is put in the modulus register and the interrupt occurs
when the counter overflows.
The complete MIOS1 submodule and pin configuration is shown in
or Pin
From
/
MPC556
Modulus Register
Figure 15-12 MIOS1 Example: Pulse Width Modulation Output
Load
16-bit Up-Counter
MODULAR INPUT/OUTPUT SUBSYSTEM (MIOS1)
Submodule Bus
Rev. 15 October 2000
Counter
Buses
16-bit
Two
Select
in OCAB mode (MOD3 – MOD0 = 0b0101)
Bus
16-bit Register A
16-bit Register B2
16-bit Register B1
16-bit Compare A
16-bit Compare B
MIOS Double Action Submodule
Table
Compare
Interrupt
Leading
Flip-Flop
Output
Output
Edge
15-36.
MOTOROLA
on
Output
Pin
15-43