HCS12H FREESCALE [Freescale Semiconductor, Inc], HCS12H Datasheet - Page 14

• Manufacturer Part Number: HCS12H
• Description: 16-bit Microcontroller
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Pin Assignments
14
Note: Features shown in bold are not available in the 9S12H256 112 pin QFP package.
Note: Features shown in Italics are only available for the “Z” versions
Function 1
Pin Name
PH[7:0]
PJ[3:0]
PL[7:4]
PK[3:0]
PE6
PE5
PE4
PE3
PE2
PE1
PE0
PK7
Function 2
Pin Name
KWH[7:0]
FP[31:28]
KWJ[3:0]
BP[3:0]
IPIPE1
IPIPE0
ECLK
XIRQ
FP21
FP20
FP23
IRQ
XADDR[17:14]
Function 3
AN[15:12]
Pin Name
LSTRB
MODB
MODA
ECS
R/W





16-bit Microcontroller HCS12H Family, Rev. 11.1
Table 2 Pin Descriptions
Function 4
Pin Name
ROMCTL
TAGLO










PRELIMINARY
Function 1: Port E general purpose input or output pins.
Function 2: Instruction queue tracking signals.
Function 3: The state of the MODA and MODB pins during
reset determine the initial operating mode of the MCU
Function 1: Port E general purpose input or output pin.
Function 2: Internal bus clock output that can be used as a tim-
ing reference.
Function 1: Port E general purpose input or output pin.
Function 2: LCD frontplane segment driver output pin.
Function 3: In MCU expanded modes of operation, LSTRB is
used for the low-byte strobe function to indicate the type of
bus access.
Function 4: When instruction tagging is on, TAGLO is used to
tag the low half of the instruction word being read into the
instruction queue.
Function 1: Port E general purpose input or output pin.
Function 2: LCD frontplane segment driver output pin.
Function 3: In MCU expanded modes of operations, performs
the read/write output signal for the external bus. This pin
indicates direction of data on the external bus.
Function 1: Port E general purpose input pin.
Function 2: Maskable interrupt request input provides a
means of applying asynchronous interrupt requests. Will
wake up the MCU from STOP or WAIT mode
Function 1: Port E general purpose input pin.
Function 2: Nonmaskable interrupt request input provides a
means of applying asynchronous interrupt requests. Will
wake up the MCU from STOP or WAIT mode.
Function 1: Port H general purpose input or output pins.
Function 2: Key wake-up input pins that can generate an
interrupt causing the MCU to exit STOP or WAIT mode.
Function 1: Port J general purpose input or output pins.
Function 2: Key wake-up input pins that can generate an
interrupt causing the MCU to exit STOP or WAIT mode.
Function 1: Port K general purpose input or output pin.
Function 2: LCD frontplane segment driver output pin.
Function 3: During MCU expanded modes of operation, this
pin is used to enable the Flash EEPROM memory in the
memory map.
Function 4: During MCU expanded modes of operation, this
pin is used as the emulation chip select signal.
Function 1: Port K general purpose input or output pins.
Function 2: LCD backplane segment driver output pins.
Function 3: In MCU expanded modes of operation, expanded
address pins for the external bus.
Function 1: Port L general purpose input or output pins.
Function 2: LCD frontplane segment driver output pins.
Function 3: Analog inputs (ATD).
Description
Freescale Semiconductor