MC68HC12 MOTOROLA [Motorola, Inc], MC68HC12 Datasheet - Page 64

• Manufacturer Part Number: MC68HC12
• Description: The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit
• Manufacturer: MOTOROLA [Motorola, Inc]

Pinout and Signal Descriptions
Technical Data
64
PCAN2[1:0]
PCAN1[1:0]
PCAN0[1:0]
Port Name
Port CAN2
Port CAN1
Port CAN0
PIB[5:4]
PAD1[7:0]
PAD0[7:0]
PK[7,3:0]
Port AD1
Port AD0
PIB[7:6]
PB[7:0]
PE[7:0]
PP[3:0]
PA[7:0]
Port IB
Port IB
Port A
Port B
Port E
Port K
Port P
(1)
(2)
84/82/80/7
8/76/74/72
83/81/79/7
7/75/73/71
Numbers
100–101
102–103
104–105
100–101
108-111
112-pin
36–39,
31–24
98–99
53–56
64-57
112,
1–3
Pin
/70
/69
13,
Table 3-3. MC68HC912DT128A Port Description Summary
Register (Address)
When the PUPT bit in the TMSK2 register is set, all input pins are pulled
up internally by an active pull-up device. Pullups are disabled after reset.
Setting the RDPT bit in the TMSK2 register configures all port T outputs
to have reduced drive levels. Levels are at normal drive capability after
reset. The TMSK2 register can be read or written anytime after reset.
Refer to
DDRIB ($00E7)
DDRIB ($00E7)
Data Direction
DDRK ($00FD)
DDRA ($0002)
DDRB ($0003)
DDRE ($0009)
DDRP ($0057)
PCAN2[1] Out
PCAN1[1] Out
PCAN0[1] Out
PE[7:2] In/Out
PCAN2[0] In
PCAN1[0] In
PCAN0[0] In
PE[1:0] In
In/Out
In/Out
In/Out
In/Out
In/Out
In/Out
In
In
Enhanced Capture
Pinout and Signal Descriptions
Port A and port B pins are used for address and data in
DDRA and DDRB are not in the address map in expanded or
Analog-to-digital converter 1 and general-purpose I/O.
Analog-to-digital converter 0 and general-purpose I/O.
PCAN2[1:0] are used with the MSCAN2 module and cannot be
PCAN1[1:0] are used with the MSCAN1 module and cannot be
PCAN0[1:0] are used with the MSCAN0 module and cannot be
General purpose I/O. PIB[7:6] are used with the I-Bus module
General purpose I/O (MC68HC912DG128A only).
Mode selection, bus control signals and interrupt service
Page index emulation signals in expanded or peripheral mode
General-purpose I/O. PP[3:0] are used with the pulse-width
expanded modes. The port data registers are not in the
address map during expanded and peripheral mode
operation. When in the map, port A and port B can be read or
written any time.
peripheral modes.
used as general purpose I/O (MC68HC912DT128A only).
used as general purpose I/O.
used as general purpose I/O.
when enabled.
request signals; or general-purpose I/O.
or general-purpose I/O.
modulator when enabled.
Timer.
Description
MC68HC912DT128A — Rev 4.0
MOTOROLA