mc9s12e256 Freescale Semiconductor, Inc, mc9s12e256 Datasheet - Page 119

• Manufacturer Part Number: mc9s12e256
• Description: Hcs12 Microcontrollers 16-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Chapter 3
Port Integration Module (PIM9E256V1)
3.1
The port integration module establishes the interface between the peripheral modules and the I/O pins for
for ports AD, M, P, Q, S, T and U.
This section covers:
Each I/O pin can be configured by several registers: input/output selection, drive strength reduction, enable
and select of pull resistors, wired-OR mode selection, interrupt enable, and/or status flags.
3.1.1
A standard port has the following minimum features:
Optional features:
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Port A, B, E, and K and the BKGD pin
Port AD associated with ATD module (channels 15 through 0) and keyboard wake-up interrupts
Port M connected to 2 DAC, 1 IIC and 1 SCI (SCI2) modules
Port P and port Q connected to PMF module
Port S connected to 2 SCI (SCI0 and SCI1) and 1 SPI modules
Port T connected to 2 TIM (TIM0 and TIM1) modules
Port U connected to 1 TIM (TIM2) and 1 PWM modules
Input/output selection
5-V output drive with two selectable drive strength (or slew rates)
5-V digital and analog input
Input with selectable pull-up or pull-down device
Open drain for wired-OR connections
Interrupt input with glitch filtering
lntroduction
Features
Refer to
ports A, B, E and K, and the BKGD pin.
Chapter 3, “Port Integration Module (PIM9E256V1)”
MC9S12E256 Data Sheet, Rev. 1.08
NOTE
for details on
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