Freescale Semiconductor MPC5553

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MPC5553/MPC5554 Microcontroller Reference Manual, Rev. 5

17-4 Freescale Semiconductor

• Freeze mode

Freeze mode enables the eMIOS to freeze the registers of the unified channels when debug mode

is requested at the MCU level. While in freeze mode, the eMIOS continues to operate to allow the

MCU access to the unified channels’ registers. The unified channel will remain frozen until the

EMIOS_MCR[FRZ] bit is written to zero, the MCU exits debug mode, or a unified channel’s

EMIOS_CCR[FREN] bit is cleared.

17.1.4.2 Unified Channel Modes

The unified channels can be configured to operate in the following modes:

These modes are described in Section 17.4, “Functional Description.”

Table 17-1. Unified Channel Modes

Mode MPC5554 MPC5553

General purpose input/output Yes Yes

Single action input capture Yes Yes

Single action output compare Yes Yes

Input pulse width measurement Yes Yes

Input period measurement Yes Yes

Double action output compare Yes Yes

Pulse/edge accumulation Yes Yes

Pulse/edge counting Yes Yes

Quadrature decode Yes Yes

Windowed programmable time accumulation Yes Yes

Modulus counter, normal Yes Yes

Modulus counter, buffered No Yes

Output pulse width and frequency modulation, normal Yes Yes

Output pulse width and frequency modulation, buffered No Yes

Center aligned output pulse width modulation with dead time

insertion, normal

Ye s Ye s

Center aligned output pulse width modulation with dead time

insertion, buffered

No Yes

Output pulse width modulation, normal Yes Yes

Output pulse width modulation, buffered No Yes

Freescale Semiconductor MPC5553 - Page 643