mcf5282 Freescale Semiconductor, Inc, mcf5282 Datasheet - Page 371

• Manufacturer Part Number: mcf5282
• Manufacturer: Freescale Semiconductor, Inc

20.3
This subsection describes the operation of the general purpose time module in low-power modes and
halted mode of operation. Low-power modes are described in the Power Management Module. Table 3-1
shows the general purpose timer module operation in the low-power modes, and shows how this module
may facilitate exit from each mode.
General purpose timer operation stops in stop mode. When stop mode is exited, the general purpose timer
continues to operate in its pre-stop mode state.
20.4
Table 20-2
20.4.1
The GPTn[2:0] pins are for channel 2–0 input capture and output compare functions. These pins are
available for general-purpose input/output (I/O) when not configured for timer functions.
20.4.2
The GPTn3 pin is for channel 3 input capture and output compare functions or for the pulse accumulator
input. This pin is available for general-purpose I/O when not configured for timer functions.
Freescale Semiconductor
Low-Power Mode Operation
Signal Description
provides an overview of the signal properties.
GPTn[2:0]
GPTn3
1
SYNCn
GPTn0
GPTn1
GPTn2
GPTn3
Throughout this section, an “n” in the pin name, as in “GPTn0,” designates
GPTA or GPTB.
Name
SYNCA is available on either PORTE3 or PORTE1; SYNCB is available on either PORTE2 or
PORTE0.
Pin
Low-power Mode
Halted
Doze
Stop
Wait
Table 20-1. Watchdog Module Operation in Low-power Modes
PORTE[3:0]
Register Bit
GPTPORT
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3
PORTTn0
PORTTn1
PORTTn2
PORTTn3
1
GPTn channel 0 IC/OC pin
GPTn channel 1 IC/OC pin
GPTn channel 2 IC/OC pin
GPTn channel 3 IC/OC or PA pin
GPTn counter synchronization
Table 20-2. Signal Properties
Watchdog Operation
Stopped
Normal
Normal
Normal
Function
NOTE
General Purpose Timer Modules (GPTA and GPTB)
Reset State
Input
Input
Input
Input
Input
Mode Exit
No
No
No
No
Pull-up
Active
Active
Active
Active
Active
20-3